GE MDS DS-EL805 MDS TransNet 900 User Manual Book1
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![ii MDS TransNET I&O Guide MDS 05-2708A01, Rev. D 5.2 Performance Optimization .............................................. 20Antenna Aiming............................................................... 20Antenna SWR Check ...................................................... 20Data Buffer Setting—Modbus Protocol ........................... 21Hoptime Setting............................................................... 21TotalFlow™ Protocol at 9600 with Sleep Mode............... 21Operation at 115200 bps................................................. 21Baud Rate Setting........................................................... 21Radio Interference Checks.............................................. 22 6.0 RADIO PROGRAMMING ...................................................... 226.1 Radio Programming Methods ......................................... 22Terminal Interface............................................................ 22PC-Based Configuration Tool .......................................... 226.2 User Commands ............................................................23Entering Commands ....................................................... 236.3 Detailed Command Descriptions .................................... 28ADDR [1–65000]............................................................. 29 Network Address AMASK [0000 0000–FFFF FFFF]...................................29 Alarm Mask AT [ON, OFF] .................................................................. 29 Hayes-Compatible AT Command Support ASENSE [HI/LO] ............................................................. 29 Alarm Output Sense BAUD [xxxxx abc]............................................................ 29 Data Interface Port Baud Rate BAND [A, B, C]................................................................ 30 Select Sub-Band (Normally used for 2.4 GHz model) BUFF [ON, OFF] ............................................................. 30 Data Buffer Mode CODE [NONE, 1…255]................................................... 31 Security Code CSADDR [1–65000, NONE]............................................ 31 Clock-Synchronizing Master Address CTS [0–255].................................................................... 31 Clear-to-Send Delay](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-4.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide iiiCTSHOLD [0–60000].......................................................32 Clear-to-Send Hold Time DEVICE [DCE, CTS KEY] ..............................................32 Radio-MODEM Behavior DLINK [xxxxx/ON/OFF]....................................................32 InSite Diagnostics Link Support DKEY...............................................................................33 Turn Off Radio Transmitter ‘s Test Signal DTYPE [NODE/ROOT] ....................................................33 Network Diagnostics Mode FEC [ON, OFF]................................................................33 Forward Error Correction HOPTIME [7, 14, 28] .......................................................34 Radio Transmitter Hop Timing INIT..................................................................................34 Initialize; Restore to Factory Defaults HREV...............................................................................35 Hardware Revision KEY..................................................................................35 Turn On Radio Transmitter Test Signal LED [ON, OFF] ................................................................36 Enable/Disable PCB LEDs LPM [1, 0] ........................................................................36 Low-Power Mode—Masters Only LPMHOLD [0–1000] ........................................................36 Low-Power Mode Sleep Time MODE [M, R, X]...............................................................36 Radio Operating Mode MRSSI [NONE, –40...–90]...............................................37 Minimum RSSI for Mobile Operation OT [ON, OFF] ..................................................................37 Output Trigger OWM [xxxxx]....................................................................37 “Owner’s Message” OWN [xxxxx] ....................................................................37 “Owner’s Name”](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-5.png)
![iv MDS TransNET I&O Guide MDS 05-2708A01, Rev. D PORT [RS232, RS485] ................................................... 37 Data Interface Port Signaling Standard PWR [20–30]................................................................... 38 Radio Transmitter Power Level REPEAT [0–10] ............................................................... 38 Downstream Repeat Transmission Count RETRY [0–10] ................................................................. 38 Upstream Repeat Transmission Count RSSI................................................................................ 38 Received Signal Strength Indicator RTU [ON, OFF, 0-80]....................................................... 39 Remote Terminal Unit Simulator RX [xxxx].........................................................................39 Radio Receive Test Frequency RXD [0–235] / [ON/OFF].................................................39 RXD Delay RXTOT [NONE, 0–1440]................................................. 40 Receive Data Timeout-Timer SAF [ON, OFF]................................................................ 40 Store-and-Forward Services Support SETUP ............................................................................ 40 Setup Radio Test SER................................................................................. 40 Radio Serial Number SHOW CON .................................................................... 41 Show Virtual Connection Status SHOW PWR.................................................................... 41 Show Measured RF Transmit Power SHOW SYNC .................................................................. 41 Show Clock-Synchronization Master Network Address SKIP [NONE, 1...8].......................................................... 41 Skip Radio Operating Zones SLEEP [ON, OFF]...........................................................42 Transceiver Sleep—Remotes Only SREV .............................................................................. 42 Firmware Revision Level](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-6.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide vSTAT ................................................................................43 Alarm Status TEMP...............................................................................43 Radio’s Internal Temperature TX [xxxx]..........................................................................43 Radio Transmit Test Frequency UNIT [10000–65000] .......................................................43 Unit Address XADDR [0–31] .................................................................44 Extended Address XMAP [00000000-FFFFFFFF].........................................44 Map of Extension Addresses XPRI [0–31] .....................................................................44 Primary Extended Address XRSSI [NONE, –40...–120]..............................................44 Extension RSSI Level ZONE CLEAR..................................................................44 Clear Zone Statistics Log ZONE DATA .....................................................................44 Read Zone Statistics Log 7.0 TROUBLESHOOTING ...........................................................457.1 LED Indicators ................................................................467.2 Alarm Codes ...................................................................46Checking for Alarms—STAT command............................46Major Alarms versus Minor Alarms..................................46Alarm Code Definitions....................................................477.3 Troubleshooting Chart .....................................................487.4 Performing Network-Wide Remote Diagnostics ..............497.5 Internal Fuse Replacement .............................................50 8.0 RADIO FIRMWARE UPGRADES ..........................................518.1 Obtaining New Firmware ................................................51Saving a Web-Site Firmware File Onto Your PC..............518.2 Installing Firmware Into Your Radio .................................51 9.0 OPERATING PRINCIPLES AND CONFIGURATION.............52](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-7.png)
![20 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D •Remote radio(s) transmitting data (TXD) and receiving data (RXD) with Master station5.2 Performance OptimizationAfter the basic operation of the radio has been checked, you may wish to opti-mize its performance using some of the suggestions given here. The effective-ness of these techniques will vary with the design of your system and the format of the data being sent.Complete instructions for using the commands referenced in this manual are provided in “RADIO PROGRAMMING” on Page 22.Antenna AimingFor optimum performance, directional antennas must be accurately aimed in the direction of desired transmission. The easiest way to do this is to point the antenna in the approximate direction, then use the Remote radio’s RSSI command (Received Signal Strength Indicator) to further refine the heading for maximum received signal strength.In an MAS system, RSSI readings are only meaningful when initiated from a Remote station. This is because the Master station typically receives signals from several Remote sites, and the RSSI would be continually changing as the Master receives from each Remote in turn. Adjust the antenna for the highest (most positive) value to insure the greatest communication reliability.Table 6. LED indicator descriptionsName DescriptionPWR • Continuous—Power is applied to the radio; no problems detected• Flashing (5 times-per-second)—Fault indicationSee “TROUBLESHOOTING” on Page 45• Off—Radio is unpowered or in Sleep modeSee also, “LED [ON, OFF]” on Page 36SYNC Continuous—Radio is receiving/sending synchronization framesOn within 10 seconds of power-up under normal conditionsTXD Transmit data activity on the DB-9 DATA interface connectorPayload data to connected deviceRXD Receive data activity on the DB-9 DATA interface connector.Payload data from the connected devicePWR SYNC TXD RXD](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-30.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 21Antenna SWR CheckIt is necessary to briefly key the transmitter for this check by placing the radio in the SETUP mode (Page 40) and using the KEY command. (To unkey the radio, enter DKEY; to disable the SETUP mode and return the radio to normal operation, enter Q or QUIT.)The SWR of the antenna system should be checked before the radio is put into regular service. For accurate readings, a wattmeter suited for 1000 MHz is required. One unit meeting this criteria is the Bird Model 43 directional watt-meter with a 5J element installed.The reflected power should be less than 10% of the forward power (≈2:1 SWR). Higher readings usually indicate problems with the antenna, feedline or coaxial connectors.Data Buffer Setting—Modbus ProtocolThe default setting for the data buffer is OFF. This allows the radio to operate with the lowest possible latency and improves channel efficiency. MODBUS and its derivatives are the only protocols that should require the buffer to be turned on. See “BAND [A, B, C]” on Page 30 for details.Hoptime SettingThe default hop-time setting is 7 (7 ms). Alternate settings of 14 and 28 milli-seconds can be used to increase throughput, but at the cost of increased latency. A detailed explanation of the HOPTIME command can be found on Page 34.TotalFlow™ Protocol at 9600 with Sleep ModeFor reliable operation with TotalFlow meters, use the default settings for 9600 with the following alterations:HOPTIME 28—Allows large data packetsFEC OFF—Improves store-and-forward performance for a large contin-uous data streamBUFF ON—Ensures “ungapped” 4-second polls if unit in sleep modeOperation at 115200 bpsBurst throughput at 115200 bps is supported at all settings. The radio will always buffer at least 500 characters. Sustained throughput at 115200 bps is only possible when the data path is nearly error-free and the operating settings have been properly selected. For sustained operation at 115200 bps, use the following settings: SAF OFF, FEC OFF, REPEAT 0, RETRY 0, HOPTIME 28.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-31.png)
![22 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D Baud Rate SettingThe default baud rate setting is 19200 bps to accommodate most systems. If your system will use a different data rate, you should change the radio’s data interface speed using the BAUD xxxxx abc command (Page 29). It should be set to the highest speed that can be sent by the data equipment in the system. (The transceiver supports 300 to 115200 bps.)Radio Interference ChecksThe radio operates in eight frequency zones. If interference is found in one or more of these zones, the SKIP command (Page 41) can be used to omit them from the hop pattern. You should also review Section 3.3, A Word About Radio Interference, when dealing with interference problems.6.0 RADIO PROGRAMMINGThere are no manual adjustments on the radio. Programming and control is performed through a PC connected to the radio’s DIAG connector. 6.1 Radio Programming MethodsTerminal InterfaceA PC may be used by operating it in a basic terminal mode (for example, a HyperTerminal session) and entering the radio commands listed in the tables found in “User Commands” on Page 23. The PC must be connected to the radio’s DIAG connector using an RJ-11 to DB-9 Adapter Cable (MDS P/N 03-3246A01). If desired, a cable of this type may be constructed using the information shown in Figure 21 on Page 69.Once connected, communication (baud rate) is established through the command interface. To access the command interface, press the key, followed by one or more keystrokes (delivered at about half-second intervals), until the “>” prompt is displayed.NOTE: The DIAG port (RJ-11 connector) uses 8 data bits, 1 stop bit, and no parity. It can automatically configure itself to function at 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200 bps. [Default: BAUD = 9600]If the DLINK setting is ON, the DIAG port will start out in Diagnostic Link mode. This is a special protocol used to support Network-Wide Diagnostics. The pro-cess described in the paragraph above causes the radio to exit the diagnostic link mode and enter the command mode. If there is no input in command mode for 5 minutes, the DIAG port will revert back to diagnostic link mode.PC-Based Configuration ToolThe MS Windows™-based MDS TransNET Configuration Software (P/N 06-4059A01) is designed for use with a PC connected to the radio’s DIAG connector through an RJ-11 to DB-9 cable assembly (MDS Part No. 03-3246A01). A cable of this type may be constructed using the information shown in Figure 21 on Page 69.ESCENTER](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-32.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 23The TransNET Configuration Software provides access to all of the radio’s capabilities with the benefit of context-sensitive help. The program is shipped as part of the TransNET support CD included with every order (CD P/N 03-2708A02)6.2 User CommandsA series of tables begin on the next page that provide reference charts of various user commands for the transceiver. See “Detailed Command Descrip-tions” on Page 28 for more details.Entering CommandsThe proper procedure for entering commands is to type the command, followed by an keystroke. For programming commands, the command is followed by , the appropriate information or values, and then . Table 7. Network Configuration—Master Station COMMAND DESCRIPTION AT [ON, OFF] Details Page 29 Enables Master station to emulate a modem and respond to AT commandsBUFF [ON, OFF] Details Page 30 ON = Seamless dataOFF = Fast byte throughput.FEC [ON, OFF] Details Page 33 Sets/disables FEC (Forward Error Correction) setting.HOPTIME [7, 28]Details Page 34 Displays hop-time or sets it to 7 or 28 ms.LPM [1, 0]Details Page 36 Used at Master to set all associated stations in an energy-conservation mode.1 = Low-power mode enabled network-wide0 = Disable low-power mode (Default)REPEATDetails Page 38 Sets/displays the fixed downstream re-send count.RETRY [0–10]Details Page 38 Sets/displays the maximum upstream re-send count for ARQ (Automatic Repeat Request) operationSAF [ON, OFF] Details, page 40 Enables/disables the store-and-forward func-tion for the network controlled by this Master unit.SKIP [NONE, 1...8] Details, page 41 Skip one or more frequency zonesENTERSPACEENTER](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-33.png)
![24 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D Table 8. Network-Wide Diagnostics Command DescriptionDLINK [xxxxx/ON/OFF] Details, page 32 Controls operation of diagnostic link function.DTYPE [NODE/ROOT] Details, page 33 Set radio’s operational characteristics for network-wide diagnosticsTable 9. Operational Configuration—Set/Program Command DescriptionADDR [1–65000] Details, page 29 Program network addressAMASK [0000 0000–FFFF FFFF] Details, page 29 Alarm responseDefault: FFFF FFFFASENSE [HI/LO] Details, page 29 Sense of the alarm output on Pin 6 of the DATA interface connector in the EIA-232 mode. Default: Alarm present = HIBAND [A, B, C] Details Page 30 Selects one of three operating bands.(2.4 GHz Model Only)BAUD [xxxxx abc] Details, page 29 Data communication parametersCODE [NONE, 1…255] Details, page 31 Select the security/encryption setting in the radioCSADDR [1–65000, NONE] Details, page 31 Used on a single Master/Remote network to support TDD-style simulated full-duplex.CTS [0–255] Details, page 31 CTS delay in milliseconds(A value of 0 returns CTS immediately)CTSHOLD [0–60000] Details, page 32 “Hold time” that CTS is present following last character from DATA port.DEVICE [DCE, CTS KEY] Details, page 32 Device behavior: DCE (normal) or CTS KeyMODE [M, R, X] Details, page 36 Operating mode: M = Master, R = Remote, X = ExtensionMRSSI [NONE, –40...–90] Details, page 37 Minimum RSSI level required to preserve syn-chronization with a Master radio for Remotes in mobile service.OT [ON, OFF] Details, page 37 Enables a 1-second delay on delivery of RXD serial data.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-34.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 25 OWN [xxxxx] Details, page 37 Owner’s name, or alternate message(30 characters maximum)PORT [RS232, RS485] Details, page 37 Data port (DATA connector) interface signaling mode: RS232 or RS485PWR [20–30] Details, page 38 Power output in dBm (Figure 30 on Page 74)RXD [0–235] / [ON/OFF] Details, page 39 Set RXD delay time for virtual seamless mode with low latencyRXTOT [NONE, 0–1440] Details, page 40 Maximum duration (in minutes) before time-out alarm. Default is OFF.RTU [ON, OFF, 0-80] Details, page 39 Enable or Disable unit’s built-in RTU simulator. Default is OFF. Set RTU address between zero and 80.SLEEP [ON, OFF] Details, page 42 Enable or Disable the radio’s energy-conser-vation Sleep mode function.UNIT [10000–65000] Details, page 43 Unit address used for network-wide diagnostics. (Unique within associated net-work.)XADDR [0–31] Details, page 44 This unit’s Extended addressTypically, the Master is set to zero (0).XMAP [00000000-FFFFFFFF] Details, page 44 Included Extended units in MODE X. (Extensions and Remotes only) XPRI [0–31] Details, page 44 Address of the primary Extended radio unit (Extension).XRSSI [NONE, –40...–120] Details, page 44 Minimum RSSI level required to preserve syn-chronization with a non-primary radio. (Only meaningful when XPRI is not NONE)ZONE CLEAR Details, page 44 Reset zone data statisticsTable 10. Operating Status—Display Only Command DescriptionADDRDetails Page 29 Network addressAMASKDetails Page 29 Alarm mask (response)Table 9. Operational Configuration—Set/Program (Continued)Command Description](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-35.png)
![28 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D 6.3 Detailed Command DescriptionsThe essential commands for most applications are Network Address (ADDR), Mode (MODE), and Baud Rate (BAUD). However, proper use of the additional commands allows you to tailor the transceiver for a specific use, or to conduct basic diagnostics on the radio. This section gives more detailed information for the commands listed above in Section 6.2.Most of the commands below can be used in two ways. First, you can type only the command name (for example, ADDR) to view the currently programmed data. Second, you can set or change the existing data by typing the command, followed by a space, and then the desired entry (for example, ADDR 1234). In the descriptions which follow, allowable programming vari-ables, if any, are shown in brackets [ ] following the command name.XPRIDetails Page 44 Address of the primary Extended radio unit (Extension).XMAPDetails Page 44 Included Extended units in MODE X. (Extensions and Remotes only). XRSSIDetails Page 44 Minimum RSSI level required to preserve synchronization with a non-primary radio. (Only meaningful when XPRI is not NONE)Table 11. Diagnostic and Test Functions Command DescriptionKEYDetails Page 35 Enables the transmitter test. (Must be in Setup mode. Details on page 40.)DKEYDetails Page 33 Turns off the transmitter test. (Must be in Setup mode. Details on page 40.)TX [xxxx]Details Page 43 Set/display transmit test frequency. (Must be in Setup mode. Details on page 40.)RX [xxxx]Details Page 39 Set/display receive test frequency. (Must be in Setup mode. Details on page 40.)SETUPDetails Page 40 Enables Setup mode. Times out after 10 minutes. Press “Q” to quit.ZONE DATADetails Page 44 Zone data statisticsZONE CLEARDetails Page 44 Clears the Zone Data logTable 10. Operating Status—Display Only (Continued)Command Description](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-38.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 29ADDR [1–65000]Network AddressThis command sets or displays the radio’s network address. The network address can range from 1 to 65000.A network address must be programmed at the time of installation and must be common across each radio in a given network. Radios are typically shipped with the network address unprogrammed, causing the address to display as NONE. If the address is not set (or is set to a wrong value) it leaves the system in an invalid state, preventing operation and generating an alarm.NOTE: It is recommended that the last four digits of the Master radio’s serial number be used for the network address. This helps avoid conflicts with other users.AMASK [0000 0000–FFFF FFFF]Alarm MaskThis command sets the alarm bits that cause the alarm output signal to be trig-gered. The PWR LED will still flash for all alarms, but the alarm output signal will only be activated for those alarms that have the corresponding mask bit set. The hex value for the mask aligns directly with the hex value for the ALARM command. The default is FFFF FFFF. Through proper use of the AMASK command, it is possible to tailor the alarm response of the radio. Contact the factory for more information on configuring the alarm mask.AT [ON, OFF]Hayes-Compatible AT Command SupportAT-style modem commands, also know as “Hayes-Compatible Commands”, can be processed through the payload port. By setting AT ON at the Master (MODE M), individual Remotes can be accessed by using ATDT [Unit Address]. In this mode, RTUs designed only for dial-up access can be accessed through the Master station. For more details, see See “Using AT Commands” on Page 55 and “OT [ON, OFF]” on Page 37.ASENSE [HI/LO]Alarm Output SenseThis command is used to set the sense of the alarm output at Pin 6 of the DATA connector. The default is HI which means an alarm is present when an RS-232 high is on Pin 6.BAUD [xxxxx abc]Data Interface Port Baud RateThis command sets or displays the communication attributes for the normal payload communications through the DATA port. The command has no effect on the RJ-11 DIAG(NOSTICS) port.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-39.png)
![30 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D The first parameter (xxxxx) is baud rate. Baud rate is specified in bits-per-second and must be one of the following speeds: 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, or 115200. At baud rates of 19200 bps or less, the radio can support unlimited continuous data transmis-sion at any hop rate.The second parameter of the BAUD command (abc) is a 3-character block indicating how the data is encoded. The following is a breakdown of each character’s meaning:a = Data bits (7 or 8)b = Parity (N for None, O for Odd, E for Even)c = Stop bits (1 or 2)The factory default setting is 9600 baud, 8 data bits, no parity, 1 stop bit (Example: 9600 8N1).NOTE: 7N1, 8O2, and 8E2 are invalid communication settings and are not supported by the transceiver.BAND [A, B, C]Select Sub-Band (Normally used for 2.4 GHz model)This command sets or displays the receiving and transmit operating band for the radio.A = 2.4016–2.4270 GHzB = 2.4272–2.4526 GHzC = 2.4528–2.478.2 GHzNOTE: The same BAND must be programmed at the time of installation and must be common across each radio in a given network. BUFF [ON, OFF]Data Buffer ModeThis command sets or displays the received data handling mode of the radio. The command parameter is either ON or OFF. (The default is OFF.) The setting of this parameter affects the timing of received data sent out the DATA connector. Data transmitted over the air is unaffected by the BUFF setting.If data buffering is set to OFF, the radio will operate with the lowest possible average latency. Data bytes are sent out the DATA port as soon as an incoming RF data frame is processed. Average and typical latency will both be below 10 ms, but idle character gaps may be introduced into the outgoing data flow.If data buffering is ON, the radio will operate in a seamless mode. That is, data bytes will be sent over the air as quickly as possible, but the receiver will buffer the data until the entire packet has been collected. The delay introduced by data buffering is variable and depends on message size and the number of retransmissions required, but the radio will not create any gaps in the output data stream. This mode of operation is required for protocols such as MODBUS™ that do not allow gaps in their data transmission.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-40.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 31Seamless mode (BUFF ON) is intended only for applications where the message size is 256 characters or less. Enforcement of this rule is left up to the user. If more than 256 characters are transmitted data delivery will not be seamless and data may be lost.Changes to the BUFF setting may only be made at the Master radio. This is because the Master radio broadcasts the buffer setting for the entire network. At Remote radios, the buffer setting may be read when the radio is in synchro-nization with the Master, but it cannot be changed.CODE [NONE, 1…255]Security CodeThe CODE command is used to select or display the security/encryption setting in the radio.The default is CODE NONE. Setting CODE to a value other than NONE provides an extra level of security beyond that provided by the Network Address (ADDR). The disadvantage is increased complexity in managing the network. The CODE command takes an argument 1…255, or NONE. Entering CODE without an argument will display either NONE or ACTIVE. ACTIVE means that security/encryption has been enabled, but the radio will not display the security argument.When a CODE value is active, all radios in the system must use the same code value. If the code value is not properly programmed, a Remote radio will not synchronize with the Master.CAUTION: Record the CODE value and store it in a safe place. If the code is later forgotten, and a unit is to be added to the system, all radios in the network must be set to NONE and then reprogrammed to a new value.CSADDR [1–65000, NONE]Clock-Synchronizing Master AddressUsed to specify the network address of a “Clock-Sync” Master station to which this station will be synchronized. Also see “ADDR [1–65000]” on Page 29 and “Co-Located and Close-Proximity Masters” on Page 63 for further details.CTS [0–255]Clear-to-Send DelayThe CTS (clear-to-send) command sets or displays the timer value associated with the CTS line response. The command parameter ranges from 0 to 255 milliseconds.For DCE operation, the timer specifies how long to wait after the RTS line goes high before asserting the CTS line. A timer value of zero means that the CTS line will be asserted immediately following the assertion of RTS.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-41.png)
![32 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D For CTS Key operation (see the DEVICE command), the timer specifies how long to wait after asserting the CTS line before sending data out the DATA port. A timer value of zero means that data will be sent out the data port without imposing a key-up delay. (Other delays may be in effect from other radio operating parameters.)CTSHOLD [0–60000]Clear-to-Send Hold TimeUsed in DEVICE CTS KEY mode, this command sets the amount of time in milliseconds that CTS remains present following transmission of the last character out the RXD pin of the DATA port. This “hold time” can be used to prevent squelch tail data corruption when communicating with other radios.The CTSHOLD setting can range from 0 to 60000 (i.e., 60 seconds). The default value is 0, which means that CTS will drop immediately after the last character is transmitted. If the command is entered when the radio is in DEVICE DCE mode, the response CTSHOLD N/A will be displayed.DEVICE [DCE, CTS KEY]Radio-MODEM BehaviorThe DEVICE command sets or displays the device behavior of the radio. The command parameter is either DCE or CTS KEY.The default selection is DCE. In this mode, CTS will go high following RTS, subject to the CTS programmable delay time. Keying is stimulated by the input of characters at the data port. Hardware flow control is implemented by dropping the CTS line if data arrives faster than it can be transmitted.If CTS KEY is selected, the radio is assumed to be controlling another radio, such as in a repeater or tail-end link system. The RTS line is ignored and the CTS line is used as a keyline control for the other radio. CTS is asserted immediately after the receipt of RF data, but data will not be sent out the DATA port until after the CTS programmable delay time has expired. (This gives the other radio time to key.)Following transmission of the last byte of data, CTS will remain asserted for the duration specified by the CTSHOLD command. CTSHOLD should be set sufficiently high.DLINK [xxxxx/ON/OFF]InSite Diagnostics Link SupportDLINK ON enables use of Diagnostic Link mode and establishes it as the default protocol on the RJ-11 DIAG port. Diagnostic Link mode is a special protocol used to support Network-Wide Diagnostics. DLINK must be set to ON to support connection to InSite or to support chained diagnostics between radio networks even while the radio is in sleep mode. DLINK OFF disables this feature. The default setting is ON.The following DLINK baud rates selections are supported:• 1200 • 4800 • 9600 • 19200 (default)](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-42.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 33• 38400 • 57600 • 115200Example: DLINK 4800 sets the RJ-11 DIAG port to operate at 4800 bps when diagnostics is closed. This setting will not affect the port’s autobaud opera-tion. Use only of DLINK ON, will enable the use 19200 or the most recently programmed value. The default is DLINK 19200 and DLINK ON. NOTE 1: The same baud rate must be entered into the InSite Equipment List’s BAUD field.NOTE 2: The DLINK rate must match the rate of any connected device to the diagnos-tic port. This may be either another MDS radio’s diagnostic port, InSite com-puter, or another data link device that eventually connects to the InSite computer.DKEYTurn Off Radio Transmitter ‘s Test SignalDisables the transmitter when it is keyed. See also KEY command.DTYPE [NODE/ROOT]Network Diagnostics ModeThe DTYPE command specifies the radio’s operational characteristics for network-wide diagnostics. The transceiver uses the following types:•NODE—The most common setting, and the default. This is the basic system radio device-type. Typically, the radio network is comprised of nodes and one root. Intrusive diagnostics can originate from any node. However, non-intrusive diagnostics can only be conducted from the root node.•ROOT—Always one, and only one, per network (including units associated through Extension units.) The root is the focal point of network-wide diagnostics information. Intrusive diagnostics can originate from any radio, including the root. However, the root is the only radio through which non-intrusive diagnostics can be conducted.FEC [ON, OFF]Forward Error CorrectionThis command is used to view the FEC setting, or turn it on or off. The default setting is FEC ON. (It needs to be turned off when throughputs exceed 57,600 bps.) FEC is set at the Master and is automatically passed on to all Remotes in a network.Setting FEC to ON improves sensitivity at the cost of reduced throughput. Typical SCADA/telemetry applications use low data rates and, as such, the FEC setting is normally transparent to them.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-43.png)
![34 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D HOPTIME [7, 14, 28]Radio Transmitter Hop TimingThe HOPTIME command is used to set or display the hop-time setting. The command is a digit corresponding to the hop-time setting in milliseconds. The default HOPTIME setting is 7. A setting of 28 must be used when throughputs exceed 57,600 bps and is recommended when data transmission sizes exceed 256 bytes.Changes to the HOPTIME setting may only be made at the Master radio. (This is because the Master radio establishes the hop-time setting for the entire network.) At Remote radios, the hop-time setting may be read when the radio is in synchronization with the Master, but it cannot be changed.INITInitialize; Restore to Factory DefaultsThe INIT command is used to reset the radio’s operating parameters to the factory defaults listed in Table 12 on Page 34. This may be helpful when trying to resolve configuration problems that resulted from the entry of one or more improper command settings. If you are unsure of which command setting caused the problem, this command allows you to get back to a known working state.NOTE: Caution should be exercised when using the INIT command on radios in a sys-tem employing the Store-and-Forward feature. Settings relating to the use of Ex-tension services will be lost and will need to be re-entered. Record the settings for XADDR, XPRI and XMAP before using the INIT command.SPECIAL NOTE: Installing firmware of Revision 3.0 or later into a radio with Revisions 1.x firm-ware will preserve the radio’s compatibility with other radios running Revision 1.x firmware. If updating the radio’s firmware is part of a system-wide upgrade, the last step should be to use the INIT command at the Master station. Use of the INIT command causes the changes shown in Table 12 to be applied.Table 12. INIT Command Generated Defaults Parameter Default SettingCorresponding CommandFor ALL radiosAlarm Mask FFFF FFFF AMASKAlarm Output Sense RS-232 High (+5.0 Vdc) ASENSEDevice Operation DCE DEVICE DCEDATA Interface Port • 9600 baud• 8 data bits• none (no parity)• 1 stop bitBAUD 9600 8N1Data Port Setting RS/EIA-232 PORT RS232CTS Delay 0 (CTS is continuously asserted) CTS 0CTS Hold-Time 0CTSHOLD 0](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-44.png)
![36 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D LED [ON, OFF]Enable/Disable PCB LEDsLED ON enables/disables the PCB board mounted LEDs seen only with the transceiver’s covers removed. LED is normally OFF, it may be useful to have them on for testing the radio with the covers removed. Note: the external LEDs will be dimmer if the LED function is left ON.The LED command also affects the operation of the LEDs in the “Low-Power Mode” (LPM). When LED is OFF, the radio keeps the PWR and SYNC LEDs extinguished.LPM [1, 0]Low-Power Mode—Masters OnlyThis feature trades increased latency to gain power savings. Low-power mode (LPM) automatically saves power at a Remote by instructing the Remote to shutdown for large periods of time in between SYNC messages. Master transmissions are automatically blocked while the Remotes are asleep. Note, both Masters and Remotes are adaptive and will suppress a normal sleep interval if data transmission or reception is in progress.•LPM 1 at the Master enables low-power mode network-wide; all Remotes pick it up and start saving power by automatically sleeping.LPM 1 can work in conjunction with the AT dialing feature. The dialed unit will be forced awake; all others will sleep.•LPM 0 at the Master to disable low-power mode (Default setting).The SLEEP command must be enabled for LPM to function. Further, when you enable LPM, the LEDs on the Remote radio dim even though the LPM function is not properly enabled by turning on SLEEP. For more information, see “Low-Power Mode (LPM)—Master Enabled” on Page 60, and “Low-Power Mode versus Remote’s Sleep Mode” on Page 62.LPMHOLD [0–1000]Low-Power Mode Sleep TimeUsed to give an RTU time (0-1000 ms) to respond before the radio goes to sleep. Value determines how long to suppress auto-sleep following reception of the last character sent out of the RXD serial data port.NOTE: Any values entered will be rounded to the nearest multiple of 4 ms.To verify the exact hold time, enter LPMHOLD, the response will give you the value currently being used.MODE [M, R, X]Radio Operating ModeThe MODE command sets or displays the operating mode of the radio. A Master radio is set by MODE M; a Remote set by MODE R, and an Extension is set by MODE X.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-46.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 37All units default to Remotes; other modes must be specifically programmed with the MODE command.If MODE X is used, the MODE X radio should be programmed with an Extended Address (XADDR). Units that need to hear this MODE X radio must be programmed with an appropriate XPRI and/or XMAP value.MRSSI [NONE, –40...–90]Minimum RSSI for Mobile OperationThe MRRSSI command sets or displays the minimum RSSI level (dBm) of a Master station’s signal to maintain synchronization. When the Master’s signal falls below this level, the Remote will attempt to resynchronize with the next Master it can hear within the same network—same Network Address (ADDR)—and, meets the MRSSI level. See “Mobile Operation Support” on Page 62 for additional information.OT [ON, OFF]Output TriggerThe “output trigger” feature sets up a 1-second default delay on delivery of RXD serial data, however, a receipt of RTS causes cancellation of timer followed by immediate data delivery.Hierarchy Rules:• if OT = ON, RTS always cancels data delay and outputs immediately• if OT = ON, DEVICE = DCE, and RXD = 0, data delay is 1 second or until RTS• if DEVICE = DCE, and RXD = N, data delay is N ms• if DEVICE = CTS KEY, and CTS = N, data delay is N ms or until RTS• if DEVICE = CTS KEY overrides RXD, RXD overrides OT default.OWM [xxxxx]“Owner’s Message”The OWM command sets or displays an optional owner’s message, such as the system name. The entry can contain up to 30 characters.OWN [xxxxx] “Owner’s Name”The OWN command sets or displays an optional owner’s name, such as the site name. The entry can contain up to 30 characters.PORT [RS232, RS485]Data Interface Port Signaling StandardSelect or identify the current data port (DATA connector) interface signaling mode: RS232 or RS485. This is the port though which the payload data will](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-47.png)
![38 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D pass. Pin descriptions for EIA-232 are on page 69 and EIA-485 can be found on page 71. PWR [20–30]Radio Transmitter Power LevelThis command displays or sets the desired RF power output of the radio. The PWR command parameter is specified in dBm and can be adjusted in 1 dBm steps. The default setting is 30 dBm (1 watt) for the 900 MHz model and 27 dBm (0.5 watt) for the 2400 MHz model. To read the actual (measured) power output of the radio, use the SHOW PWR command.In the USA, maximum allowable power is governed by FCC limits on Effec-tive Isotropic Radiated Power output (EIRP). The EIRP limit of +36 dBm on the 900 and 2400 MHz band, means that any user with a net antenna gain greater than 6 dBi on the 900 MHz band, or 9 dBi on the 2400 MHz band, must decrease the PWR setting accordingly. “How Much Output Power Can be Used?” on Page 12 contains a detailed discussion of this topic.REPEAT [0–10]Downstream Repeat Transmission CountThe REPEAT command affects “downstream” data. The command causes a Master or Extension to always repeat transmissions for the specified number of times (range is 0 to 10; default selection is 3). Unlike the RETRY command, there is no acknowledgment that a message has been received.Use the REPEAT command without a value to display the current setting.RETRY [0–10]Upstream Repeat Transmission CountThe RETRY command affects upstream data. The command selects, or displays, the maximum number of times (0 to 10) that a Remote radio will re-transmit data. The default setting is 10.This command is associated with ARQ (Automatic Repeat Request) opera-tion of the radio and is intended for use in areas with heavy radio interference.When the RETRY command is issued without parameters, the maximum retransmission count is shown. A value of 0 represents no retries, while values of 1 or greater successively improve the chance of data delivery in spectrally harsh environments (at the expense of possibly increased latency). The RETRY value is only setable at the Master. It is readable by a synchro-nized Remote.RSSIReceived Signal Strength IndicatorThis command displays the radio’s Received Signal Strength Indication in dBm (decibels relative to 1 mW). The output can range from –40 dBm to –120 dBm. Command availability and results depend on the mode of opera-tion (Master or Remote). The closer to 0 dBm, the stronger the signal, thus a reading of –70 dBm is stronger than –80 dBm.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-48.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 39For a Remote radio, under normal operation, RSSI is based on the average signal strength of the SYNC message received in each of the eight frequency zones. (RSSI is sampled each time a SYNC message is received.) When using the RSSI reading to align a directional antenna, it is important to make changes slowly so that the RSSI reading will provide meaningful results. It will take several seconds to indicate a change in signal level. The radio stays in RSSI mode until is pressed.For a Master radio, under normal operation, entering the RSSI command causes the response NOT AVAILABLE to be returned. This is because a Master is normally receiving signals from several Remote stations and an RSSI reading would be continually changing. The only exception is when the SETUP command has been asserted. This disables hopping and allows reading a “raw” RSSI signal level in real time from a Master or Remote radio.NOTE 1: RSSI readings will not accurately indicate signals stronger than –40 dBm.NOTE 2: RSSI works for Dependent Masters. Command displays “NOT AVAILABLE” if the Dependent Master is not synchronized.RTU [ON, OFF, 0-80]Remote Terminal Unit SimulatorThis command re-enables or disables the radio’s internal RTU simulator, which runs with MDS’ proprietary polling programs (poll.exe and rsim.exe). The internal RTU simulator is available whenever a radio has diagnostics enabled. This command also sets the RTU address to which the radio will respond.The internal RTU can be used for testing system payload data or pseudo bit error rate (BER) testing. It can be helpful in isolating a problem to either the external RTU or the radio. The default RTU setting is OFF.RX [xxxx]Radio Receive Test FrequencyThis command sets or displays the test receive frequency used in place of hopping when the radio is in SETUP mode. The test receive frequency can be reprogrammed to any value between 902.200 MHz and 927.800 MHz, inclu-sive. The factory default setting is 915.000 MHz.RXD [0–235] / [ON/OFF]RXD DelayUsed to set a delay, in milliseconds, of RXD data to emulate a seamless mode with much lower latency in applications where retries are not required. Use a delay of twice the value of the HOPTIME period (See page 34).Entering a RXD ON (0 ms default) or RXD XX will enable the function. Entering RXD OFF will disable the function and erase any stored value.ENTER](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-49.png)
![40 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D RXTOT [NONE, 0–1440]Receive Data Timeout-TimerThis command sets or displays the amount of time (in minutes) to wait for the next received data packet before issuing a receiver time-out alarm. The default setting is NONE.SAF [ON, OFF]Store-and-Forward Services SupportThis command enables/disables the operation of the Store-and-Forward services. It can be set only at the network’s Master station, but will effect all radios in the associated network. The default setting is OFF. See related commands: “XADDR [0–31]” on Page 44, “XPRI [0–31]” on Page 44, and “XMAP [00000000-FFFFFFFF]” on Page 44.SETUPSetup Radio TestThis command sets up the transceiver for checking antenna SWR or trans-mitter power with external measuring equipment. Do not use this mode during normal operation.When the SETUP command is entered, the prompt changes to SETUP>, and:• Hopping is disabled.•Synthesizer frequencies are reset to the test frequencies specified by the TX and RX commands described earlier.•The radio can be keyed using the KEY command. DKEY is used to unkey the radio. (If the radio is left in a keyed state it is automatically unkeyed after 10 minutes.)• The RSSI is sampled in a raw, continuous fashion regardless of whether the unit is a Master or a Remote.Entering Q or QUIT returns the system to normal operation.A timer keeps the Setup mode from accidentally leaving the system disabled. After 10 minutes the system behaves as if Q or QUIT had been entered, returning the unit to normal operation.NOTE: TransNET uses a automatic level control in normal operation to keep transmit power constant over time. This facility is disabled in Setup mode. To test 1 Watt power output in Setup mode, the user must enter PWR 30 followed by KEY. The power output will only be valid for the first couple of seconds. SERRadio Serial NumberDisplays the serial number of the radio.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-50.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 41SHOW CONShow Virtual Connection StatusShows virtual connection status established by the latest ATDT command sequence. (Works only with AT ON. See“AT [ON, OFF]” on Page 29)If no connection is established, it displays NONE.If a connection is active, it will display:<Master unit address> TO <Remote (“dialed”) unit address>.SHOW PWRShow Measured RF Transmit PowerThe SHOW PWR command displays the actual (measured) RF power output in dBm. Unlike the PWR command, this command shows the actual level being measured, not the programmed RF power setting.SHOW SYNCShow Clock-Synchronization Master Network AddressWhen used at a Remote station, this command will display Extended Address and Unit Address of the Master or Extension radio to which the Remote is synchronized. The network depth at the Remote, defined as the number of downstream links from the Master, is displayed in parentheses.SHOW SYNC works for Dependent Masters. A value of zero (0) means the station is a Master synchronized to a Clock-Sync Master. The SHOW SYNC command will display an asterisk (*) after depth value if the radio is operating with co-located Masters.SKIP [NONE, 1...8]Skip Radio Operating ZonesThis command sets or displays which, if any, of the eight zones will be skipped from the radio’s hopping sequence. Skipping zones is one way of dealing with constant interference on one or more frequencies in the radio’s operating band. See “A Word About Radio Interference” on Page 8 for more information on dealing with interference.Tables 13, 14, 15 and 16 show the frequency range covered by each zone. The command parameter is either the keyword NONE or an undelimited string of up to four digits where each digit 1...8 represents a corresponding zone to skip. (For zone parameter input, the digits can appear in any order and can be optionally separated by a blank space.) The SKIP command is display-only at Remote radios. (Remotes must be synchronized with the Master radio to display the skip status.)](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-51.png)
![42 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D In the USA, a maximum of four zones may be skipped for TransNET 900 and a maximum of three zones may skipped for TransNET 2400. Check the regu-latory requirements for your region. The SKIP function may not be permitted in your country and the radio will not respond to the SKIP command. SLEEP [ON, OFF]Transceiver Sleep—Remotes OnlyThis command is used to set or display the radio’s Sleep Mode setting. The default setting is SLEEP OFF. When this setting is ON (enabled) the Low-Power, or RTU-forced Sleep Mode, can be used. This function cannot be turned on for a Master or Extension radio unless the unit is in the Low-Power Mode. See “Using the Radio’s Sleep Mode (Remote Units Only)” on Page 59 and “Low-Power Mode versus Remote’s Sleep Mode” on Page 62 for more information.SREVFirmware Revision LevelThis command displays the version of the firmware currently loaded into the transceiver.Table 13. 900 MHz Frequency Skip ZonesZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 ZONE 8902.2to905.2905.4to908.4908.6to911.6911.8to914.8915.0to918.0918.2to921.2921.4to924.4924.6to927.6Table 14. 2400 MHz, Band A, Frequency Skip ZonesZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 ZONE 82401.6to2404.62404.8to2407.82408.0to2411.02411.2to2414.22414.4to2417.2417.6to2420.62420.8to2423.82424.0to2427.0Table 15. 2400 MHz, Band B, Frequency Skip ZonesZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 ZONE 82427.2to2430.22430.4to2433.42433.6to2436.62436.80to2439.82440.0to2443.02443.2to2446.22446.4to2449.42449.6to2452.6Table 16. 2400 MHz, Band C, Frequency Skip ZonesZONE 1 ZONE 2 ZONE 3 ZONE 4 ZONE 5 ZONE 6 ZONE 7 ZONE 82452.8to2455.82456.0to2459.02459.2to2462.22462.4to2465.42465.6to2468.62468.8to2471.82472.0to2475.02475.2to2478.2](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-52.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 43A display of 06-4040A01, 3.6.1 is an example of the firmware version identi-fier—part number followed by release/version number.STATAlarm StatusThis command is used to check the alarm status of the radio. If no alarms exist, the message NO ALARMS PRESENT is returned.If an alarm does exist, a two-digit alarm code (00–31) is displayed and the event is identified as a “Major” or “Minor” alarm. A brief description of the event is also given.If more than one alarm exists, the word MORE appears, and additional alarms may be viewed by pressing the key. Detailed descriptions of the alarm codes are provided in Table 18 on Page 47.TEMPRadio’s Internal TemperatureThis command displays the internal temperature of the transceiver in degrees Celsius. (Note that the radio is specified to operate in an environment between –30° C and +60° C). This internal reading may be higher than the outside temperature by several degrees.TX [xxxx]Radio Transmit Test FrequencyThis command sets or displays the test transmit frequency used in place of hopping whenever the radio is in Setup mode. The test transmit frequency for the 900 MHz radios can be reprogrammed to any value between 902.200 MHz and 927.800 MHz, inclusive. The factory default setting is 915.000 MHz. For the 2400 MHz radios, the test frequency can be programmed to any frequency between 2400.6 MHz and 2482.0 MHz. The default value is 2436.0 MHz.UNIT [10000–65000]Unit AddressThis command sets the unit addressing for network-wide diagnostics and AT-Command address. The unit address is factory programmed to the last four digits of the radio’s serial number. If re-programmed in the field, the entry must consist of five digits between 10000 and 65000.ENTER](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-53.png)
![44 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D XADDR [0–31]Extended AddressUsed to display or program the Extended Address of this radio that will serve as a common address for the sub-network synchronized to this Master or Extension. This value can be listed in the XPRI parameter of associated Exten-sion or Remote radios to allow them to synchronize to this radio. We recom-mend setting the Master to zero (0). It is easy to remember, and is the default address when the INIT command is used. (Programmed only in Master and Extension radios.)XMAP [00000000-FFFFFFFF]Map of Extension AddressesXMAP is a 32-bit hex entry where the least significant bit represents XADDR 0 and the most significant bit represents XADDR 31. The full 32-bit hex value represents the entire list of extensions with which the radio will be allowed to communicate. (Pertains to Remotes and Extensions only.)This parameter is easily programmed through the MDS TransNET Configu-ration Software’s Store-and-Forward Settings panel.XPRI [0–31]Primary Extended AddressWill display or program the extended address of the primary radio with which this radio will attempt to synchronize and communicate. A setting of NONE allows the unit to synchronize with any Master or Extension in the XMAP list. (Parameter only meaningful for Remote or Extension units.)XRSSI [NONE, –40...–120]Extension RSSI LevelThe XRSSI command is used to set the RSSI minimum signal level required to preserve synchronization with a non-primary Extension radio. This param-eter will be ignored if XPRI is set to NONE.ZONE CLEARClear Zone Statistics LogThe ZONE CLEAR command clears the zone data for all zones in the Zone Data Log, resetting the count to 0. (Zone data is also cleared automatically upon reboot.)ZONE DATARead Zone Statistics LogThe transceiver divides its frequency operating spectrum into eight 3.0 MHz-wide zones or sub-bands. (These are the same zones referenced by the SKIP command described earlier.) Data frame statistics are maintained for each zone to indicate the transmission quality of data through the network. This information is useful for identifying zones where significant interference exists.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-54.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 45Historical information on the quality of each zone can be accessed using the ZONE DATA command. The report shows you the number of data frames sent, the number received, and the number received with errors. If an excessive number of errors are seen in one or more frequency zones, it may indicate interference, and you should consider “skipping” those zones using the SKIP command (See “SKIP [NONE, 1...8]” on Page 41).Note: If a frequency zone has been skipped, all counts for that zone will be zeros.The ZONE DATA format is displayed as follows:1:TX TOTAL 000000001:RX TOTAL 000000001:RX ERROR 00000000x:x:x:8:TX TOTAL 000000008:RX TOTAL 000000008:RX ERROR 00000000All data is based on payload packets. Incoming network data may be divided into multiple packets for over-the-air transfers. The number before the colon represents the zone. TX TOTAL is the transmit packet total. RX TOTAL is the receive packet total. RX ERROR is the total number of received packets with CRC errors. All zone data is reset with the ZONE CLEAR command.7.0 TROUBLESHOOTINGSuccessful troubleshooting of an MDS transceiver system is not difficult, but requires a logical approach. It is best to begin troubleshooting at the Master station, as the rest of the system depends on the Master for polling instruc-tions and synchronization data. If the Master station has problems, the oper-ation of the entire network will be affected.When communication problems are found, it is good practice to begin by checking the basics. All radios in the network must meet these basic require-ments:• Adequate and stable primary power• An efficient and properly aligned antenna system• Secure connections (RF, data & power)• Proper programming of the radio’s operating parameters, especially Operating Mode (MODE), Network Address (ADDR), and interface Baud Rate (BAUD). For TransNET 2400 check the sub-band (BAND).• The correct interface between the radio and the connected data equipment (proper cable wiring, data format and timing).• In store-and-forward systems there are several areas that should be checked or evaluated:•Look for duplicate XADDR values on MODE M and MODE X radios. Duplicates will cause failures unless the radios are too far apart to hear each other.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-55.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 497.4 Performing Network-Wide Remote DiagnosticsDiagnostics data from a Remote radio can be obtained by connecting a laptop or personal computer running MDS InSite diagnostics software (Version 6.6 or later) to any radio in the network.NOTE: The diagnostics feature may not be available in all radios. The ability to query and configure a radio via Network-wide Diagnostics is based on the feature op-tions purchased in the radio being polled.If a PC is connected to any radio in the network, intrusive polling (polling which briefly interrupts payload data transmission) can be performed. To perform diagnostics without interrupting payload data transmission, connect the PC to a radio defined as the “root” radio. A radio is defined as a root radio using the DTYPE ROOT command locally, at the radio.A complete explanation of Remote diagnostics can be found in MDS’ Network-Wide Diagnostics System Handbook (MDS P/N 05-3467A01).1. Program one radio in the network as the root radio by entering the DTYPE ROOT command at the radio.2. At the root radio, use the DLINK ON and DLINK [baud rate] commands to configure the diagnostic link protocol on the RJ-11 port.3. Program all other radios in the network as nodes by entering the DTYPE NODE command at each radio.4. Use the DLINK ON and DLINK [baud rate] commands to configure the diagnostic link protocol on the RJ-11 port of each node radio.5. Connect a PC on which MDS InSite software is installed to the root radio, or to one of the nodes, at the radio’s diagnostics port.To connect a PC to the radio’s DIAG port, an RJ-11 to DB-9 adapter (MDS P/N 03-3246A01) is required. If desired, an adapter cable may be constructed from scratch, using the information shown in Figure 21 on Page 69.6. Launch the MDS InSite application at the PC. (Refer to the InSite user’s manual for details.)Table 20. Network-Wide Diagnostics CommandsCommand DescriptionDLINK [xxxxx/ON/OFF] Details, page 32 Set baud rate of diagnostics linkDTYPE [NODE/ROOT] Details, page 33 Set radio’s operational characteristics for net-work-wide diagnostics](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-59.png)
![54 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D 1. Mode X and M Radios—Can have direct reports (Mode R radios) out-side of the chain.2. Data (Payload)—Travels from Master to Remote, and back from Remote to Master.3. Mode X and R Radios—Extension links can be protected by mapping one or more fall-back paths in case of a failure. Add secondary exten-sion addresses (XADDR) into the XMAP table. (See “XMAP [00000000-FFFFFFFF]” on Page 44.) For example, as shown in Figure 19, Remote “D” could use Remote “C” as its extension primary, and Remote “B” (X ADDR = 1) as an alterna-tive in case of a failure of Remote “C” (X ADDR = 2). This arrangement assumes a serviceable path between Remotes “D” and “B”, and requires Remote “D” to be programmed with XMAP = 2 to correspond with the XADDR address of Remote “B.”Invisible place holderFigure 19. SAF Configuration ExampleThis configuration is easily arranged through the use of the Extension Map in the MDS TransNET Configuration Software’s “Store-and-For-ward Settings.”9.2 Synchronizing Network UnitsThe Master controls the synchronization for a given network for all modes. Setting the Master to SAF ON broadcasts a command from the Master to all radio units in the associated network either directly or through an Extension radio. This command puts all radios in the entire system in a special time-division duplexing mode that alternates between two timeslots. One time slot for data communications upstream and the second for downstream communications.The Extensions are single radios which serve as bridges between adjacent sub-network levels. Extensions will undertake a “Remote personality” in one timeslot, and a “Master personality” in the alternate timeslot and provide communications with associated Remotes downstream. Extensions behave like two radios with their data ports tied together, first synchronizing with their upstream Master during their Remote personality period, and then providing synchronization signals to dependent Remotes downstream during its Master personality period.ABCDEMODE = MADDR = 1234X ADDR = ØX PRI = NoneMODE = XADDR = 1234X ADDR = 1X PRI = ØMODE = XADDR = 1234X ADDR = 2X PRI = 1MODE = XADDR = 1234X ADDR = 3X PRI = 2XMAP = 2MODE = RADDR = 1234X ADDR = 4X PRI = 3TransNETRadios:RadioConfguration:](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-64.png)
![56 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D connections where wire lines were the only communications link available at the time. Most of these older system implemented support for the AT commands needed in the host software, so TransNET units can be used without software modifications.In this mode, the Master’s DATA port is parsed for a subset of AT commands. (See Supported Commands below). When an ATDTxxxxx data sequence is detected, and xxxxx is a unit address of a radio in the network, the TransNET Master will establish a virtual link to that unit. It will remain in that state until either another ATDTxxxxx or ATH (hang-up/disconnect) is detected. (Note: Unaddressed Remotes in the network will not respond to user data. Data will only be exchanged between the equipment connected to the addressed Remote unit and the network or device connected to the Master’s DATA port.In order to use this mode, the command AT ON must be selected at the Master Radio. The acknowledgment to an ATDT command is simulated by the Master; there is no true verification that the far-end connection is valid.Please consider the following additional information before using the AT commands:• Radio commands and AT commands are independent with unique syntax and functional objectives.•ATDT is not a radio command; it is part of the payload data input and follows the syntax for Hayes-compatible modems.•TransNET commands are entered through the RJ11 DIAGNOSTIC port on Master and Remote radios. AT ON and UNIT are examples of TransNET commands.•AT commands are only entered through the Master’s DB-9 DATA port, and only when the TransNET command AT ON has been previously issued. The radio supports a subset of the Hayes-compatible modem AT set. Each command is entered without spaces, and always begins with AT, and ends with a carriage return key press.Supported AT Commands Supported modem commands on the payload port are:AT <attention>Replies with OK (Code 0).ATDT[xxxxx] <dial>The command xxxxx represents 5-digit unit address with a leading zero (0) if applicable. This command replies with CONNECT (Code 1). Once connected, all characters are passed through until a +++ is seen.ATH <hang up> or +++This command replies with OK (Code 0) and deletes any virtual connection to the currently addressed Remote station.ATV[x] <change verbosity>x = 0, means use numeric messagesx = 1, means use text messages (Default)Replies with OK (Code 0)](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-66.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 57AT <command errors>Replies with ERROR (Code 4)Characters with <no AT command> Modem will echo characters in data stream but will be ignored until a second “AT” is seen at which time the modem closes the virtual connection.Operation Notes When AT Commands are ON• Radios will not poll with the embedded RTU simulator unless a connection is established.•Network-wide diagnostics are unaffected by the dialed unit connection status.• The use of the TransNET OT command (Output Trigger) can be of benefit in some configurations. See “OT [ON, OFF]” on Page 37 for configuration details.9.4 Configuration Parameters for Store-and-Forward ServicesThe installation and configuration of a radio network with an Extension using SAF is straightforward with only a few unique parameters that need to be considered and set at each unit.In every network there can be only one Master station. It will serve as the sole gateway to the outside world. The following three tables detail the parameters that will need to be set on each type of radio in the network. • Network Master Radio—Table 21 on Page 57• Extension Radio(s)—Table 22 on Page 58• Remote Radio(s)—Table 23 on Page 59 Table 21. Configuration Parameters for SAF ServicesNetwork Master Radio Parameter Command DescriptionOperating Mode MODE MDetails Page 36 Sets the radio to serve as a Master.Network Address ADDRDetails Page 29 A number between 1 and 65,000 that will serve as a common network ad-dress.All radios in the network use the same number.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-67.png)
![60 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D It is important to note that power consumption will increase somewhat as communication from the Master station degrades. This is because the radio will spend a greater period of time “awake” looking for synchronization messages from the Master radio.In order for the radio to be controlled by Pin 4, the unit’s Sleep Mode must be enabled through the SLEEP [ON, OFF] command. See “SLEEP [ON, OFF]” on Page 42 for more information.NOTE: If INTRUSIVE polling is used in the MDS’ InSite NMS software, it is necessary to select SLEEP MODE INHIBIT ON from the Polling Options menu, on the Network Wide Diagnostic Polling screen.Sleep Mode ExampleThe following example describes Sleep Mode implementation in a typical system. Using this information, you should be able to configure a system that meets your own particular needs.Suppose you need communications to each Remote site only once per hour. Program the RTU to raise an EIA/RS-232 line once each hour (DTR for example) and wait for a poll and response before lowering it again. Connect this line to Pin 4 of the radio’s DATA connector. This will allow each RTU to be polled once per hour, with a dramatic reduction in power consumption.9.6 Low-Power Mode (LPM)—Master EnabledThe Low-Power Mode (LPM) puts Remote radios into a configuration similar to Sleep, but with some important distinctions. The most important difference is the radio will automatically go to sleep in this mode, regardless of the condition of Pin 4 of the DATA interface connector.This feature trades increased latency to gain power savings. The low-power mode (LPM) automatically saves power at a Remote by instructing the Remote to shutdown for long periods of time between SYNC messages. Master transmissions are automatically blocked while the Remotes are asleep. Note, both Masters and Remotes are adaptive and will suppress a normal sleep interval until after the end of a current data transmission or reception.Setup CommandsThese are the command options and their applications:•LPM 1 at the Master enables low-power mode network-wide; all Remotes pick it up and start saving power by automatically sleeping.LPM 1 can work in conjunction with the AT dialing feature. The dialed unit will be forced awake; all others will sleep.•LPM 0 at the Master is used to disable low-power mode (LPM)(Default setting following an INIT or firmware upgrade.)For LPMHOLD 0 with REPEAT 0 setting, a Remote with no data to send will consume about 1/4 of its normal power consumption. Note that the SLEEP command must be enabled for the LPM to function.](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-70.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 61Reading RSSI and Other Parameters with LPM EnabledIt may be desired to perform tests and review operational settings of a Remote radio which has been programmed to operate in the low-power mode. Follow the abbreviated procedure below to interact with the radio through a local computer.• Disconnect the Remote’s antenna to force it to lose sync with the Master• Power-down the radio• Connect a computer running TransNET configuration software to the Remote’s DIAG(nostic) port.• Power-up the radio• Reconnect the antenna• Measure the RSSI or review and change any parameters you desirePower Consumption Influence by HOPTIME and SAF SettingsTable 24 presents representative current consumption and data delay values for various settings of TransNET radios setup for Low Power Mode, LPM (See “LPM [1, 0]” on Page 36). It assumes the primary power voltage is 13.8 Vdc and the polling rate is minimized to yield best-case power consump-tion (current) values.The more each RTU is polled and asked to transmit, the more current will be consumed. Therefore, these values are the lowest that can be expected. Power consumption (current) is inversely related to data delay as shown in the table. When a radio is sleeping (LPM) mode, it is also waiting longer to deliver the payload data.Note, the Store-and-Forward setting has a significant effect on power consumption, as it effectively doubles the HOPTIME to support LPM services. For the most power-efficient operation, turn on SAF even if you are not using repeaters.Table 24. Power Consumption versus Hoptime and SAF SettingsHOPTIME SAF Current (ma) Data Delay7 OFF 16 350 ms7ON10780 ms28 OFF 7 1620 ms28 ON 4 3360 ms](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-71.png)
![MDS 05-2708A01, Rev. D MDS TransNET I&O Guide 65Invisible place holderFigure 20. Co-Located Masters Sharing an Antenna9.13 SecurityToday, the operation and management of an enterprise is becoming increasing dependent on electronic information flow. An accompanying concern becomes the security of the communication infrastructure and the security of the data itself. MDS takes this matter seriously, and provides several means for protecting the data carried over its wireless products.The radio addresses this issue primarily through the use of the following items: 1. A proprietary modem/data link layer—Data signals are processed using code and hardware specifically designed by MDS.2. A unique Network Address—This provides a unique identifier for each radio in a network. A radio is not addressable unless this unique code is included in the data string.3. An optional encryption value (code)—Setting an encryption code requires the use of the CODE command. This command scrambles the radio’s hop pattern and encrypts payload data content. A radio requires the correct Network Address (ADDR) and CODE value in order to synchronize. When the CODE command is used, the same value must be programmed into all radios in the network. See “CODE [NONE, 1…255]” on Page 31 for more details.The effective combination of CODE and ADDR discourage the use of an exhaustive search to gain access to a system. The items described above provide sufficient security for a typical MAS system. For more highly-sensitive applications, system designers should consider employing application level encryption into their polling protocols to further protect their systems. Third party software tools are available for adding encryption, and these should be considered as part of any advanced encryption scheme.Master—Network “A”CS MasterPowerDivider (– 3 dB)OmnidirectionalAntennaMaster—Network “B”CS SlaveNetwork “A” Network “B”](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-75.png)
![70 MDS TransNET I&O Guide MDS 05-2708A01, Rev. D Pin Descriptions—RS/EIA-232 ModeTable 27 lists the DATA connector pin functions for radios configured to operate in RS/EIA-232 mode. NOTE: The radio is hard-wired as a DCE in the EIA-232 mode.Table 27. DATA connector pin descriptions—RS/EIA-232 PinNumberInput/Output Pin Description1 OUT DCD (Data Carrier Detect)A “high” indicates hopping synchronization.2 OUT RXD (Received Data)Supplies received data to the connected device.3INTXD (Transmitted Data)Accepts TX data from the connected device.4INSleep—A ground on this pin turns off most circuits in a Re-mote radio, including transmit, receive, modem, and diag-nostic functions. This allows for greatly reduced power consumption, yet preserves the radio’s ability to be quickly brought on line. See “Using the Radio’s Sleep Mode (Re-mote Units Only)” on Page 59 for details.5INSignal Ground—Connects to ground (negative supply potential) on the ra-dio’s PC board and chassis.6 OUT Alarm Output—An RS-232 high/space (+5.0 Vdc) on this pin indicates an alarm condition. An RS-232 low/mark (–5.0 Vdc) indicates normal operation. This pin may be used as an alarm output. (See ASENSE [HI/LO] Details, page 29 for further information.)7INRTS (Request-to-Send)8 OUT CTS (Clear-to-Send)—Goes “high” after the programmed CTS delay time has elapsed (DCE), or keys an attached ra-dio when RF data arrives (CTS KEY).9--Reserved for Special Uses (Do not connect)](https://usermanual.wiki/GE-MDS/DS-EL805.user-manual/User-Guide-900430-Page-80.png)
