Hexing Electrical MJN956 AMI Meter HexNet User Manual
Hexing Electrical Co.,Ltd AMI Meter HexNet Users Manual
Users Manual
AMI Meter HexNet
（MJN956）
User Manual
Version Maker Date
V0.0.1 Shen
Dongdong 2017.11.24
HexingElectricalCo.,Ltd.
〉〉〉AMI Meter HexNet (MJN956）
1.Product Introduction
The AMI Meter HexNet is a highly integrated half-duplex
micropower wireless data transmission device. The Single Phase HexNet
embedded high-performance RF chip. User programming has very good
flexibility. This device operating frequency include
916.25-926.65MHz. The real figure as shown in the figure below.
The AMI Meter HexNet is mainly used in power system, electricity
information collection system.Mainly include the following
equipments： Data Collector，Smart Electric Meter，etc.
2.RF Module Chip Diagram
3.RF Module Pin Definition
Pin number Signal nameSignal categorySignal direction
1,2VCCPowerI
3,4GNDGNDI
5TXDUarttransmitPinO
6RXDUartreceivePinI
7D3.3VPowerO
8/RSTRESETPinI
9EVENTINEventPinI
10//N
5. RF operation
Insert the HexNet on user’s device，can use uart to communicate with HexNet
device.User don’t change anyting of the device，they will very easy to set up their
communication network.
6. Installation instructions
1）Please insert MJN956 on the corresponding interface, and ensure the pin interface
definitions are consistent with MJN956.
2）Interfaces are defined as follows：
13579
246810
PIN
PIN Interface
definition
Signal
category DirectionDescription
1,2VCCPower
Communication device analog
partofthepowersupply,voltage
is5-15.5V.
3,4GNDGND GND
5TXDSignalO
Communicationdata (TTL3.3V
level), serial portcommunicating
with the base table.Sendfrom
module
6RXDSignalI
Communicationdata reception (3.3
V TTL level), serialport
communicatingwiththebasetable.
Receivetomodule
7D3.3VPower
Powerprovidedbythemodule,
communicationmoduleofdigital
partofpower,voltageof3.3V+/‐
5%,theminimumcurrent50ma,
withVCCpowersupply,the
isolationopticalcouplingusedto
drivethecommunicationinterface.
8/RSTResetI
Resetmodule(lowleveleffectively,
effectiveleveltime100
milliseconds)
9EVENTINEventIEventmodule(Eventsreported)
10///Reserved
3）Equipment flip cover and seal
4）Terminal equipment using the lid well
5）Provide equipment machine right alternating current (AC) on the site
6）Equipment terminal cover screw to play well, and make seal
Installedinthesample
Installedinthesample
Electric meter models only for reference.
Note：
1 Thank you for using products of Hexing Electrical Co., Ltd. Please read this
warning before using our products. If you have already started to use is that you have
read and accept our all this.
2 All the final explanation and modification rights for all materials were reserved by
Hexing Electrical Co., Ltd.
This device complies with part 15 of the FCC Rules.Operation is subject to the following two
conditions: (1)This device may not cause harmful interference,and (2)this device must accept any
interference received,including interference that may cause undesired operation.
To satisfy FCC RF Exposure requirements for this transmission device,a separation distance of
20cm or more should be maintained between the antenna of this device and persons during
operation. To ensure compliance,operation at closer than this distance is not recommended.The
antenna(s) used for this transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter. Changes or modifications not expressly approved by the
party responsible for compliance could void the user’s authority to operate the equipment.