RS485 2 Master Station Communication Repeater, Inter-Master Station Communication Modbus Protocol Data Sharer

ThermostatsModule parametersModel: GC-503 (RS485 two-master communication repeater)Working voltage: DC9~30VWorking current: 100mAFunction overview: realize data interaction between two Modbus master stationsApplicable protocol: Modbus-RTUCache size: 500 register data can be cached*2Interface: 2 RS485 interfaces (both connected to the master station)Indicator lights: 3 indicator lights (one power light + two communication indicator lights)Product size: length, width and height 100x54x32mm (including both ends)Product weight: 80g (net weight) 100g (gross weight, including accessories and box)Operating environment: -40~85, relative humidity 5%-95%Communication parametersCommunication type: Isolated RS-485 (isolation voltage 2500V)Communication protocol: Modbus RTU (master + slave)Communication distance: 1200 metersBaud rate: 1200 -115200bps, default 9600 (8,n,1)Others: Stop bit can be set, check bit can be setProtection level: RS-485 interface 600W surge protection per line, ±15KV ESD protectionInterface definitionMain station 2 endTerminal/Mark/DefinitionThe 1/485A/MA2 port needs to be connected to the master station, and GND generally does not need to be connected.The 2/485B/MA2 port needs to be connected to the master station, and GND generally does not need to be connected.3/GND/MA2 port needs to be connected to the master station, GND generally does not need to be connectedMain station 1 endTerminal/Mark/Definition1/GND/power 0V2/VCC/Power supply 12~30V3/485B/MA1 interface needs to be connected to the master stationThe 4/485A/MA1 interface needs to be connected to the master stationTurn the DIP switch /ON/ to ON, and the module enters configuration mode.Turn the DIP switch /OFF/ to OFF and the module starts running.Indicator light descriptionPWR: power indicator light. Always on means the module is poweredMA1, MA2 interface indicator lights. Flashing indicates that the MA1 and MA2 interfaces are communicating.==========Supply Voltage : DC9~30VType : Voltage RegulatorCondition :

• Thermostats
• RS485 2 Master Station Communication Repeater, Inter-Master Station Communication Modbus Protocol Data Sharer