4-20mA/0-5V to RS485/232 MODBUS RTU Setting instructions | Automation.com

4-20mA/0-5V to RS485/232 MODBUS RTU Setting instructions

4-20mA/0-5V to RS485/232 MODBUS RTU Setting instructions

 

Setting Steps:

1.Connect power supply line and communication line(485 or 232 interface), Short circuit PIN7 and PIN8(as shown in the pictures below)

 

2.Open software “WAYJUN Test”,select communication serial port and baud rate,input command “$00P1”,click“Send”,if “Response”shows !00,it indicates that WJ21 or WJ31 device has been set to Modbus protocol.Then turn off the power supply,remove short lines between PIN3 and PIN6.(If no response,please check connection and communication interface)

 

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