Delta DVP PLC Modbus serial read/write function demo 

#Delta DVP PLC Modbus serial
#Modbus Function code
This video will show you how to setup DVP PLC serial port COM2 (RS485) communication protocol and station (node) ID via function block.
Video just show single word read (function code 3)/write (function code 6), you can try write multiple words through function code H10 and other coil control by using different function code.