Delta DVP plc Modbus Communication with SCADA

delta dvpsv plc communication with deltartu485 module

hi,
i am facing a problem to communication delta dvpsv plc thorugh delta rtu485 i have added a di/do module attached with delta rtu485 but how do i set the input or output by using which command may i set the output or input pls give me a sample programme ..its a modbus communication
best regards,
farhan

hi dears
i tried to connect DVPEN01 by citect scada. i went to Delta website and downloaded Citect With DVPSV file and i could to connect PLC but i have a problem now and this is i can not read Digital Output Variable tag? however i can read Digitl Input tag and Analog input Varible tags.

Delta DVP Modbus RTU Sample

shrirampendse said:

Hi,
In your DVP software open comm programm menu , configure RS485 port and set para as per your requirement.
send me your mail ID , I will send sample programme.

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Hello, maybe you can send me sample? Thanks in advance.

abbasmech said:

modbusA /9600/even/7/1

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I have no idea what the difference between Modbus A, B or C is, but for sure, 7 bit words over RS-458 are for Modbus ASCII ONLY.

Modbus RTU uses 8 bit data words over RS-485.