communication with delta DVP20EX2 PLC using RS232 serial bus

[kush9368]

hello 

i want to communicate my delta plc DVP20EX2 with labview using RS232 serial port.

how i can monitor a coil,register from my PLC.please help

[a_clucker]

Hi kush,

"coil,register" - so you are communicating over serial Modbus?

If so, is it ASCII or RTU?

Have you used Modbus communications before?

NI has a modbus library that is included in the LabVIEW Real-Time and DSC modules. Do you have either of them? If not, there is also a library on the NI Community, but please note "this library...is unsupported." The libraries that ship with Real-Time and DSC are supported by NI.

[kush9368]

Yes i have dcs module..and i am using communication in ascii mode. I haven't use this any before.

[kush9368]

Thank you sir

I have done this using opc server.

Sir if we take labview professional system for Windows then opc server is included in this module?

Or we have to take it sapertly. 

[a_clucker]

Hi kush,

In order to use the Modbus IO server, you would only need LabVIEW and the DSC Module (two separate products).

If you're using an OPC Server to communicate, you would need the above products and the NI OPC Server (three separate products).

[kush9368]

Thank you sir.

I have done that using dsc libraries

Thanks