V230 Using Labview DSC and Modbus

[Mark Renner]

Hi,

I have 5 Unitronics v230 Plc's that i want to network and use tcp to communicate modbus back to Labview DSC scada application. Does any one have any ideas on setup of ethernet etc and modbus to achieve this result or example to forward.New to port setups etc.

[Joe Tauser]

Do some digging on NI's website for the LabView code.

Here's the Modbus library:

LabView Modbus Libary 1.21

Be sure to read the user comments about a bug in one of the vi's.

Here's NI's Modbus introduction:

NI Modbus intro

Assuming the V230's will be slaves, all you have to do on the Unitronics side is configure the Ethernet port, trigger a Modbus IP configuration block with SB 2, and hang a Modbus IP ScanEX block on the rail.

Joe T.