Technical FAQs

Ask a Question

How can I connect to a M340 via Modbus serial using Unity Pro V12?

The default Modbus Comm parameters to connect to a M340 are:
Baudrate: 9600
Bits: 8
Parity: Even
Node Address: 1

The RS232 modbus cable pinout:
4 and 6 jumped (DB9 side only)
7 and 8 jumped (DB9 side only)
3 and 6 jumped (RJ45 side only)

Legacy KB System (APS) Data: RESL206767 V1.0, Originally authored by MiMe on 11/29/2011, Last Edited by MiMe on 11/29/2011
Related ranges: Modicon M340
Was this helpful?
What can we do to improve the information ?