Can someone please supply the modbus function codes that the MPC-20 supports?

i.e. something like,

0x01 - read coils
0x03 - read holding register
0x04 - read input register
0x05 - write single coil
0x06 - write single holding register
0x0F - write multiple coils
0x10 - write multiple holding registers

Hello ocelot,

I apologize for being so slow to respond! We want to be sure to give you accurate information so we did a little research.

If your question is about function codes for the MPC20 standard configuration:

• The MPC20 standard configuration has a MODBUS slave and uses only holding registers so you should be able to use
• 0x03 - read holding register
• 0x06 - write single holding register
• 0x10 - write multiple holding registers

There is a spreadsheet attached with the map of the registers. If your question is about function codes for the MPC20 in general:

• You can see what it can do in PowerVision Configuration Studio if you open an MPC20 (Advanced) configuration, under the Connections, Serial Port1 and change the Protocol to Modbus RTU Master. Then select the Remote Slave Device; the Function Code Support and Function Code Limits panels show the function codes in between the parenthesis.

Again, I apologize for taking this long to respond. If you have more questions, I will try to respond faster.

That response answers my questions, and is adequate.

Thank you.