d.dinh
Member
Hi all,
I'm trying to setup a commreq block for a GE Rx3i PLC (IC695CPE310 c/w embedded ethernet) to read 30 registers of data from a Satec PM180 Power Meter via Modbus TCP.
Unfortunately I don't have access to these units in the office to test before commissioning on site so I was hoping for some clarifications/2nd opinions on the parameters setup for the read request (I think I'm comfortable with the open/close requests).
My read request setup parameters can be seen below:
I want to read the 1 second phase values from the power meter (p54-55 of the modbus reference manual) in register address of 13952-13981.
In section 2.5 (page 12) of the reference manual, I've interpreted the mapping of register addresses to add 400001 to the register address (6-digit
addressing scheme?) which results in my starting address of 413953.
I'm not too entirely sure what the Unit Identifier is/should be. I'm also not too sure if there are any other tidbits that I need to set up/initialise in the GE PLC as well.
I have been using:
- TCP/IP Ethernet Communications for PACSystems* RX3i and RX7i (GFK-2224L)
- PM180 Manual & Modbus Reference (too big to attach but can be downloaded at: http://satec-global.com.au/manuals#pas
Any insights would be greatly appreciated.
Regards,
Duy
I'm trying to setup a commreq block for a GE Rx3i PLC (IC695CPE310 c/w embedded ethernet) to read 30 registers of data from a Satec PM180 Power Meter via Modbus TCP.
Unfortunately I don't have access to these units in the office to test before commissioning on site so I was hoping for some clarifications/2nd opinions on the parameters setup for the read request (I think I'm comfortable with the open/close requests).
My read request setup parameters can be seen below:
I want to read the 1 second phase values from the power meter (p54-55 of the modbus reference manual) in register address of 13952-13981.
In section 2.5 (page 12) of the reference manual, I've interpreted the mapping of register addresses to add 400001 to the register address (6-digit
addressing scheme?) which results in my starting address of 413953.
I'm not too entirely sure what the Unit Identifier is/should be. I'm also not too sure if there are any other tidbits that I need to set up/initialise in the GE PLC as well.
I have been using:
- TCP/IP Ethernet Communications for PACSystems* RX3i and RX7i (GFK-2224L)
- PM180 Manual & Modbus Reference (too big to attach but can be downloaded at: http://satec-global.com.au/manuals#pas
Any insights would be greatly appreciated.
Regards,
Duy