Need to reset all energies on PM5560, remotely and automatically

[Jemeu]

So I am having issues getting the command semaphore through modbus using a red lion gateway with controllogix PLC.

I plan to get/read the command semaphore from Modbus register 405680 and then write that number to Modbus register 405001 and write 2020 to Modbus register 405000. So far I am unable to get that command semaphore from the red lion gateway. 

I'm trying to reset all energies automatically every month. Is there another suggestion on how I can accomplish that?

[Jesus_Diaz · Accepted solution]

Hi @Jemeu,

The "reset all energy" command can be used in the unprotected command interface (without semaphore; you can just use a value of 0).

Please find an example using Modbus Tester and how it looks in Wireshark:

Thank you,

JD

[Jemeu]

Thank you very much for your help. I'm using an Allen-Bradley Control Logix PLC with a Red Lion Gateway to send Modbus commands.

This worked with the Generic Modbus tester, however I was having trouble resetting the energy monitor with the PLC.

For some reason, it only works if I write 2020 in 405250 and 1 in 405251. Not a big problem though it works as it should now.