check_modbus_eem

This plugin checks the phoenix contact pmm-ma600 devices over modbus tcp. Maybe some other devices will work too.
You need to have an ethernet module and you need to active modbus tcp on your device.

Look at www.phoenixcontact.com for some manuals.

And you need mbclient perl module
https://github.com/sourceperl/MBclient

Usage:
-h print help
-H Hostname or IP
-U Unit or Slave ID (Modbus Parameter)
Now you need to choose between
-M Mode
or
-R Register (Modbus Parameter)
-Q Quantity (Modbus Parameter)

Modes:
Currents, Voltages, Voltages2, Power