A Siemens power meter with a Modbus TCP/IP interface will not allow setting of the Device ID - only the IP parameters. Continuum Modbus TCP/IP Xdriver Remote Device Status Point (aka Comms Point] does not work if the Device ID is set to 0.
Modbus TCP/IP Xdriver
Continuum Xdriver Modbus TCP/IP Remote Device Status Point does not work if the Device ID is set to 0.
Set the Device ID = 1 when configuring the Modbus TCP/IP Xdriver Comms Point
For more information refer to page 12 of the Modbus TCP/IP Xdriver User Guide linked here.