GE EPM 6000 Multi-function Power Metering System Modbus Communications, Memory Map Description

GE Consumer & Industrial

Multilin

EPM 6000 Multi-function Power

Metering System

Chapter 5: Communications

5.1Modbus Communications

5.1.1 Memory Map Description

The Modbus memory map is divided into four primary sections:

1.Fixed data registers: addresses 0001 to 0021.

2.Meter data registers: addresses 1000 to 5003.

The meter data registers read as “0” until the first readings are available or if the meter is not in operating mode. Writes to these registers will be accepted but will have no effect on the register.

3.Command registers: addresses 20000 to 26011.

The command registers always read as “0”. The may be written only when the meter is in a suitable mode. The registers return an illegal data address exception if a write is attempted in an incorrect mode.

4.Programmable settings registers: addresses 30000 to 30026.

All registers explicitly listed in the table read as “0”. Writes to these registers will be accepted but won’t actually the register, since it doesn’t exist.

5.1.2Memory Map

The Modbus memory map is shown below. Additional notes indicated in the memory map (“See Note ...”) are located at the end of the table, as well as a description of the format codes.

EPM 6000 MULTI-FUNCTION POWER METERING SYSTEM – USER GUIDE 5–1