Schneider Electric PM850, PM870 Appendix B-Register List, Register List Access, About Registers

63230-500-225A2	PowerLogicTM Series 800 Power Meter
3/2011	Appendix B—Register List

Appendix B—Register List

Register List Access

The register list corresponding to the latest firmware version can be found on line at the

Schneider Electric website.

1.Using a web browser, go to: www.Schneider-Electric.com.

2.Locate the Search box in the upper right corner of the home page.

3.In the Search box enter “PM8”.

4.In the drop-down box click on the selection “PM800 series”.

5.Locate the downloads area on the right side of the page and click on “Software/Firmware”.

6.Click on the applicable register list then download the document file indicated.

In addition you will find the latest firmware files and a firmware history file that describes the enhancements for each of the different firmware releases.

About Registers

For registers defined in bits, the rightmost bit is referred to as bit 00. Figure B–1shows how bits are organized in a register.

Figure B–1: Bits in a register

				High Byte								Low Byte
	0	0	0		0	0	0	1	0	0	0	1	0	0	1	0	0
15		14	13	12		11	10	09	08	07	06	05	04	03	02	01	00 Bit No.

The power meter registers can be used with MODBUS or JBUS protocols. Although the MODBUS protocol uses a zero-based register addressing convention and JBUS protocol uses a one-based register addressing convention, the power meter automatically compensates for the MODBUS offset of one. Regard all registers as holding registers where a 30,000 or 40,000 offset can be used. For example, Current Phase A will reside in register 31,100 or 41,100 instead of 1,100.

Floating-point Registers

Floating-point registers are also available. To enable floating-point registers, see “Enabling

Floating-point Registers” on page 91.

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