Schneider Electric PM850 Manual De Usuario
63230-500-225A2
PowerLogic
TM
Series 800 Power Meter
3/2011
Appendix B—Register List
© 2011 Schneider Electric All Rights Reserved
79
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.
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
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.
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–1 shows how
bits are organized in a register.
bits are organized in a register.
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.
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.
Floating-point Registers” on page 91.
Figure B–1: Bits in a register
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
0
0
0
0
0
0
0
1
0
1
0
1
0
0
0
0
Bit No.
00
High Byte
Low Byte