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APPENDIX B: MODBUS MAPPING FOR EPM2200
6
M denotes a 1,000,000 multiplier.
7
Not applicable to EPM2200
8
Writing this register causes data to be saved permanently in EEPROM. If there is an error
while saving, a slave device failure exception is returned and programmable settings mode
automatically terminates via reset.
9
Reset commands make no sense if the meter state is LIMP. An illegal function exception will
be returned.
10
Energy registers should be reset after a format change.
11
N/A
13
N/A
All 3 voltage angles are measured for Wye and Delta hookups. For 2.5 Element, Vac is
measured and Vab & Vbc are calculated. If a voltage phase is missing, the two voltage
angles in which it participates are set to zero. A and C phase current angles are measured
for all hookups. B phase current angle is measured for Wye and is zero for other hookups. If
a voltage phase is missing, its current angle is zero.
If any register in the programmable settings section is set to a value other than the
acceptable value then the meter will stay in LIMP mode. Please read the comments section
or the range for each register in programmable settings section for acceptable settings.
N/A
14
15
16
APPENDIX B–12
EPM 2200 MULTI-FUNCTION POWER METERING SYSTEM – USER GUIDE