5–2
EPM 5100 ELECTRONIC POWER METER – USER GUIDE
CHAPTER 5: COMMUNICATIONS
5.1.3
Modbus Register Maps
The register map for the EPM 5100 are illustrated below. These tables list the registers that
may be accessed by the host computer over the Modbus network.
The registers are divided into four sections:
1.
Fixed value registers (addresses R40000 to R40009)
2.
Dynamic values registers (addresses R31000 to R31118)
3.
Setpoint registers (addresses R43000 to R43032)
4.
Command coils (addresses R00000 to R00003)
The fixed value registers contain information relating to parameters that are either factory
set and cannot be changed by the user or can only be changed via the faceplate of the
EPM 5100. The contents of these registers do not vary during the operation of the device.
513
Internal
Communication
Restored
N/A
B0:Old Data, data from device is not up to
date
B1:Busy Flag, Previously commanded
transaction still in progress
B5:Data Not Ready, the first full set of data is
not yet acquired by the device
Remaining Bits: Unused
520
Configuration
Change
N/A
Address of changed Setpoint
522
Address Conflict
Detected
N/A
N/A
543
Hardware Failure/
BIT Failure
N/A
B3:A/D Converter Failure
B2: NVM FailureB1: ROM FailureB0: RAM
Failure
578
Remote SetPoint
Change Failed
N/A
N/A
579
Partial Energy Loss
Error
N/A
N/A
580
Complete Energy
Loss Error
N/A
N/A
581
Meter Errors
Cleared Locally
N/A
N/A
582
Meter Initialized
Locally
N/A
N/A
583
Demand Reset
Locally
N/A
N/A
585
Unspecified General
Failure
N/A
N/A
Table 5–1: EPM 5100 Events
Event
code
(decimal)
Meaning
Register 1
Register 5
Содержание EPM 5100
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