CHAPTER 7: MODBUS COMMUNICATIONS MODBUS MEMORY MAP
PQM POWER QUALITY METER – INSTRUCTION MANUAL 7–41
WAVEFORM
CAPTURE
HEADER
0620 Time - Hours/Minutes of Last Capture --- --- --- F22 N/A
0621 Time - Seconds of Last Capture --- --- --- F23 N/A
0622 Date - Month/Day of Last Capture --- --- --- F24 N/A
0623 Date - Year of Last Capture --- --- --- F25 N/A
0624 Frequency of Last Capture --- --- 0.01 x Hz F1 N/A
0625 Reserved
0626 Reserved
0627 Reserved
WAVEFORM
CAPTURE
Ia
0628
0629
Ia Waveform Capture Scale Factor (high)
Ia Waveform Capture Scale Factor (low)
--- --- A x 10000 F3 N/A
062A Ia Sample Buffer 1 --- --- ADC
counts
F2 N/A
062B Ia Sample Buffer 2 --- --- ADC
counts
F2 N/A
062C Ia Sample Buffer 3 --- --- ADC
counts
F2 N/A
062D Ia Sample Buffer 4 --- --- ADC
counts
F2 N/A
to ↓ ↓ ↓ ↓ ↓ ↓
06A6 Ia Sample Buffer 125 --- --- ADC
counts
F2 N/A
06A7 Ia Sample Buffer 126 --- --- ADC
counts
F2 N/A
06A8 Ia Sample Buffer 127 --- --- ADC
counts
F2 N/A
06A9 Ia Sample Buffer 128 --- --- ADC
counts
F2 N/A
06AA Reserved
to ↓ ↓ ↓ ↓ ↓ ↓
06AF Reserved
WAVEFORM
CAPTURE
Ib
06B0
06B1
Ib Waveform Capture Scale Factor (high)
Ib Waveform Capture Scale Factor (low)
--- --- A x 10000 F3 N/A
06B2 Ib Sample Buffer 1 --- --- ADC
counts
F2 N/A
06B3 Ib Sample Buffer 2 --- --- ADC
counts
F2 N/A
06B4 Ib Sample Buffer 3 --- --- ADC
counts
F2 N/A
06B5 Ib Sample Buffer 4 --- --- ADC
counts
F2 N/A
to ↓ ↓ ↓ ↓ ↓ ↓
072E Ib Sample Buffer 125 --- --- ADC
counts
F2 N/A
Table 7–10: PQM Memory Map (Sheet 25 of 55)
GROUP ADDR
(HEX)
DESCRIPTION RANGE STEP
VALUE
UNITS and
SCALE
FORMAT FACTORY
DEFAULT
Notes:* Data type depends on the Command Operation Code.** Any valid Actual Values or Setpoints address.
*** Maximum Setpoint value represents “OFF”.**** Minimum Setpoint value represents “OFF”.
***** Maximum Setpoint value represents “UNLIMITED”.****** Applicable to older revisions with VFD display only
Courtesy of NationalSwitchgear.com
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