CHAPTER 7: MODBUS COMMUNICATIONS
MODBUS MEMORY MAP
PQM POWER QUALITY METER – INSTRUCTION MANUAL
7–73
F7
UNSIGNED INTEGER - COMMAND
FFFF
1 = Reset
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2 = Alarm Relay On
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3 = Alarm Relay Off
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4 = Auxiliary Relay 1 On
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5 = Auxiliary Relay 1 Off
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6 = Auxiliary Relay 2 On
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7 = Auxiliary Relay 2 Off
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8 = Auxiliary Relay 3 On
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9 = Auxiliary Relay 3 Off
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10 = Set Clock Time
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11 = Set Clock Date
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12 = Display 40 character Flash Message for 5 s
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13 = Simulate Keypress
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14 = Clear Energy Values
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15 = Clear Max. Demand Values
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16 = Clear Min./Max. Current Values
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17 = Clear Min./Max. Voltage Values
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18 = Clear Min./Max. Power Values
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19 = Clear Max. THD Values
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20 = Clear Switch Input Pulse Count
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21 = High Speed Sampling Trigger
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22 = Upload Mode Entry 2
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23 = Upload Mode Entry 1
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F7
con’t
24 = Factory Setpoints Reload 2
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25 = Factory Setpoints Reload 1
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26 = Test Relays and LEDs
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27 = Waveform Capture Trigger
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28 = Start Data Log(s)
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29 = Stop Data Log(s)
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30 = Resize Data Logs
(valid only if both logs are stopped)
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31 = Clear Event Record
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32= Trigger Trace Memory
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33= Re-arm Trace Memory
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34= Clear All Demand
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35= Clear Min./Max. Frequency
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Table 7–11: Memory Map Data Formats (Sheet 2 of 20)
CODE
DESCRIPTION
BITMASK