2–20
745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
MODBUS PROTOCOL
CHAPTER 2: MODBUS PROTOCOL
020D
Instantaneous differential flag
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F52
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020E
Winding 1 phase time overcurrent flag
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F52
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020F
Winding 2 phase time overcurrent flag
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F52
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0210
Winding 3 phase time overcurrent flag
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F52
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0211
Winding 1 phase instantaneous overcurrent 1 flag
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F52
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0212
Winding 2 phase instantaneous overcurrent 1 flag
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F52
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0213
Winding 3 phase instantaneous overcurrent 1 flag
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F52
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0214
Winding 1 phase instantaneous overcurrent 2 flag
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F52
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0215
Winding 2 phase instantaneous overcurrent 2 flag
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F52
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0216
Winding 3 phase instantaneous overcurrent 2 flag
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F52
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0217
Winding 1 neutral time overcurrent flag
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F52
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0218
Winding 2 neutral time overcurrent flag
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F52
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0219
Winding 3 neutral time overcurrent flag
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F52
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021A
Winding 1 neutral instantaneous overcurrent 1 flag
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F52
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021B
Winding 2 neutral instantaneous overcurrent 1 flag
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F52
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021C
Winding 3 neutral instantaneous overcurrent 1 flag
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F52
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021D
Winding 1 neutral instantaneous overcurrent 2 flag
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F52
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021E
Winding 2 neutral instantaneous overcurrent 2 flag
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F52
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021F
Winding 3 neutral instantaneous overcurrent 2 flag
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F52
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0220
Winding 1 ground time overcurrent flag
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F52
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0221
Winding 2 ground time overcurrent flag
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F52
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0222
Winding 3 ground time overcurrent flag
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F52
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0223
Winding 1 ground instantaneous overcurrent 1 flag
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F52
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0224
Winding 2 ground instantaneous overcurrent 1 flag
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F52
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0225
Winding 3 ground instantaneous overcurrent 1 flag
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F52
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0226
Winding 1 ground instantaneous overcurrent 2 flag
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F52
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0227
Winding 2 ground instantaneous overcurrent 2 flag
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F52
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0228
Winding 3 ground instantaneous overcurrent 2 flag
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F52
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0229
Winding 1 restricted ground time overcurrent flag
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F52
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022A
Winding 2 restricted ground time overcurrent flag
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F52
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022B
Winding 3 restricted ground time overcurrent flag
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F52
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022C
Winding 1 restricted ground instantaneous overcurrent
flag
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F52
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022D
Winding 2 restricted ground instantaneous overcurrent
flag
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F52
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022E
Winding 3 restricted ground instantaneous overcurrent
flag
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F52
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022F
Winding 1 negative-sequence time overcurrent flag
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F52
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0230
Winding 2 negative-sequence time overcurrent flag
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F52
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0231
Winding 3 negative-sequence time overcurrent flag
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F52
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0232
Winding 1 negative-sequence instantaneous overcurrent
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F52
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0233
Winding 2 negative-sequence instantaneous overcurrent
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F52
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0234
Winding 3 negative-sequence instantaneous overcurrent
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F52
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0235
Underfrequency 1 flag
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F52
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0236
Underfrequency 2 flag
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F52
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0237
Frequency decay rate 1 flag
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F52
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0238
Frequency decay rate 2 flag
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F52
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0239
Frequency decay rate 3 flag
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F52
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Table 2–4: 745 memory map (Sheet 8 of 56)
Addr
Description
Range
Step
Units
Format
Default