GE Multilin 745 Communications Manual page 95

CHAPTER 2: MODBUS PROTOCOL
745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
F73: Parity (16-bit enumeration)
Value Parity
0 None
1 Odd
2 Even
F74: Edit setpoint group (16-bit enumeration)
Value Setpoint group
0 Group 1
1 Group 2
2 Group 3
2 Group 4
2 Active group
F75: Virtual input programmed state (16-bit enumeration)
Value State
0 Open
1 Closed
F76: FlexLogic™ equation error (16-bit enumeration)
Value Error
0 None
1 Output relay 1
2 Output relay 2
3 Output relay 3
4 Output relay 4
5 Output relay 5
6 Output relay 6
7 Output relay 7
F77: Bad transformer settings error (16-bit enumeration)
Value Error
0 None
1 W1-W2 ratio mismatch
2 W2-W3 ratio mismatch
3 Load loss
4 Winding 1 eddy current loss
F78: Unsigned value, auto-ranging based on winding 1 phase CT primary value (16 bits)
For winding 1 phase CT primary ≤ 2 A, F78 is an unsigned value with three decimal places.
For example, 1.234 is stored as 1234.
For 2 A < winding 1 phase CT primary ≤ 20 A, F78 is an unsigned value with two decimal
places. For example, 12.34 is stored as 1234.
For 20 A < winding 1 phase CT primary ≤ 200 A, F78 is an unsigned value with one decimal
place. For example, 123.4 is stored as 1234.
For 200 A < winding 1 phase CT primary ≤ 2000 A, F78 is a standard unsigned value. For
example, 1234 is stored as 1234.
For winding 1 phase CT primary > 2000 A, F78 is a standard unsigned value scaled by 10.
For example, 12340 is stored as 1234.
Value Error
8 Output relay 8
9 Trigger trace memory
10 Virtual output 1
11 Virtual output 2
12 Virtual output 3
13 Virtual output 4
14 Virtual output 5
Value Error
5 Winding 2 eddy current loss
6 Winding 3 eddy current loss
7 Winding 1 rated load
8 Winding 2 rated load
9 Winding 3 rated load
MODBUS PROTOCOL
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