CHAPTER 2: MODBUS PROTOCOL
MODBUS PROTOCOL
745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
2–59
↓
↓
↓
↓
↓
↓
↓
21CF
Reserved
Winding 2 ground instantaneous overcurrent 2
21D0
Winding 2 ground instantaneous overcurrent 2 function
---
---
---
F30
0 = Disabled
21D1
Winding 2 ground instantaneous overcurrent 2 target
---
---
---
F46
1 = Latched
21D2
Winding 2 ground instantaneous overcurrent 2 pickup
0.05 to 20.00
0.01
×
CT
F3
1000=10.00xCT
21D3
Winding 2 ground instantaneous overcurrent 2 delay
0 to 60000
1
ms
F1
0 ms
21D4
Winding 2 ground instantaneous overcurrent 2 block
---
---
---
F87
0 = Disabled
21D5
Winding 2 ground instantaneous overcurrent 2 relays
1 to 8
---
---
F153
None
21D6
Reserved
↓
↓
↓
↓
↓
↓
↓
21DF
Reserved
Winding 3 ground instantaneous overcurrent 2
21E0
Winding 3 ground instantaneous overcurrent 2 function
---
---
---
F30
0 = Disabled
21E1
Winding 3 ground instantaneous overcurrent 2 target
---
---
---
F46
1 = Latched
21E2
Winding 3 ground instantaneous overcurrent 2 pickup
0.05 to 20.00
0.01
×
CT
F3
1000=10.00xCT
21E3
Winding 3 ground instantaneous overcurrent 2 delay
0 to 60000
1
ms
F1
0 ms
21E4
Winding 3 ground instantaneous overcurrent 2 block
---
---
---
F87
0 = Disabled
21E5
Winding 3 ground instantaneous overcurrent 2 relays
1 to 8
---
---
F153
None
21E6
Reserved
↓
↓
↓
↓
↓
↓
↓
21EF
Reserved
Winding 1 restricted ground fault
21F0
Winding 1 restricted ground fault function
---
---
---
F30
0 = Disabled
21F1
Winding 1 restricted ground fault target
---
---
---
F46
1 = Latched
21F2
Winding 1 restricted ground fault pickup
0.02 to 20.00
0.01
×
CT
F3
8 = 0.08
×
CT
21F3
Winding 1 restricted ground fault slope
0 to 100
1
%
F1
10%
21F4
Winding 1 restricted ground fault delay
0.00 to 600.00
0.01
s
F3
10 = 0.10 s
21F5
Winding 1 restricted ground fault block
---
---
---
F87
0 = Disabled
21F6
Winding 1 restricted ground fault relays
1 to 8
---
---
F153
None
21F7
Reserved
↓
↓
↓
↓
↓
↓
↓
21FF
Reserved
Winding 2 restricted ground fault
2200
Winding 2 restricted ground fault function
---
---
---
F30
0 = Disabled
2201
Winding 2 restricted ground fault target
---
---
---
F46
1 = Latched
2202
Winding 2 restricted ground fault pickup
0.02 to 20.00
0.01
×
CT
F3
8 = 0.08
×
CT
2203
Winding 2 restricted ground fault slope
0 to 100
1
%
F1
10%
2204
Winding 2 restricted ground fault delay
0.00 to 600.00
0.01
s
F3
10 = 0.10 s
2205
Winding 2 restricted ground fault block
---
---
---
F87
0 = Disabled
2206
Winding 2 restricted ground fault relays
1 to 8
---
---
F153
None
2207
Reserved
↓
↓
↓
↓
↓
↓
↓
220F
Reserved
Winding 3 restricted ground fault
2210
Winding 3 restricted ground fault function
---
---
---
F30
0 = Disabled
2211
Winding 3 restricted ground fault target
---
---
---
F46
1 = Latched
Table 2–4: 745 memory map (Sheet 47 of 56)
Addr
Description
Range
Step
Units
Format
Default