GE Multilin 745 Communications Manual page 99

CHAPTER 2: MODBUS PROTOCOL
745 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
F93: Two's-complement, signed value, auto-ranging based on winding 1 phase CT
primary (16 bits)
Winding 1 phase CT Is W1 Rated Load
primary ["W1"] a Low MVA
Transformer?
≤
W1 2A
≤
2A<W1 20A
≤
20A<W1 200A
>
W1 200A
≤
W1 2A
≤
2A<W1 20A
≤
20A<W1 200A
>
W1 200A
F94: Two's-complement, signed value, auto-ranging based on winding 2 phase CT
primary (16 bits)
Winding 2 phase CT Is W2 Rated Load
primary ["W2"] a Low MVA
Transformer?
≤
W2 2A
≤
2A<W2 20A
≤
20A<W2 200A
>
W2 200A
≤
W2 2A
≤
2A<W2 20A
≤
20A<W2 200A
>
W2 200A
F95: Two's-complement, signed value, auto-ranging based on winding 3 phase CT
primary (16 bits)
Winding 3 phase CT Is W3 Rated Load
primary ["W3"] a Low MVA
Transformer?
≤
W3 2A
≤
2A<W3 20A
≤
20A<W3 200A
>
W3 200A
≤
W3 2A
≤
2A<W3 20A
≤
20A<W3 200A
>
W3 200A
Signed Value stored
with:
No 3 decimal places
No 2 decimal places
No 1 decimal place
No Standard signed value
Yes 5 decimal places
Yes 4 decimal places
Yes 3 decimal place
Yes 2 decimal place
Signed Value stored
with:
No 3 decimal places
No 2 decimal places
No 1 decimal place
No Standard signed value
Yes 5 decimal places
Yes 4 decimal places
Yes 3 decimal place
Yes 2 decimal place
Signed Value stored
with:
No 3 decimal places
No 2 decimal places
No 1 decimal place
No Standard signed value
Yes 5 decimal places
Yes 4 decimal places
Yes 3 decimal place
Yes 2 decimal place
MODBUS PROTOCOL
Example
1.234 stored as 1234
12.34 stored as 1234
123.4 stored as 1234
1234 stored as 1234
0.01234 stored as 1234
0.1234 stored as 1234
1.234 stored as 1234
12.34 stored as 1234
Example
1.234 stored as 1234
12.34 stored as 1234
123.4 stored as 1234
1234 stored as 1234
0.01234 stored as 1234
0.1234 stored as 1234
1.234 stored as 1234
12.34 stored as 1234
Example
1.234 stored as 1234
12.34 stored as 1234
123.4 stored as 1234
1234 stored as 1234
0.01234 stored as 1234
0.1234 stored as 1234
1.234 stored as 1234
12.34 stored as 1234
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