GE 745 TRANSFORMER MANAGEMENT RELAY

8-90 745 Transformer Management Relay GE Power Management
8.3 MODBUS MEMORY MAP 8 COMMUNICATIONS
8
For 20 A < CT PRIMARY
≤
200 A
Format: Signed value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY
≤
2000 A
Format: Signed value
Example: 1234 stored as 1234
For CT PRIMARY > 2000 A
Format: Signed value, scaled by 10
Example: 12340 stored as 1234
F95 16 bits SIGNED VALUE
AUTORANGING BASED ON
WINDING 3 PHASE CT PRIMARY
For CT PRIMARY
≤
2 A
Format: Signed value, 3 decimal places
Example: 1.234 stored as 1234
For 2 A < CT PRIMARY
≤
20 A
Format: Signed value, 2 decimal places
Example: 12.34 stored as 1234
For 20 A < CT PRIMARY
≤
200 A
Format: Signed value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY
≤
2000 A
Format: Signed value
Example: 1234 stored as 1234
For CT PRIMARY > 2000 A
Format: Signed value, scaled by 10
Example: 12340 stored as 1234
F96 32 bits UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 1 PHASE CT PRIMARY
For CT PRIMARY
≤
2 A
Format: Signed value, 3 decimal places
Example: 1.234 stored as 1234
For 2 A < CT PRIMARY
≤
20 A
Format: Signed value, 2 decimal places
Example: 12.34 stored as 1234
For 20 A < CT PRIMARY
≤
200 A
Format: Signed value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY
≤
2000 A
Format: Signed value
Example: 1234 stored as 1234
For CT PRIMARY > 2000 A
Format: Signed value, scaled by 10
Example: 12340 stored as 1234
F97 32 bits UNSIGNED VALUE
AUTORANGING BASED ON
WINDING 2 PHASE CT PRIMARY
For CT PRIMARY
≤
2 A
Format: Signed value, 3 decimal places
Example: 1.234 stored as 1234
Table 8–7: 745 DATA FORMATS (Sheet 33 of 35)
FORMAT
CODE
APPLICABLE BITS DEFINITION
For 2 A < CT PRIMARY
≤
20 A
Format: Signed value, 2 decimal places
Example: 12.34 stored as 1234
For 20 A < CT PRIMARY
≤
200 A
Format: Signed value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY
≤
2000 A
Format: Signed value
Example: 1234 stored as 1234
For CT PRIMARY > 2000 A
Format: Signed value, scaled by 10
Example: 12340 stored as 1234
F98 32 bits UNSIGNED VALUE, AUTORANGING
BASED ON WINDING 3 PHASE CT
PRIMARY
For CT PRIMARY
≤
2 A
Format: Signed value, 3 decimal places
Example: 1.234 stored as 1234
For 2 A < CT PRIMARY
≤
20 A
Format: Signed value, 2 decimal places
Example: 12.34 stored as 1234
For 20 A < CT PRIMARY
≤
200 A
Format: Signed value, 1 decimal place
Example: 123.4 stored as 1234
For 200 A < CT PRIMARY
≤
2000 A
Format: Signed value
Example: 1234 stored as 1234
For CT PRIMARY > 2000 A
Format: Signed value, scaled by 10
Example: 12340 stored as 1234
F99 16 bits Port used for DNP
0000 0000 0000 0000 0=None
0000 0000 0000 0001 1=Com 1
0000 0000 0000 0010 2=Com 2
0000 0000 0000 0011 3=Front
F100 16 bits Cooling Type For Dry Transformer
0000 0000 0000 0000 0=Sealed Self Cooled
0000 0000 0000 0001 1=Vented Self cooled
0000 0000 0000 0010 2=Forced-cooled
F101 16 bits Unsigned value, Autoranging Load
Loss at Rated Load
Low Volt. Winding rating
≥
5 KV
Unsigned Value, 0 Decimal Places
Example: 1234 stored as 1234
1 KV
≤
Low Volt. Winding rating < 5 KV
Unsigned Value, 1 Decimal Place
Example: 123.4 stored as 1234
Low Volt. Winding rating < 1 KV
Unsigned Value, 2 Decimal Places
Example: 12.34 stored as 1234)
Table 8–7: 745 DATA FORMATS (Sheet 34 of 35)
FORMAT
CODE
APPLICABLE BITS DEFINITION