Format Codes; Data Formats - GE 469 Communications Manual

COMMUNICATIONS GUIDE

Format Codes

469 MOTOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE
The data formats used in the Modbus memory map are shown below.
CODE
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
Table 8: Data Formats (Sheet 1 of 15)
TYPE DEFINITION
16 bits UNSIGNED VALUE
Example: 1234 stored as 1234
UNSIGNED VALUE,
16 bits
1 DECIMAL PLACE
Example: 123.4 stored as 1234
UNSIGNED VALUE,
16 bits
2 DECIMAL PLACES
Example: 12.34 stored as 1234
16 bits 2's COMPLEMENT SIGNED VALUE
Example: –1234 stored as –1234 (i.e. 64302)
2's COMPLEMENT SIGNED VALUE
16 bits
1 DECIMAL PLACES
Example: -123.4 stored as -1234 (i.e. 64302)
2's COMPLEMENT SIGNED VALUE
16 bits
2 DECIMAL PLACES
Example: –12.34 stored as –1234 (i.e. 64302)
2's COMPLEMENT SIGNED VALUE
16 bits
3 DECIMAL PLACES
Example: –1.234 stored as –1234 (i.e. 64302)
2's COMPLEMENT SIGNED VALUE
16 bits
4 DECIMAL PLACES
Example: -0.1234 stored as -1234 (i.e. 64302)
32 bits UNSIGNED LONG VALUE
1st 16 bits High Order Word of Long Value
2nd 16 bits Low Order Word of Long Value
Example: 123456 stored as 123456
(i.e. 1st word: 0001 hex, 2nd word: E240 hex)
UNSIGNED LONG VALUE, 1 DECIMAL
32 bits
PLACE
1st 16 bits High Order Word of Long Value
2nd 16 bits Low Order Word of Long Value
Example: 12345.6 stored as 123456
(i.e. 1st word: 0001 hex, 2nd word: E240 hex)
UNSIGNED LONG VALUE, 2 DECIMAL
32 bits
PLACES
1st 16 bits High Order Word of Long Value
2nd 16 bits Low Order Word of Long Value
Example: 1234.56 stored as 123456
(i.e. 1st word: 0001 hex, 2nd word: E240 hex)
2's COMPLEMENT SIGNED LONG
32 bits
VALUE
1st 16 bits High Order Word of Long Value
2nd 16 bits Low Order Word of Long Value
Example: -123456 stored as -123456
(i.e. 1st word: FFFE hex, 2nd word: 1DC0 hex)
2's COMPLEMENT SIGNED LONG
32 bits
VALUE, 1 DECIMAL PLACE
1st 16 bits High Order Word of Long Value
2nd 16 bits Low Order Word of Long Value
Example: -12345.6 stored as -123456
(i.e. 1st word: FFFE hex, 2nd word: 1DC0 hex)
MODBUS MEMORY MAP
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