Memory Map Data Formats - GE 750 Instruction Manual

16.4 MODBUS MEMORY MAP
Table 16–16: MODBUS MEMORY MAP DATA FORMATS (Sheet 1 of 24)
TYPE VALUE / BIT
MASK
F1
F2
F3
F4
F5
F6
F7
F8
16
F9
F10
F11
F12
1 2 3 4 5 6 7 8 9
For explanation of Table footnotes, see page 16–83.
16-
60
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DESCRIPTION
UNSIGNED VALUE
Example: 1234 stored as 1234
UNSIGNED VALUE, 1 DECIMAL PLACE
Example: 123.4 stored as 1234
UNSIGNED VALUE, 2 DECIMAL PLACES
Example: 12.34 stored as 1234
2's COMPLEMENT SIGNED VALUE
Example: -1234 stored as -1234
2's COMPLEMENT SIGNED VALUE, 1 DECIMAL PLACE
Example: -123.4 stored as -1234
2's COMPLEMENT SIGNED VALUE, 2 DECIMAL PLACES
Example: -12.34 stored as -1234
UNSIGNED LONG VALUE (32 bits)
High order word of long value stored in 1st 16 bits
Low order word of long value stored in 2nd 16 bits
Example: 123456 stored as 123456
UNSIGNED LONG VALUE, 1 DECIMAL PLACE (32 bits)
High order word of long value stored in 1st 16 bits
Low order word of long value stored in 2nd 16 bits
Example: 12345.6 stored as 123456
UNSIGNED LONG VALUE, 2 DECIMAL PLACES (32 bits)
High order word of long value stored in 1st 16 bits
Low order word of long value stored in 2nd 16 bits
Example: 1234.56 stored as 123456
2's COMPLEMENT SIGNED LONG VALUE (32 bits)
High order word of long value stored in 1st 16 bits
Low order word of long value stored in 2nd 16 bits
Example: -123456 stored as -123456
2's COMPLEMENT SIGNED LONG VALUE, 1 DECIMAL PLACE (32 bits)
High order word of long value stored in 1st 16 bits
Low order word of long value stored in 2nd 16 bits
Example: -12345.6 stored as -123456
2's COMPLEMENT SIGNED LONG VALUE, 2 DECIMAL PLACES (32 bits)
High order word of long value stored in 1st 16 bits
Low order word of long value stored in 2nd 16 bits
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16 COMMUNICATIONS

16.4.3 MEMORY MAP DATA FORMATS

GE Power Management