GE 469

110 469 MOTOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE
MODBUS MEMORY MAP COMMUNICATIONS GUIDE
F14
32 bits
2’s COMPLEMENT SIGNED LONG
VALUE, 2 DECIMAL 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: FFFE hex, 2nd word: 1DC0 hex)
F15
16 bits HARDWARE REVISION
0000 0000
0000 0001
1 = A
0000 0000
0000 0010
2 = B
... ...
0000 0000
0001 1010
26 = Z
F16
16 bits SOFTWARE REVISION
1111 1111
xxxx xxxx
Major Revision Number
0 to 9 in steps of 1
xxxx xxxx
1111 1111
Minor Revision Number (two BCD
digits)
00 to 99 in steps of 1
Example: Revision 2.30 stored as 0230 hex
F17
32 bits
UNSIGNED LONG VALUE, 3 DECIMAL
PLACES
1st 16 bits High Order Word of Long Value
2nd 16 bits Low Order Word of Long Value
Example: 123.456 stored as 123456
(i.e. 1st word: 0001 hex, 2nd word: E240 hex)
F18
32 bits DATE (MM/DD/YYYY)
1st byte Month (1 to 12)
2nd byte Day (1 to 31)
3rd & 4th byte Year (1995 to 2094)
Example: Feb. 20, 1995 stored as 34867142 (i.e. 1st
word: 0214, 2nd word 07CB)
F19
32 bits TIME (HH:MM:SS:hh)
1st byte Hours (0 to 23)
2nd byte Minutes (0 to 59)
3rd byte Seconds (0 to 59)
4th byte Hundredths of seconds (0 to 99)
Example: 2:05pm stored as 235208704 (i.e. 1st word:
0E05, 2nd word 0000)
F20
32 bits
2’s COMPLEMENT SIGNED LONG
VALUE
1st 16 bits High Order Word of Long Value
2nd 16 bits Low Order Word of Long Value
Note: -1 means “Never”
F21
16 bits
2’s COMPLEMENT SIGNED VALUE
2 DECIMAL PLACES (Power Factor)
< 0 Leading Power Factor - Negative
> 0 Lagging Power Factor - Positive
Example: Power Factor of 0.87 lag is used as 87 (i.e.
0057)
Table 8: Data Formats (Sheet 2 of 15)
CODE TYPE DEFINITION