GE Multilin MM300, Communications Manual, Page: 45 / 146

CHAPTER 1: COMMUNICATIONS GUIDE RS485 INTERFACE (MODBUS RTU)
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE 41
Format codes
Code Type Definition
F1 16 bits UNSIGNED VALUE - Maximum Setpoint Value
represents OFF when marked "*" on the Modbus
Memory Map
Example: 1234 stored as 1234
F2
16 bits UNSIGNED VALUE, 1 DECIMAL PLACE - Maximum
Setpoint Value represents OFF when marked "*" on
the Modbus Memory Map
Example: 123.4 stored as 1234
F3
16 bits UNSIGNED VALUE, 2 DECIMAL PLACES - Maximum
Setpoint Value represents OFF when marked "*" on
the Modbus Memory Map
Example: 12.34 stored as 1234
F4
16 bits 2’s COMPLEMENT SIGNED VALUE - Maximum Setpoint
Value represents OFF when marked "*" on the Modbus
Memory Map
Example: -1234 stored as -1234 i.e. 64302
F6
16 bits 2’s COMPLEMENT SIGNED VALUE, 2 DECIMAL PLACES
Example: -12.34 stored as -1234 i.e. 64302
F9
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
F10
32 bits UNSIGNED LONG VALUE, 1 DECIMAL PLACE
1st 16 bits UNSIGNED LONG VALUE, 1 DECIMAL PLACE
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
F13
32 bits 2’s COMPLEMENT SIGNED LONG 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
F15
16 bits HARDWARE REVISION
0 Prototype
1 A
2 B
3 C
4 D
5 E
6 F
7 G
8 H
9 I
10 J
11 K
12 L