CHAPTER 2: RS485 INTERFACE (MODBUS RTU)
FORMAT CODES
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE
2–41
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 and 4th byte
Year 2000 to 2099
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
Hundredths of seconds 0 to 99
2nd byte
Seconds 0 to 59
3rd byte
Minutes 0 to 59
4th byte
Hours 0 to 23
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
F22
16 bits
TWO 8-BIT CHARACTERS PACKED INTO 16-BIT
UNSIGNED
MSB
First Character
LSB
Second Character
Example: String ‘AB’ stored as 4142 hex
F25
16 bits
TRACE MEMORY CHANNEL DATA
0
Leading
1
Lagging
F26
16 bits
TRACE MEMORY CHANNEL DATA
0
Va
1
Vb
2
Vc
3
Va2
4
Vb2
5
Vc2
6
Ia
7
Ib
8
Ic
9
Ig
10
Inputs 1 to 16
11
Outputs 1 to 16
F74
16 bits
DATA LOGGER SAMPLE RATE
0
1 cycle
Code
Type
Definition
