Schweitzer Engineering Laboratories SEL-749M - Page 269

D.35
Date Code 20080918 Instruction Manual SEL-749M Relay
Modbus RTU Communications Protocol
Modbus Register Map
4008 (RW) DN BAUD RATE
0 = 125 kbps
1 = 250 kbps
2 = 500 kbps
3 = AUTO
03
4009 (RW) DN STATUS
Bit 0 = Explicit Cnxn
Bit 1 = I/O Cnxn
Bit 2 = Explicit Fault
Bit 3 = I/O Fault
Bit 4 = I/O Idle
Bit 5–15 = Reserved
031
400A not used
400B (R) CONFIG PAR CKSUM 0 65535
400C (R) LANGUAGE CODE
0 = English
1 = French
2 = Spanish (Mexican)
3 = Italian
4 = German
5 = Japanese
6 = Portuguese
7 = Mandarin Chinese
8 = Russian
9 = Dutch
400D (R) FIRMWARE BUILD NUM 16400 16400
400E not used
400F (R) Product Support Bits
Bit 0 = 2nd IO Card installed
Bits 1–15 = Reserved
01
4010 (RW) SETTINGS TIMEOUT ms 500 65535
4011–4013 Reserved
4014 (R) CONFIGURED BIT
Bit 0 = Unit Configured
Bits 1–15 = Reserved
01
4015 (R) Reserved 0 0
Table D.23 Modbus Register Map
a
(Sheet 25 of 26)
Address
b
(Hex) Name/Enums
c
Units
Range
Scale
Fa c tor
DeviceNet
Parameter
Number
Low High Step
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