E.58
SEL-787 Relay Instruction Manual Date Code 20150130
Modbus RTU Communications
Modbus Register Map
Bit 2 = Explicit Fault
Bit 3 = I/O Fault
Bit 4 = I/O Idle
Bit 5–Bit 15 = Reserved
400AH not used
400BH (R) CONFIG PAR CKSUM 0 na
400CH (R) LANGUAGE CODE 0 na
0 = English
1 = French
2 = Spanish (Mexican)
3=Italian
4=German
5 = Japanese
6 = Portuguese
7 = Mandarin Chinese
8 = Russian
9=Dutch
400DH (R) FIRMWARE BUILD NUM 16400 16400 0 na
400EH not used
400FH (R) PRODUCT SUPPORT BITS na
Bit 0 = 2nd IO Card installed
Bits 1-15 = Reserved
4010H (R/W) SETTINGS TIMEOUT ms 500 65535 750 na
4011H–4013H Reserved
c
4014H (R) CONFIGURED BIT 0 na
Bit 0 = Unit Configured
Bits 1-15 = Reserved
4015H (R) Reserved
c
000na
4016H (R) ERROR REGISTER 0 65535 0 na
Bit 0 = Settings Read Error,
Bit 1 = Setting Write Error,
Bit 2 = Settings Update Error,
Bit 3 = Settings Resource Error,
Bit 4 = Settings Locked,
Bit 5 = Group Settings Error,
Bit 6 = Global Settings Error,
Bit 7 = Logic Settings Error
Bit 8 = Report Settings Error
Bit 9 = Front Panel Settings Error
Bit 10 = Memory Not Available,
Bit 11 = Settings Prep Error,
Bit 12 = Setting Changes Disabled,
Bit 13 = Memory Diag Error
Bit 14–Bit 15 = Reserved
4017H (R) Error Address 0 65535 0 na
4018H–401FH (R) Reserved
c
000na
a
All addresses in this table refer to the register addresses in the Modbus packet.
b
Registers labeled (R/(W) are read-write registers. Registers labeled (W) are write-only registers. Registers Labeled (R) are read-only
registers.
c
Reserved addresses return 0.
d
Read this register only when the PT connection is DELTA.
e
Read this register only when the PT connection is WYE.
f
The HI and LO registers are high and low 16-bits, respectively. They provide 32-bit information by combining to form a 32-bit register and
then applying sign and scaling attributes.
Table E.34 Modbus Register Map
a
(Sheet 36 of 36)
Modbus Register
Address
b
Name / Enums Units Min Max Def
Scale
Fac tor
DeviceNet
Parameter
Numbers
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