Schweitzer Engineering Laboratories SEL-587Z - Page 258

D.30
SEL-587Z Instruction Manual Date Code 20020903
Modbus RTU Communications Protocol
Modbus Map
NOTE 1. Reserved addresses return 8000h.
NOTE 2. Registers (RW) are read/write registers.
Registers (W) are write-only registers.
Registers (R) are read-only registers.
All other registers are read only.
NOTE 3. Event Types
Communication Counter
0140 Number of
messages received
0 65535 1 1
0141 Number of
messages sent
to other devices
0 65535 1 1
0142 Invalid address 0 65535 1 1
0143 Bad CRC 0 65535 1 1
0144 UART error 0 65535 1 1
0145 Illegal function
code/Op code
0 65535 1 1
0146 Illegal register 0 65535 1 1
0147 Illegal write 0 65535 1 1
0148 Bad packet format 0 65535 1 1
0149 Bad packet length 0 65535 1 1
014A Reserved
014B Reserved
014C Reserved
014D–1FFA Reserved
1FFB Device tag # 15047 ––––
1FFC Feature set ID 0
1FFD–FFFF Reserved
a
Two 8-bit ASCII characters per register.
b
16-bit unsigned value.
c
16-bit signed value.
ASCII CODE
TRIP1 93
TRIP2 94
TRIP3 95
ERI 71
ER2 72
PULSE 92
TRIG 15
Table D.18 Modbus Map (Sheet 15 of 15)
Address
(Hex)
Field Units
Range
Scale
Factor
Low High
Step