SM500F
Field mountable paperless recorder
Appendix B – Modbus TCP/Modbus 485
150
IM/SM500F Rev. Z
B.4 Operating Mode Modbus Coils
Tables B.2 to B.10 detail the contents of each Modbus coil. Each coil is assigned a register that can have
one of two values: 0000 and 0001.
Read Only: 0 = Input OK, 1 = Input Failed
Analog Input
Modbus Coil
A1
0001
B1
0002
B2
0005
C1
0003
C2
0006
D1
0004
D2
0007
Table B.2 Analog Input Fail States