ScreenMaster RVG200
Paperless recorder Appendix B – MODBUS TCP / MODBUS 485
OI/RVG200-EN 151
B.4 Operating mode MODBUS coils
Tables B.2 to B.11 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 = OK, 1 = Fail Read only: 0 = OK, 1 = Fail
Analog input MODBUS coil Analog input MODBUS coil
A1 0001 C1 0013
A2 0002 C2 0014
A3 0003 C3 0015
A4 0004 C4 0016
A5 0005 C5 0017
A6 0006 C6 0018
B1 0007 D1 0019
B2 0008 D2 0020
B3 0009 D3 0021
B4 0010 D4 0022
B5 0011 D5 0023
B6 0012 D6 0024
Table B.2 Analog input fail states
Active / Inactive
state
Acknowledge state
Active / Inactive
state
Acknowledge state
Read
access
0 = Inactive
1 = Active
0 = Acknowledged or
inactive
1 = Active and
unacknowledged
Read
access
0 = Inactive
1 = Active
0 = Acknowledged or
inactive
1 = Active and
unacknowledged
Write
access
None
0 = No effect
1 = Acknowledge
Write
access
None
0 = No effect
1 = Acknowledge
Alarm MODBUS coil MODBUS coil Alarm MODBUS coil MODBUS coil
1A 101 200 13A 149 249
1B 102 201 13B 150 250
1C 103 202 13C 151 251
1D 104 203 13D 152 252
2A 105 204 14A 153 253
2B 106 205 14B 154 254
2C 107 206 14C 155 255
2D 108 207 14D 156 256
3A 109 208 15A 157 257
3B 110 209 15B 158 258
3C 111 210 15C 159 259
3D 112 211 15D 160 260
Table B.3 Alarm states
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