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MODBUS Protocol
MODBUS Parameters Supported
C-10
Model 42i Instruction Manual
Coil Number
Status
37
PURGE MODE
38
NOT USED
39
ZERO CHECK/CAL ALARM
40
SPAN CHECK/CAL ALARM
41
O2 SENSOR ALARM
42
NOT USED
43
NOT USED
44
NOT USED
45
NOT USED
46
NOT USED
47
NOT USED
48
NOT USED
49
NOT USED
50
NOT USED
51
NOT USED
52
NOT USED
53
NOT USED
54
NOT USED
55
NOT USED
56
NOT USED
57
NOT USED
58
NOT USED
59
NOT USED
60
EXT ALARM 1
61
EXT ALARM 2
62
EXT ALARM 3
In addition to the coils listed in the Read Coils table, coils in the Write
Coils table can also be read.
IMPORTANT NOTE The addresses in the following tables are Protocol
Data Unit (PDU) addresses. Verify the register number on your
MODBUS master to ensure that it matches the register number on the
instrument.
▲
Zero/Span Option
Zero/Span Option
Zero/Span Option
Internal O
Sensor Option
2
Thermo Fisher Scientific
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