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Models T801, 801E Software Menus (Reference: 06843C DCN6418) Appendix A
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MODBUS Register
Address
(dec., 0-based)
Description Units
MODBUS Discrete Input Registers
(single-bit; read-only)
0 Box temperature warning
1
4
O
2
cell temperature warning
2 Sample flow warning
3 Sample pressure warning
4 System reset warning
5 Rear board communication warning
6 Relay board communication warning
7 Front panel communication warning
8 Analog calibration warning
9 Dynamic zero warning
10 Dynamic span warning
11 Invalid concentration
12
4
In O
2
zero calibration mode
13
4
In O
2
span calibration mode
14
4
In O
2
multi-point calibration mode
15 System is OK (same meaning as SYSTEM_OK I/O signal)
16 O
2
concentration alarm limit #1 exceeded
17 O
2
concentration alarm limit #2 exceeded
18 In Hessen manual mode
100
1
CO
2
cell temperature warning
101
1
In CO
2
zero calibration mode
102
1
In CO
2
span calibration mode
103
1
In CO
2
multi-point calibration mode
104
1
CO
2
concentration alarm limit #1 exceeded
105
1
CO
2
concentration alarm limit #2 exceeded
07274B DCN6418