Appendix A - Modbus Tables; Digital Inputs; Sensor Reading Diagnostics; Transmitter Function Diagnostics - ABB Endura AZ40 Operating Instructions Manual

Appendix A – MODBUS tables
A.1 Digital inputs
A.1.1 Sensor reading diagnostics
MODBUS coil Description
0 Oxygen concentration value status
1 COe concentration value status
2 Inlet temperature value status
3 Outlet temperature value status
4 Outlet / Inlet temperature value status
5 Efficiency value status
A.1.2 Transmitter function diagnostics
MODBUS coil Description
6 Transmitter failure diagnostic
7 Transmitter out of specification diagnostic
8 Transmitter maintenance diagnostic
9 Transmitter function check diagnostic
10 Sensor failure diagnostic
11 Sensor out of specification diagnostic
12 Sensor maintenance diagnostic
13 Sensor function check diagnostic
14 Active failure alarm
15 Calibration in progress
16 Blowback in progress
17 Zero gas valve check
18 Span gas valve check
19 Test gas valve check mode
20 Sample flow rate test mode
A.1.3 Transmitter and sensor diagnostic failure alarms
MODBUS Description
coil
21 ADC Failed
22 Sensor electronics cold junction failed
23 Oxygen heater failed
24 Flange block thermocouple failed
25 COe block thermocouple failed
26 Inlet thermocouple failed
27 Outlet thermocouple failed
28 Sensor non-volatile memory failed
29 Processor board non-volatile memory failed
30 Main board non-volatile memory failed
31 Reserved
32 Reserved
33 Comms board non-volatile memory failed
34 S/W key 1 non-volatile memory failed
35 Reserved
36 Reserved
37 Internal communication failure between
transmitter and sensor
38 Over temperature trip
10 COM/AZ40/MOD–EN Rev. A | Endura AZ40 | Oxygen and carbon monoxide equivalent (COe) analyzer
A.1.4 Transmitter and sensor diagnostic function alarms
MODBUS Description
coil
39 Flange, COe and oxygen heaters warming up
40 Flange, COe and oxygen heaters stabilizing
41 Calibrating
42 Blowback in progress
43 Sample flow rate test in progress
44 Manual valve test in progress
45 Remote zero gas test in progress
46 Remote span gas test in progress
47 Recovery stage after calibration / blowback /
manual valve test / flow rate test
48 In hold mode
49 In simulation mode
A.1.5 Transmitter and sensor diagnostic
out of specification alarms
MODBUS Description
coil
50 Last sensor calibration failed
51 Process value out of range
52 Temperature value out of range
53 Flange block temperature is high
54 Flange block temperature is low
55 COe block temperature is high
56 COe block temperature is low
57 Oxygen heater current is high
58 Oxygen heater current is low
Diagnostic
alarm no.
A.1.6 Transmitter and sensor diagnostic maintenance alarms
0
MODBUS Description
1
coil
2
59 Transmitter internal ambient temperature is high 38
3
60 Transmitter internal ambient temperature is low
4
61 Sensor CJC temperature is high
5
62 Sensor CJC temperature is low
6
63 Sensor ECJC temperature is high
7
64 Sensor ECJC temperature is low
8
65 Sensor power is turned off via SW1
9
66 Sensor mains selection is in the wrong position
10
11
12
13
14
15
16
17
Diagnostic
alarm no.
18
19
20
21
22
23
24
25
26
27
28
Diagnostic
alarm no.
29
30
31
32
33
34
35
36
37
Diagnostic
alarm no.
39
40
41
42
43
44
45