Teledyne T400 User Manual page 175

Teledyne API - Models T400 and 400E (04402G DCN6874)
MODBUS
Register Address
(dec., 0-based)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
3
25
3
26
0
1
2
3
1
20
2
21
1
22
1
23
2
24
1
25
1
Set DYN_ZERO or DYN_SPAN variables to ON to enable calculating new slope or offset. Otherwise a calibration check
is performed.
2
O generator or zero/span valve factory options must be enabled.
3
3
Concentration alarm option.
4
External analog input option.
083730400A DCN8130
Sample pressure warning
System reset warning
Rear board communication warning
Relay board communication warning
O generator or photometer lamp I
3
Front panel communication warning
Analog calibration warning
Dynamic zero warning
Dynamic span warning
Invalid concentration
In zero calibration mode
In low span calibration mode
In span calibration mode
In multi-point calibration mode
System is OK (same meaning as SYSTEM_OK I/O signal)
O concentration alarm limit #1 exceeded
3
O concentration alarm limit #2 exceeded
3
MODBUS Coil Registers
(single-bit; read/write)
Maps to relay output signal 36 (MB_RELAY_36 in signal I/O list)
Maps to relay output signal 37 (MB_RELAY_37 in signal I/O list)
Maps to relay output signal 38 (MB_RELAY_38 in signal I/O list)
Maps to relay output signal 39 (MB_RELAY_39 in signal I/O list)
Triggers zero calibration of O
Triggers low span calibration of O
Triggers span calibration of O
Triggers zero calibration of O
Triggers low span calibration of O
Triggers span calibration of O
Description
2
C driver chip communication warning
range #1 (on enters cal.; off exits cal.)
3
range #1 (on enters cal.; off exits cal.)
3
range #1 (on enters cal.; off exits cal.)
3
range #2 (on enters cal.; off exits cal.)
3
range #2 (on enters cal.; off exits cal.)
3
range #2 (on enters cal.; off exits cal.)
3
APPENDIX A-7: MODBUS Register Map
Units
A-3