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APPENDIX A - Version Specific Software Documentation Teledyne API - Models T100, 100E Series (05036E DCN5834)
A-38 05036 Rev D
MODBUS
Register Address
(dec., 0-based)
Description Units
110
12
SO
2
concentration for range #1, with O
2
correction PPB
112
12
SO
2
concentration for range #2, with O
2
correction PPB
200
11
CO
2
concentration %
202
11
CO
2
concentration during zero/span calibration, just before
computing new slope and offset
%
204
11
CO
2
slope —
206
11
CO
2
offset %
MODBUS Floating Point Holding Registers
(32-bit IEEE 754 format; read/write in high-word, low-word order; read/write)
0 Maps to SO2_SPAN1 variable; target conc. for range #1 Conc. units
2 Maps to SO2_SPAN2 variable; target conc. for range #2 Conc. units
100
10
Maps to O2_TARG_SPAN_CONC variable %
200
11
Maps to CO2_TARG_SPAN_CONC variable %
MODBUS Discrete Input Registers
(single-bit; read-only)
0 PMT detector warning
1 UV detector warning
2 Dark calibration warning
3 Box temperature warning
4 PMT temperature warning
5 Reaction cell temperature warning
6 Sample pressure warning
7 HVPS warning
8 System reset warning
9 Rear board communication warning
10 Relay board communication warning
11 Front panel communication warning
12 Analog calibration warning
13 Dynamic zero warning
14 Dynamic span warning
15 Invalid concentration
16 In zero calibration mode
17 In span calibration mode
18 In multi-point calibration mode
19 System is OK (same meaning as SYSTEM_OK I/O signal)
20 Sample flow warning
21
1
IZS temperature warning
22
2
In low span calibration mode
23
2
Vacuum pressure warning
24
3
SO
2
concentration alarm limit #1 exceeded
04515F DCN6048