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Teledyne API T/E-Series Models 101, 102, and 108 Software Documentation (PN05492D DCN6485)
A-34
APPENDIX A-7: MODBUS Register Map
MODBUS Register
Address
(dec., 0-based)
Description Units
MODBUS Floating Point Input Registers
(32-bit IEEE 754 format; read in high-word, low-word order; read-only)
0 PMT detector reading mV
2 UV lamp intensity reading mV
4 UV lamp ratio of calibrated intensity %
6 PMT electrical offset mV
8 UV lamp electrical offset mV
10 SO
2
slope for range #1 PPB/mV
12 SO
2
slope for range #2 PPB/mV
14 H
2
S/TRS slope for range #1 PPB/mV
16 H
2
S/TRS slope for range #2 PPB/mV
18 SO
2
offset for range #1 mV
20 SO
2
offset for range #2 mV
22 H
2
S/TRS offset for range #1 mV
24 H
2
S/TRS offset for range #2 mV
26 SO
2
concentration for range #1 during zero/span
calibration, just before computing new slope and offset
PPB
28 SO
2
concentration for range #2 during zero/span
calibration, just before computing new slope and offset
PPB
30 H
2
S/TRS concentration for range #1 during zero/span
calibration, just before computing new slope and offset
PPB
32 H
2
S/TRS concentration for range #2 during zero/span
calibration, just before computing new slope and offset
PPB
34 SO
2
concentration for range #1 PPB
36 SO
2
concentration for range #2 PPB
38 H
2
S/TRS concentration for range #1 PPB
40 H
2
S/TRS concentration for range #2 PPB
42 Concentration stability #1 PPB
44 Stray light reading PPB
46 Reaction cell temperature C
48 IZS temperature C
50 PMT temperature C
52 Converter efficiency factor for range #1 —
54 Converter efficiency factor for range #2 —
56 Sample flow rate cc/m
07266B DCN6485