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Teledyne API - Models T703, T703U, 703E MENU TREES (05745E DCN6572) APPENDIX A-6: MODBUS Registers
A-25
APPENDIX A-6: MODBUS Registers
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 Output flow rate LPM
2 Photometer measured ozone concentration PPB
4 Ozone generator reference detector reading mV
6 Ozone generator lamp drive mV
8 Ozone generator lamp temperature °C
10 Regulator pressure PSIG
12 Internal box temperature °C
14 Photometer detector measure reading mV
16 Photometer detector reference reading mV
18 Photometer sample flow rate LPM
20 Photometer lamp temperature °C
22 Photometer sample pressure Inches Hg
24 Photometer sample temperature °C
26 Photometer slope computed during zero/span bench calibration —
28 Photometer offset computed during zero/span bench calibration PPB
30 Ground reference mV
32 Precision 4.096 mV reference mV
MODBUS Discrete Input Registers
(single-bit; read-only)
0 System reset warning
1 Box temperature warning
2 Photometer lamp temperature warning
3 O
3
generator lamp temperature warning
4 Photometer reference warning
5 Photometer lamp stability warning
6 O
3
generator reference detector warning
7 Rear board communication warning
8 Relay board communication warning
9 O
3
generator or photometer lamp I
2
C driver chip communication warning
10 Front panel communication warning
11 Analog calibration warning
12 System is OK (same meaning as SYSTEM_OK I/O signal)
13 O
3
generator not yet stabilized
14 Calibration is active
15 Sequence is active
16 Regulator pressure warning
1
07223C DCN6572