TELEDYNE API T703U - Page 232

APPENDIX A-6: MODBUS Registers Teledyne API - Models T703, T703U, 703E MENU TREES (05745F DCN7107)
A-18
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
N/A
-
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
N/A
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
07223D DCN7107