Michell Instruments Easidew User Manual page 31

Easidew Transmitter User's Manual
Register Address
Dec Hex Access
0 0000 R/W
3 0003 R
4 0004 R/W
8 0008 R
10 000A R/W
11 000B R/W
15 000F R
16 0010 R
17 0011 R/W
18 0012 R/W
54 0036 R/W
Michell Instruments
Data Description
Type
uint16 Instrument Modbus Address
special Status/Fault Indication
bit0, Sensor short circuit
bit1, Sensor open circuit
bit2, Thermistor short circuit
bit3, Thermistor open circuit
bit4, Sensor over range
bit5, Sensor under range
bit6, Thermistor over range
bit7, Thermistor under range
special Output Configuration
Sensor fault output
bit0, 4mA
bit1, 20mA
bit2, 23mA
bit3, 3mA
Dew-point under-range
output
bit4, 4mA
bit5, 20mA
bit6, 23mA
bit7, 3mA
Dew-point over-range output
bit8, 4mA
bit9, 20mA
bit10, 23mA
bit11, 3mA
Output parameter
bit12, Temperature
bit13, ppmV
bit14, ppmW
bit15, Natural gas
special Transmitter Firmware Version 0x0100 = 1.0
int16 Measurement Range Low
int16 Measurement Range High
special Sensor Batch Number
special Sensor Serial Number
special Year of Calibration
special Month & Day of Calibration
int16 Pressure value for ppmV
(barg)
APPENDIX D
Comment
1-255
Only one bit can be set for
each parameter, for example
'sensor fault' can be EITHER
4mA OR 20mA OR 23mA OR
3mA.
If bits 13 – 16 are not set, then
the output will be dew point.
Natural gas parameter set in
register 78.
10x multiplier, i.e. -1000 =
-100.0
10x multiplier, i.e. 200 = 20.0
Batch 0xA123
Serial 0x0001
Complete sensor serial would
be A123-001
0x2018 = 2018
0x317 = March 17th
10x multiplier, i.e. 100 = 10.0
25