43 Appendix B: Modbus Registers
Holding Registers
Measurement setting registers
bit 0: Dewpoint
bit 1: Sample Temperature
bit 2: Sample Pressure
bit 3: Enclosure Temperature
bit 4: User Input 1
bit 5: User Input 2
bit 6: User Input 3
bit 7: User input 4
bits 8-31: Unused
Dewpoint engineering unit
0=°C
1=°F
2=ppmV
3=lbs H
2
O/mm scf
4=g/m
3
Valid values are -100 - 99999.9
Valid values are -100 - 99999.9
Valid values are -100 - 99999.9
Valid values are -100 - 99999.9
Sample temperature engineering unit
Sample temperature low limit
Valid values are -100 - 100
Sample temperature high limit
Valid values are -100 - 100
Sample temperature low alarm
Valid values are -100 - 100
Sample temperature high alarm
Valid values are -100 - 100
Sample pressure engineering unit
Sample pressure low limit
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