User Manual

Modbus/SDI-12 Gateway User Manual Page 9 of 12
Last Updated: August 20, 2013
Appendices
This information is provided for advanced users only, and allows for configuration of units
without using the provided Windows software. Typical users do not need this information.
Appendix A - SDI-12 Configuration Register Map
The following register is valid for firmw3are version 5400-362-03 for the SDI-12/Modbus
Translator hardware. All configuration data is accessed via Modbus functions 3, 6, and 16 (holding
registers). The unit will respond to commands for any Modbus address for this range of registers.
Modbus Registers
Item Name
Register #
Length
Reserved
10000
3000
Configuration Name
13000
40
Last Modified
13040
4
Modbus Direction
13044
1
Modbus Address
13045
1
Modbus Baud Rate
13046
1
SDI Power
13047
1
Poll Interval
13048
1
Power Up Delay
13049
1
Number of Commands
13050
1
Auto sequence Option (internal use)
13051
1
Reserved
13052
8
Firmware Version Number
13060
1
Firmware Revision Number
13061
1
Reserved
13062
37
Configuration Set (internal use, write 1 to implement newly written
configuration)
13099
1
Command 1 Sensor Address
13100
1
Command 1 Sensor Poll Interval
13101
1
Command 1 First Input or Holding Register; actual register
(protocol address) is one less than this number
13102
1
Command 1
13103
1
Command 1 First Value
13104
1
Command 1 # of Values
13105
1
Command 1 CRC Option
13106
1
Command 1 Data Format
13107
1
Command 1 Word Order
13108
1