Appendix B _________________________________________________________ Modbus Reference
VAISALA ________________________________________________________________________ 97
APPENDIX B
MODBUS REFERENCE
This appendix describes the Modbus protocol implementation of the
GMW90 series digital transmitters.
NOTE
For more information on Modbus protocol, refer to the
Specification and
Implementation Guide for Modbus Over Serial Line
.
NOTE
Serial line settings such as baud rate are configured using DIP switches.
See section
Configuration of Digital Output Models on page 21.
Table 43 Modbus Functions Supported by GMW90
Read Device Identification
Table 44 GMW90 Modbus Measurement Data Registers
Values read from the integer registers must be multiplied with the
provided multiplier to get the actual value. All integer values are signed.
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