
User's Guide _______________________________________________________________________
70 ___________________________________________________________________ M210934EN-D
APPENDIX A
MODBUS REFERENCE
This appendix describes the Modbus protocol implementation of the
MMT162 transmitter.
Default Communication Settings
Table 12 below shows the default communication settings when Modbus
is enabled at the factory. For information on how to configure the
communication settings using serial line commands, see Table 10 on
page 45.
Table 12 Default Communication Settings
NOTE
You can also change device address with Modbus itself (register 1537).
Supported Modbus Functions
Table 13 Supported Function Codes
Code
(hexadecimal)
(as defined by the specification)
See Table 14 on page 71
for available registers.
See Table 14 on page 71
for available registers.
Read Device Identification
for available device
NOTE
After power-up, wait for five seconds before sending Modbus requests.
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