Unitronics’s BACnet Gateway User Guide
Page 23 of 28
Unitronics
Appendix A.
Troubleshooting
Check Wiring and Settings
Appendix A.1.
If Tx/Rx are not flashing rapidly then there is a COM issue on the Modbus side and you need to check the
following things:
o
Visual observations of LEDs on GW-BAC1. (
o
Check baud rate, parity, data bits, stop bits
o
Check Modbus device address
o
Verify wiring
Field COM problems:
o
Visual observations of LEDs on GW-BAC1. (
o
Visual dipswitch settings (using correct baud rate and device instance)
o
Verify IP address setting
o
Verify wiring
If the problem still exists, a Diagnostic Capture needs to be taken and sent to Unitronics technical support.