Fireye MB485ETH-CG, Installation And Operation Manual

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46 © 2020 Carrier
Appendix A.3 Checking Wiring and Settings
•
No COMS on Modbus RTU side. If the Tx/Rx LEDs are not flashing rapidly then there is a COM
issue. To fix this, check the following:
o Visual observations of LEDs on MB485ETH-CG ( Appendix A.4 )
o
Check baud rate, parity, data bits, stop bits
o
Check Detector ID matches the correct device
o Verify wiring
o Verify the device was listed under the Web Configurator Active Profiles ( Section 10.3 )
• No COMS on Modbus TCP/IP side. To fix, check the following:
o Visual observations of LEDs on the MB485ETH-CG (
Appendix A.4
)
o Check device address
o
Verify wiring
o Verify all the Modbus TCP/IP device(s) were listed in the Web Configurator ( Section 10.3 )
•
Field COM problems:
o
Visual observations of LEDs on the MB485ETH-CG ( Appendix A.4 )
o Verify IP Address setting
o Verify wiring
NOTE: If the problem still exists, a Diagnostic Capture needs to be taken and sent to technical
support. ( Appendix A.5 )