LAARS’ ProtoNode Startup GuidePage 30 of 43Appendix A.2. Check Wiring and Settings• No COMS on Modbus RTU side. If Tx/Rx are not flashing rapidly then there is a COM issue onthe Modbus side and you need to check the following things:o Visual observations of LEDs on ProtoNode. (Appendix A.5)o Check baud rate, parity, data bits, stop bitso Check Modbus device addresso Verify wiringo Verify all the Modbus RTU devices that were discovered in FST Web Configurator.(Section 5)• Field COM problems:o Visual observations of LEDs on ProtoNode. (Appendix A.5)o Visual dipswitch settings (using correct baud rate and device instance)o Verify IP address settingo Verify wiringIf the problem still exists, a Diagnostic Capture needs to be taken and sent to Sierra MonitorCorporation. (Appendix A.3)Appendix A.3. Take Diagnostic Capture With the FieldServer Utilities• Once the Diagnostic Capture is complete, email it to support@sierramonitor.com. TheDiagnostic Capture will allow us to rapidly diagnose the problem.• Ensure that FieldServer Toolbox is Loaded on the PC that is currently being used, or downloadFieldServer-Toolbox.zip on the Sierra Monitor Corporation webpage, under Customer Care:Resource Center, Software Downloads:http://www.sierramonitor.com/customer-care/resource-center?filters=software-downloads• Extract the executable file and complete the installation.• Disable any wireless Ethernet adapters on the PC/Laptop• Disable firewall and virus protection software if possible• Connect a standard cat5 Ethernet cable between the PC and ProtoNodeEthernet PortFigure 25: Ethernet Port LocationLAARS Heating SystemsPage 30 of 4320 Industrial Way, Rochester, NH, USA 03867 • (800) 900-9276 • www.Laars.com