Electro Industries/GaugeTech ProtoCom, Installation & Operation Manual, Page: 58 / 118

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E204701 3 - 2
3: Troubleshooting
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3.1.1: No Communication on Modbus RTU (Meter) Side
If the TX/RX LEDs are not flashing rapidly, there is a communication problem on the
Modbus (Meter) side. Check the following items:
• The action of the ProtoCom/ProtoCom-Lon LEDs - see the table on the previous
page.
• The baud rate, parity, data bits, and stop bits are set correctly
• The Modbus device address is correct
• The wiring is correct - see chapters 1 and 2.
• All of the Modbus RTU devices were discovered in the Web Configurator (see
2.10.1: Use the Web Configurator to Configure IP Address for BACnet IP and Ether-
Net/IP, on page 2-17
).
3.1.2: Field Communication Problems
To diagnose field communication problems, check the following items:
• The action of the ProtoCom/ProtoCom-Lon LEDs - see the table on the previous
page.
• The DIP switch settings for baud rate and device instance are correct - see
2.4: Step Four - Set MAC Address/Device Instance/Node-ID (Proto- Com only)/IP
Address, on page 2-5
and 2.5 : Step 5: Set the Baud Rate for BACnet MS/TP and
DF1 Protocols, on page 2-9 .
• The IP address setting is correct.
• The wiring is correct - see chapters 1 and 2.