IMPORTANT: Once you have set up the serial port and made all of your address entries on the TCP Device
Map, you must go to the Config File page and click Save to retain your settings through the next power
cycle.
3.3 Error Indications
Errors on the TCP side with RTU as master will be indicated by Connection Status. The most common error
will be status code 5, which simply means unable to connect. A Connection Status of zero means no errors
detected. However, if the gateway has not received any requests from RTU, then it will not have
attempted to connect to TCP yet. Therefore, status is only meaningful if the RTU master is sending
requests to the gateway.
Errors on the RTU side with TCP as master will be indicated on the Diganostics page illustrated here. A
tabulation of errors detected by the gateway will be noted here.
3. Configuring Gateway as a Modbus RTU Master
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