PAS - Getting Started: RS 485, Modbus RTU communication 'Troubleshooting' COM Ports - SATEC metering

Learn how to troubleshoot RS-485 Modbus RTU communications and COM port issues in PAS for SATEC meters.

This video guides you through diagnosing common connection problems, verifying COM ports in Windows Device Manager, and ensuring PAS can connect to your SATEC meter.

PAS provides simple, reliable tools for communication setup and troubleshooting, helping you get your system online quickly and avoid configuration errors.

What You’ll Learn:

1. How to verify COM port configuration in PAS
2. Using Device Manager to check if your RS-485 to USB converter is detected
3. Identifying and resolving “Cannot open serial port” errors
4. Why PAS needs to be restarted after plugging in a new USB COM device
5. Confirming matching baud rate settings across PAS, Windows, and your meter

Mandatory Requirement: plug in your converter before opening PAS

Chapters:

00:00 – Intro
00:06 – Verifying Site Configuration & COM Port settings
00:32 – Switching between online/offline and testing communications
00:39 – Observing timeout errors (“Cannot open serial port”)
00:45 – Checking COM ports in Device Manager
00:52 – Plugging in RS-485 to USB converter & detecting COM9
01:08 – Restarting PAS to refresh COM port selection
01:19 – Applying configuration & going online
01:35 – Successful communication verification
01:46 – Best practice tips for avoiding future issues
02:12 – End of video


#SATEC #ModbusRTU #RS485 #Troubleshooting #EnergyMetering #poweranalyser