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Troubleshooting Ethernet Gateways
Troubleshooting Ethernet Gateways
This guide will take you through the different issues we have seen in the years arising around the installation of the Polar Gateways and some of the issues that might occur during the life of the gateway.
Check Power to the device
There are two lights on the Gateways Faceplate that must be illuminated to ensure there is power on the unit.
- POWER – is solid on means there is power on the Gateway
- WORK – Flashes when the Gateway is operating normally
If either of these lights are not on, please see below: - Ensure there is 12-36V DC across the + and – terminals on the top of the Gateway.
- Check the power supply providing power to the Gateway.
- If we have confirmed the Gateway is being fed the DC voltage but is not turning on the unit will have to be returned for inspection.
Check connectivity to the Polar Portal
Connectivity of the Gateway to the Polar Portal can be seen on the Gateway’s faceplate. The light that needs to be illuminated on the Gateway Faceplate is as follows:
- LINK light is solid on – This mean that the Gateway is connected to the Polar Portal
If this light is not on see below: - Check network connectivity
- Network connectivity to the Gateway needs to be made sure of.
- Is there internet on the LAN network?
- Is the LAN cable plugged in securely?
- Check the state of the LAN cable, is there damage to the line.
- Check that the cable is not run parallel to any high current or high-power lines.
- Wait 5min with the device powered on, sometimes it can take time to assign itself an IP and connect
- Restart the device and wait a further 5 minutes.
Gateway is Connected but no data is reading on the platform:
- Check Serial Parameters on the devices connected to the Gateway
- Slave ID matches the Polar Portal (generally Slave ID 1)
- If there are multiple devices connected to one Gateway, then we need to make sure each Slave ID is unique and the same as on the Polar Portal.
- Baud rate 9600
- Stop and parity bits – 8, no,1
- Device is set to communicate on Modbus RS-485 RTU
- Not Modbus Ascii or any other communication protocol.
- See User manual for device specific parameters to change as per device
- Check RS-485 Cabling, A to A and B to B. In case make sure RS-485 + to RS-485+ and RS-485- to RS-485-.
- Make certain of this for all RS-485 connections in the chain
- Make sure that common grounds are connected in the chain
- Make sure Shielding is earthed on 1 side only, and that the cables in the chain all share the same shielding.
- If data is still not showing after the above steps have been confirmed, we will then need to narrow down the cause of the issues. This will be done by disconnecting all RS-485 devices from the network and starting by connecting them back onto the Gateway one at a time. Once each device is detected we will then move onto the next. Until we find where the issue is.
Please feel free to contact Electro Mechanica if any issues arise in the steps above.
For more information on how to setup a gateway click the following link: