Troubleshooting

Red LED is flashing, the unit can not be accessed via LAN

Cause

  • IP conflict.

  • Incorrect DHCP server.

Solution

  • The CMe3100 is configured with static IP or dynamic IP (dynamic IP is set as default).

    • If static IP assignment is used, make sure that there are no IP conflicts.

    • If dynamic IP assignment is used, check that the CMe3100 is connected to a network with a correctly working DHCP server.

Red LED is permanently on

Cause

  • Error on the M-Bus 2-wire bus.

Solution

  • Verify no short-circuit of the M-Bus bus. The voltage should be between 24-30 VDC.

All LEDs are permanently off

Cause

  • The product is not powered up.

Solution

  • Verify that the product is powered up.

  • If the product is in the first stage of the start-up process, wait approximately 20 s.

Connection to CMe3100 is not working

Cause

  • The wrong USB cable or USB port is used for connection

  • The CMe3100 driver's software is an old version.

  • The CMe3100 has not been properly installed, recognized or allowed by the computer.

Solution

  • Verify that the correct USB cable and port are used.

  • Verify that the latest firmware version is installed on the CMe3100 and that the device has been rebooted afterwards. If the device uses firmware version 1.9.2, it will not be able to connect through USB and will need to be returned to Elvaco for replacement.

    Download the latest setup file at Download setup file for CMe3100.

  • Verify that there is no network cable connected between the device and computer.

  • Verify that CMe3100 appears as a USB device on the computer, if not, try a different comport and/or reboot the device.

  • Verify that Elvaco Serial Port is visible in the device manager, under comports.

When you have verified all above, perform the following steps.

  1. Start the device with the Configure CMe3100 shortcut located on your desktop.

  2. Use the reserved IP address; 169.254.254.1, and try to connect your device.

    Note

    Older versions of CMe3100 use the IP address 192.168.100.1.

  3. If the connection continous to fail, try a factory reset. A factory reset is performed by powering of the CMe3100. Press the button located over the M-Bus Master Connection until the green and red LED flashes. Wait a couple of minutes, reconnect the USB cable and then try to connect using the CMe3100 Configure shortcut.

  4. If the device still cannot connect, unplug the network and USB cables and disconnect from all networks your computer is connected to. Reconnect the USB cable and try to connect to the CMe3100 either through the shortcut or the IP 169.254.254.1.

If it still does not work, the computer or/and CMe3100 need to be replaced.

Error when connecting to NTP server

The installation or time synchronization fails with error message:

  • ERROR:Error connecting to NTP server. Flags not supported

  • ERROR:Error connecting to NTP server. Profile could not be activated

  • ERROR:Error connecting to NTP server. Timeout waiting for NTP packet

Cause

  • No working GPRS connection.

  • Wrong APN is set.

Solution

  • Verify that the GPRS connection is working and that the correct APN is set. Do this by sending a Status sms to your device. The response will partly contain information about the status for GPRS and APN.

  • Try a different NTP server.

    For suggested NTP servers, see www.pool.ntp.org/zone/@.

Note

Time synchronization can be disabled and it is possible to perform the installation without setting the clock.

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