M-Bus gateway failures
This page deals with the most common errors around the M-Bus gateway
Gateway does not find all meters
Many M-Bus meters get their power from the gateway. Our gateway supports 50 standard loads.
Start another search 1-2 times. It is possible that the meter does not always respond to the first search.
Check that the sum of the loads does not exceed 50.
If the lines are too long or the meters are too thin, the lines will become shorted.
Not every M-Bus meter is compatible with our gateway. The list of compatible meters can be found on the M-Bus Gateway product page.
Gateway finds more meters than have been installed
Mostly during commissioning: Depending on the M-Bus meter, it can create several sub-counters. These can be recognised by the serial number being shifted one place to the left, followed by an increasing number. Starting with 1. ex: Main counter 00200001, Sub-counter 02000011
Mostly during operation: An unstable connection can lead to faulty transmission of the serial number.
These counters can be deactivated to prevent them from obtaining a licence.
M-Bus meter is offline
Meters fail irregularly, they are not always the same meters.
The meters need about 10 seconds to respond. If the readout interval is set too low, they have no possibility to do so.
Solution: The readout interval can be increased on the M-Bus gateway. Recommended is 10 seconds per device.
Meters always lose the connection at the same time of day (hour and minute).
In this case, it may be that meters are battery-supported and only allow a certain number of readouts per day to conserve the battery.
Solution: In this case, the reading interval can be increased to 6 or 12 hours.
Meters fail irregularly, most of them are the same meters.
External disturbances on the lines, especially longer ones, can lead to faulty transmissions.
Solution: Keep meter wiring short.
Meter values do not match physical meter
Check the meter configuration.
Check the wiring between the meter and the gateway.
Not every M-Bus meter is compatible with our gateway. The list of compatible meters can be found on the M-Bus Gateway product page.
Replace M-Bus gateway
Install a new M-Bus gateway and place the contract on the new gateway.
Put the M-Bus into operation.
Set the readout interval on the portal.
Search for devices.
Check whether all M-Bus meters have delivered current values.
Note: Nothing needs to be changed in the smart-me configuration or in billing for the existing M-Bus meters.