MBus Add-On
Configuration Parameters
In addition to the GW4 configuration parameters the add-on has the following specific parameters:
Wired M-Bus Meter Reading
| Description | Key | Type | Possible Values | Default |
|---|---|---|---|---|
| MBus Baudrate and address List | mbusAddrList | String | any | *:+ |
| Number of readouts to be uploaded together | addonAccumulate | Number | 1-60 | 1 |
Detailed Description
mbusAddrList Parameter
This parameter specifies the baudrate, list of devices and a optional interface separated by :
Instead of a numeric baudrate a * may be specified for baudrate detection.
The list of device addresses is separated by ,. Instead of a address a * may be specified to scan for primary addresses or a + to scan for secondary addresses. Detected addresses are appended to the list of devices.
Optionally a interface can be added after the list of devices for gateways with multiple interfaces capable of M-Bus communication. A M specifies M-Bus, a R specifies RS-485. At gateways with only one interface this option is ignored.
Device scanning is only executed at power-on. If a device is connected later the gateway should be restarted to execute the device scan again.
It is possible to specify any combination of numeric addresses, + and *. This may lead to read a device twice, first with its primary address and again with its secondary address.
Instead of a configuration it is possible to specify a A to activate automatic configuration mode. In this case the baudrate is detected automatically, followed by a scan for secondary addresses. If both is successful a suitable configuration string is generated and stored in mbusAddrList, overwriting the A.
When using the automatic configuration make sure all devices are connected and up and running!
addonAccumulate Parameter
To save energy it is possible to store measurements before uploading them.
With the default value of 1 all measurements are immediately uploaded.
When a value >1 is configured, this amount of readouts will be collected before activating the modem and uploading the data.
LoRaWAN Communication
The transmission of the wired mbus data is identical to the wireless mbus data