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If a BACnet items is shown as "not good", there can be different reason reasons for that.
BACnet device is offline
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The device status is specified by the BACnet standard.
- operational
- operational-read-only
- download-required
- download-in-progress
- non-operational
- backup-in-progress
"non-operational" normally indicates that the BACnet is not reachable via the network. For more details about possible system-status values take a look at the BACnet specification and at the datasheet / user manual of your BACnet device.
BACnet device is online but some items are shown as UNCERTAIN
If a BACnet device is online but one or more items are shown as UNCERTAIN, the so called status flags of the BACnet object may report a failure. Each BACnet object has a property "status-flag" which provides information about the quality of the object's value. This property is a bit field that has the following subfield:
- in-alarm
- fault
- overridden
- out-of-service
In addition the property "Reliability" provides additional information in case a fault occurs.
These status flags are also shown as item properties within our NETx Server. To show them, select the BACnet object within the server item tree and take a look at the item's properties:
In some uses cases, it is desired to show item value as GOOD even if one of these flags is true. To configure this behavior, open BACnet > Driver Configuration ... and enable the corresponding options. For example, to show the item value as GOOD if the status flag "FAULT" is true, enable the following option:
