Obvius BACnet - Manual (Page 43)

BACnet Server for AcquiSuite Page 43 of 52
CVS:bacnet/Documentation/BACnet_Users_Guide.doc
1. From the BACnet Controller’s point of view, are all devices “stale/down”, or just some? All
devices suddenly being “stale/down” suggests a networking problem between the Controller and
the AcquiSuite. See the section above, Symptom: BACnet Timeout or Communication Errors .
2. Is meter data being updated (refreshed) on the AcquiSuite side? The Data Age column of
the BACnet à Device List à show: [stats] tab will show how old each meter’s data is, and the RP
column (ReadProperty) will increment for each request. The Data Age column will also show an
“*” (asterisk) when an update is pending but not yet completed. If the AcquiSuite is successfully
completing requests, Data Age should periodically reset to 0. The length of time the “*” appears
will let you visually gauge how fast the AcquiSuite is refreshing data.
3. If the problem appears to be on the AcquiSuite-side, see How Do I Optimize Response Time for
solutions.
4. If the problem appears to be on the BACnet Controller side,
a. Check for Device Name, Device ID or Network Number conflicts .
b. Check if the Device ID of the AcquiSuite has simply changed. The most likely reason
this could occur is because the AcquiSuite hasn’t been assigned a permanent BACnet
name and ID , and it is using DHCP, and its DHCP-assigned address has changed.
c. Finally, try re-discovering the AcquiSuite from the Controller.
8.6 Symptom: Can’t Write (to Relays)?
If your BACnet Controller isn’t able to write to relays shared by the AcquiSuite, consider these possible
causes:
1. Supported relay type? Make sure the relay type is supported by the BACnet Server. If not,
please contact Obvius to request support for the new relay.
2. Attempting to write to Binary Value object? The AcquiSuite represents each relay as a pair of
objects – an Analog Input object and a Binary Value object. Only the Binary Value object may be
written. The Binary Value object’s name will be suffixed with “ Relay”. For example, here is how
two relay points would appear to a Controller: