6 symptom: can’t write (to relays), Ymptom, Rite – Obvius BACnet User Manual

Page 43: Elays

BACnet Server for AcquiSuite

Page 43 of 52

CVS:bacnet/Documentation/BACnet_Users_Guide.doc

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,

Is meter data being updated (refreshed) on the AcquiSuite side? The Data Age column of

the

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.

If the problem appears to be on the AcquiSuite-side, see

for

solutions.

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

, and it is using DHCP, and its DHCP-assigned address has changed.

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

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: