Product manual

TAC Xenta Server – Gateway, Technical Manual B Protocols
Schneider Electric Buildings AB, June 2011 161 (184)
04-00124-06-en
The entered priority is sent with all object value write requests. If
the target object is not commendable then the priority is ignored
and the last written value is applied. However, if the target object
is commendable then the highest priority written value is applied,
while lower priority values are ignored.
Interface Status Signals
The BACnet PTP interface driver generates several network specific
communication status signals, as described below.
• ComsFail – Flags a complete communications failure. Activated
only if communications has failed to the target half-router.
• ObjsFail – Flags if communications has failed to one or more
objects on the target BACnet network. Normally objects fail
because an incorrect device address or object instance number has
been entered. However, output objects may also fail as a result of
attempting to write an out-of-range value to it.
• online – Flags ONLINE during normal network communications,
and will change to OFFLINE only if communication has failed to
one or more objects on the target BACnet network. An OFFLINE
condition normally indicates incorrect communication property
settings, or faulty wiring of the network between the Xenta 913
and one or more objects on the target BACnet network.