ABB SA/S 12.16.6.1 Product Manual - Knx Commissioning
ABB i-bus
®
KNX Commissioning
68 2CDC 505 056 D0207 | SA/S
Send status via object "contact
monitoring"
Options: no
after a change
always
The sending behaviour of the communication object Contact
monitoring
can be parameterized by the parameter. A contact fault is
indicated via the communication object Contact monitoring. An error
(value 1) is displayed as soon as a current of about 30 mA (observe
the tolerances) is detected with an open contact.
no: The value of the communication object is always updated but not
sent.
always: The switch status is updated and always sent, when there is a
change of status or the contact is to be opened and is not yet open. No
value is sent when closing the contact. The reset status is only sent with
the next opening.
after a change: A telegram is only sent if the value of the communication
object Contact monitoring changes. Here the bus load, particularly for
Switch Actuators with multiple outputs, can be influenced significantly.
Important
The contact position can only be correctly evaluated should the
switching actions occur via KNX. The SA/S cannot differentiate
between manual switching and a cable break or device fault.
Evaluation of the contact monitoring occurs about two seconds after
opening the contact.