indicator). Since the FIx are bistable the last state remains available even after the WIC1 and
DiggiMEC are no longer supplied (i. e. have been switched o).
All output relay contacts are potential-free. Each relay can be assigned a signal out of
the »assignment list«.
NOTICE!
Whenever the DiggiMEC is not actively used by a human operator we recommend to
keep the lid closed. (Depending on the local security directives you might also want to
use the sealing option.)
This prevents an unintended re-positioning of the ag indicators / output relays.
Furthermore, it reduces the risk of dust or dirt intruding into the mechanics of the ag
indicators.
Within menu branch [Device Para / DiggiMEC / FI / BO], set the following parameters for
each FIx:
•
»Assigned signal«: The parameter »FIx assign.« assigns a trigger signal to FIx.
•
• With the setting »FIx latching« = “No latching”, the FIx continuously adopts the state•
of the assigned signal.
• If »FIx latching« is set to “With latching” or to “Latching w. Auto-Reset”, the state•
that is set by the trigger signal is permanently stored. (For details see ╚═▷ “3.9.3.1
Latching”.)
Each FIx can only be reset – “acknowledged” – after the signal that had initiated its setting
has dropped out.
3.9.3.1 Latching
After the assigned signal has become active a latched FIx keeps its state until it is
acknowledged, or some automatic reset occurs.
A latched FIx gets reset only in any of the following cases and only after the assigned trigger
signal has dropped out.
The following latching modes are settable via [Device Para / DiggiMEC / FI /
BO] »FIx latching«:
• “No latching” – The status of the ag indicator immediately follows the status of the•
assigned signal.
• “With latching” – When the assigned signal gets active it sets the ag indicator,•
which stays set. After the assigned signal has dropped o the ag indicator can be
electrically reset by the device.
• “Latching w. Auto-Reset” – latching with automatic reset, see also ╚═▷ “Automatic•
Reset”.
120 WIC1 WIC1-1.0-EN-MAN
3 Hardware
3.9.3.1 Latching
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