KEY LOCK SWITCH
Using the KEY LOCK SWITCH function block the
input status of a manual key-operated switch is
checked. If the key is not turned, the OUTPUT
output is "0" (FALSE), otherwise the OUTPUT
output is "1" (TRUE).
Parameters
Input Type:
- Single NO – makes it possible to connect
components with one normally open contact
- Double NC – makes it possible to connect
components with two normally closed con-
tacts.
Manual Reset: If selected, a reset can be re-
quested on every activation of the command.
Otherwise the activation of the output will cor-
respond directly to the input conditions.
There are two types of reset: "Manual" and
"Monitored". On the selection of the manual re-
set, the system only checks the signal transition
from 0 to 1. With the monitored reset the double transition from 0 to 1 and then back to
0 is checked.
WARNING: If Manual Reset is selected, the next Input must be used. Example: If In-
put1 and Input2 are used for the function block, Input3 must be used for the reset
input.
Output Test: Using this option you can select which test output signals are to be sent to
the component contacts. Short circuits between the wires can be detected and rectified by
means of this additional check. For this purpose it is necessary to configure the test out-
put signals (from the test output signals available).
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