SWITCH
Using the SWITCH function block the input status
for a pushbutton or switch (NOT A SAFETY
SWITCH) is checked. If the pushbutton is pressed,
the OUTPUT output is "1" (TRUE), otherwise the
OUTPUT output is "0" (FALSE).
Parameters
Manual Reset: If selected, a reset can be request-
ed on every activation of the device. Otherwise
the activation of the output will correspond direct-
ly to the input conditions.
There are two types of reset: "Manual" and "Moni-
tored". On the selection of the manual reset, 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 is used for the function block, Input2 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 switch.
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 output signals (from the test
output signals available).
StartUp Test: If selected, the test is undertaken on switching on the switch. This test is
undertaken by opening and closing the switch to carry out one complete function test
and to activate the output. This test is only requested on starting the machine (on switch-
ing on the module).
Filter (ms): This parameter makes it possible to filter the signals that are received from the
switch. The filter can be set to between 3 and 250 ms and removes any contact bounce.
The time set for the filter affects the calculation of the total response time of the module.
Enable Out Error: If selected, an error detected by the function block is signaled.
Item Description: Here you can enter a functional description for the component. The text
is displayed in the upper part of the symbol.
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