Phoenix Contact PSRmodular - Figure 5-44: Time Diagram for Manual Reset (Left) and Monitored Reset (Right); Figure 5-43: SWITCH Function Block (Switch;Pushbutton)

PSRmodular system
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PHOENIX CONTACT 109241_en_03
5.1.2.14 SWITCH function block (switch/pushbutton)
The “SWITCH” function block checks the status of the “I
N” input of a pushbutton or switch
(not safety components). If the pushbutton is pressed, the “O
UT” output signals logic “1”;
otherwise it is logic “0”.
Figure 5-43 “SWITCH” function block (switch/pushbutton)
Parameters
Manual Reset If this option is selected, a reset must be performed manually every time the function block
is activated. Otherwise, the activation of the output directly follows the state of the inputs.
Reset Type There are two types of reset: “Manual” or “Monitored”. If the “Manual” option is selected, only
the signal transition from “0” to “1” is checked. In the case of the “Monitored” option, the dou-
ble transition from “0” to “1” and back to “0” is checked.
Figure 5-44 Time diagram for “Manual” reset (left) and “Monitored” reset (right)
NOTE:
Inputs at a function block must always be used in ascending order.
Example: if Input 1 is used for the function block, Input 2 must be used for the reset input.
MANUAL
RESET
OUTPUT
t = 250 ms
t
MONITORED
RESET
OUTPUT
t2 = 250 ms
5 s > t1 > 250 ms
t1
t2