Pilz PNOZ m1p base unit - Manual (Page 67)

5.2 Function description
5 Loop formation (LOOP)
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5-2
5.2 Function description 5200 Function description 5- Schleifenbildung_Funktionsbeschreibung
The connection of an output to an input of the same element is detected
as an invalid loop in the PNOZmulti Configurator and cannot be config-
ured in the user program.
Such a loop is necessary in certain applications. For example, applica-
tions containing a step sequence, where the status of the previous step
influences the step that follows.
To meet this requirement you can configure a LOOP output and one or
more assigned LOOP inputs in the PNOZmulti Configurator.
The output information from the LOOP output is then made available to
the assigned LOOP inputs.
NOTICE
When forming a loop, please note that the presence of the out-
put signal at the LOOP input is delayed by up to one cycle (15
ms); as a result, the switch off delay of the connected output is
increased by up to one cycle.