Sequence/timing diagram
Figure 40: Sequence/timing diagram
Complementary information
To evaluate the minimum length of the reset pulse (here: 100 ms), the reset signal
must be sampled twice after a 0→1 transition is detected. The required minimum
length of the reset signal is therefore extended by one logic execution time.
7.6.2.6.2
Restart V1 (Restart)
Overview
You can use this function block to implement a restart function.
The function block makes it possible to acknowledge a manual safety stop and subse‐
quently restart the application.
Important information
WARNING
Undesired reset following short-circuit to High
The dangerous state may not be stopped or not be stopped in a timely manner in the
event of non-compliance.
b
Make sure the signal line is laid with protection (to prevent a cross-circuit with
other signal lines).
b
No short-circuit detection, i.e., no referencing to test outputs.
Principle of operation
Table 95: Inputs
Input
Description
Restart
Data type: Boolean
For connecting a restart command switch.
A valid restart sequence comprises the signal sequence 0–1–0.
Pulse duration: 100 ms … 30 s, at least 2 × logic execution time
Release
Data type: Boolean
See
Enable
output.
7
CONFIGURATION
86
O P E R A T I N G I N S T R U C T I O N S | Flexi Compact
8024589/2020-11-10 | SICK
Subject to change without notice
