Sequence/timing diagram
Figure 35: Sequence/timing diagram
Complementary information
•
If the input is already 1 during the first logic cycle, the function block does not
evaluate this as a positive edge.
•
If the input is already 0 during the first logic cycle, the function block does not
evaluate this as a negative edge.
7.6.2.5
Function blocks for output control
7.6.2.5.1
External device monitoring V1
Overview
The function block monitors a switching amplifier with a feedback channel (e.g., a
contactor with positively guided contacts) connected to the
Enable
output. The function
block checks whether the feedback signal connected to the
EDM feedback signal
input
switches as expected.
Important information
NOTE
If an ON-OFF filter or a discrepancy time, for example, is configured for the input signals
in the hardware configuration, then the statuses of the
Control input
input and the
EDM
feedback signal
input may differ over time. This can result in an error.
b
Avoid time differences in the signals.
b
Configure the
Max. response delay
parameter.
Principle of operation
Table 85: Inputs
Input
Description
Control input
Data type: Boolean
The input must be connected to the logic signal that represents the
desired status for the external device.
If the input in the first logic cycle = 1, then this is evaluated as a rising
edge.
CONFIGURATION
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O P E R A T I N G I N S T R U C T I O N S | Flexi Compact
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Subject to change without notice
