Siemens SIMATIC ET 200AL System Manual page 933

Reintegration after channel fault
Use this parameter to select how the channels of the fail-safe module are reintegrated after a
fault.
Use in S7-300/400 F-CPUs
This parameter is always set to "Adjustable" when you use the fail-safe module in S7- 300/400
F-CPUs. You make the required setting in the F-I/O DB of the fail-safe module.
Use in ET 200pro, ET 200SP and S7-1200/1500 F-CPUs
When using the fail-safe module in ET 200pro, ET 200SP and S7-1200/1500 F-CPUs, you set
this parameter in the STEP 7 dialog of the fail-safe module:
• "Adjustable"
• "All channels automatically"
• "All channels manually"
If you have set the "Behavior after channel fault" parameter to "Passivate channel", you
enable individual setting of the reintegration type per channel with the parameter
assignment "Adjustable". The reintegration type of the respective channel is specified with
the "Channel failure acknowledge" channel parameter.
If you have set the "Behavior after channel fault" parameter to "Passivate the entire module",
you can only select the same reintegration type for all channels.
4.3.2 DI parameters
Short-circuit test
You can enable the short-circuit detection for the channels of the F-module for which
"Internal sensor supply" is set.
The short-circuit test is only useful if you are using simple switches that do not have their
own power supply. For switches with a power supply, for example, 3/4-wire proximity
switches, a short-circuit test is not possible.
The short-circuit test switches off the sensor supply briefly. The length of the deactivation
period is equivalent to the configured "Duration of short-circuit test".
If a short-circuit is detected, the fault is reported to the F-CPU and the input is passivated.
The following short-circuits are detected:
• Short-circuit of input to L+
• Short-circuit of the input to another channel when it has a 1 signal
• Short-circuit between the input and sensor supply of another channel
• Short-circuit between the sensor supply and the sensor supply of another channel
If the short-circuit test is disabled, you must make your wiring short-circuit and cross-circuit
proof or select a connection type (discrepancy, nonequivalent) which also detects the cross
circuits using discrepancy.
Digital I/O module F-DI 4+F-DQ 2x24VDC/2A, 4xM12 (6ES7146-5FF00-0BA0)
Equipment Manual, V1.0, 05/2021, A5E51082342-AA
Parameters/address space
4.3 Explanation of parameters
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