Circuit diagram example
4.4 TIA Portal configuration
Safety engineering with AS‑Interface in the SIMATIC ET 200SP, including typical circuit diagram
Function Manual, 08/2020, A5E44991382002A/RS-AB/002
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4.4.6 Configuring safe AS-i slave monitoring
To change the safe I/O addresses and AS-i slave parameters, open the Properties dialog box of
the F-CM AS-i Safety ST in the device view of the ET 200SP station.
Under the "Safe inputs" tab there is an entry for each AS-i address in the range 1 ... 31.
Initially, all addresses for safe evaluation are deactivated. Select the tab for monitoring AS-i
address 1, and activate the "Activate input monitoring" option.
The individual module parameters are explained briefly below.
Tip: Clicking the green arrow to the right of the "Name" field to switch directly between the
F parameter dialog window of F-CM AS-i Safety ST and the fail-safe AS-i slave.
Figure 4-11 Setting the safe input monitoring of the F-CM AS-i Safety ST
By activating the input monitoring, you can enable the corresponding AS-i slave as an input
channel for signal processing in the safety program. The AS-i address must be assigned to a
safe AS-i input slave.
The configuration status provides information about whether a safe AS-i slave is configured
at this AS-i address ("Compatible safe AS-i slave configured"). Free AS-i addresses or those
occupied by a non-safe AS-i slave can also be configured (configuration status: "AS-i slave
missing"). The safe AS-i slaves can be inserted later.
Input address: The input bit address of the input channel for the signal processing in the
safety program is shown here. It is calculated automatically from the start of the inputs
entered in the "Addresses" tab.
Encoder evaluation: Two options are available here.
For the 1oo1 evaluation , the encoder is present once and connected to a single channel on
the first input of the safe AS-i slave. To achieve this, jumper the second input of the AS-i
slave. Instead of the jumper, you can also connect another single-channel sensor to the
second input. Only when both inputs supply an ON signal does the F-CM AS-i Safety ST
module transfer the "1" value to the safety program (the two inputs are ANDed). A
discrepancy analysis is not performed in the 1oo1 evaluation.
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