SmartPLC SafeLine AC4S with fieldbus interfaces
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8.6.2
Set up fail-safe network variables
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► Observe the notes on the configuration of the Ethernet configuration interfaces 1 (X3) and
2 (X8).
→
Change IP settings
(
► Observe the max. data volume that can be transferred for dimensioning the safe network
variables (
→
Note on the size of the exchange objects
(
► Include the following objects in the calculation of the transfer data:
logical exchange objects:
→
Data exchange between standard PLC and fail-safe
PLC
(
safe fieldbus communication (FSoE):
→
Safe fieldbus communication
(
To transmit safe data from AC4S 1 to AC4S 2:
Requirements
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AC4S 1 and AC4S 2 are participants of the same CODESYS project (→
Add additional device to the
project
>
The AC4S devices 1 and 2 are coupled via the Ethernet network.
1 Create network variable list in the transmitter
►
In the safety extension of the device tree of AC4S 1: Select [Safety Logic] > [SafetyApp].
►
Select [Project] > [Add Object] > [Safety network variable list (Sender)].
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Dialogue window appears.
►
Enter a unique name for the list in the field [Name].
►
Click on [Add].
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The editor window shows the configuration of the variable list of the sender.
2 Declare safe variables
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Right-click on the Editor window.
►
Select [Insert Variable Declaration] in the context menu.
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Dialogue window appears
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Set the parameters of the safe variable as requested.
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Click on [OK] to add the safe variable to the network variable list.
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The editor window shows the declared variable.
►
Optional: Repeat step 2 to add additional safe variables to the network variable list.
3 Create network variable list in the receiver
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In the safety extension of the device tree of AC4S 2: Select [Safety Logic] > [SafetyApp].
►
Select [Project] > [Add Object] > [Safety network variable list (Receiver)].
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Dialogue window appears.
►
Enter a unique name for the list in the field [Name].
►
Click on [Add].
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The editor window shows the configuration of the variable list of the receiver.
4 Couple network variable lists
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Double click on created network variable list (receiver)
►
The editor window shows the configuration of the variable list.
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Select the requested network variable list (sender) in the [Associated Sender] list.
►
Click on [Refresh].
►
CODESYS couples the network variable lists of the transmitter and the receiver.
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The editor window shows the safe variables of the coupled network variable list.
5 Optional: Set up other fail-safe cross communication