Siemens SIMATIC ET 200AL, System Manual

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Functions
5.2 Intelligent IO devices (I-devices)
PROFINET with STEP 7
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Function Manual, 05/2021, A5E03444486-AL
Configuring the transfer area
Configure a transfer area with the following properties in the I-device:
Figure 5-14 I-device transfer area, sample program
Programming I-device
To program the sample program for the I-device, follow these steps:
1.
Using the SCL programming language, create a new function with the name "preprocessing"
in the project tree in "Program blocks" > "Add new block". Open the function.
2. In the interface of the function "preprocessing", create the following tags:
Name Data type Input / output type
input 1 bool Input
input 2 bool Input
result bool Output
3. In the instruction window of the function "preprocessing", write the following program
code:
#result:=#input 1&#input 2;