Extended instructions
9.2 String and character
S7-1200 Programmable controller
378 System Manual, V4.2, 09/2016, A5E02486680-AK
Example: Reading the name of an instance data block
The following example shows how to read out the name of an instance data block.
Create two tags in a global data block for storing the data.
Define the parameters of the instruction as follows.
The Level1_gin block executes the GetInstanceName instruction, which determines the
associated instance data block of the Level1_gin block and outputs the name as a character
string at output parameter OUT (outputInstName). According to the value 0 of parameter
SIZE (limitSIZE), the length of the character string is unlimited.
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