These ST sections are created when importing a legacy application into Unity Pro with a different PLC as the target PLC family
when the configuration of the I/O modules cannot be converted into the target PLC's module configuration.
In some cases, ST sections will be created to emulate legacy configuration behavior.
For example, the converter would replace the Compact ADU206 module with a Modicon M340 BMXAMI0410 module (if M340 were the
target PLC).
To facilitate and explain access to the status information, the converter creates emulation code, which transfers the bits to input variables. This code
is contained within the ATSTCopIn ST section.
In the case of a Compact ADU204 conversion to M340 BMXART0414, for example, the ATSTCopIn section would emulate code for the temperatures modes.
when the configuration of the I/O modules cannot be converted into the target PLC's module configuration.
In some cases, ST sections will be created to emulate legacy configuration behavior.
If the address conversion option 'Full Topological' is selected, copying code for the module data between topological address and corresponding areas
in %M or %MW memory is placed into these sections as well.
in %M or %MW memory is placed into these sections as well.
For example, the converter would replace the Compact ADU206 module with a Modicon M340 BMXAMI0410 module (if M340 were the
target PLC).
To facilitate and explain access to the status information, the converter creates emulation code, which transfers the bits to input variables. This code
is contained within the ATSTCopIn ST section.
In the case of a Compact ADU204 conversion to M340 BMXART0414, for example, the ATSTCopIn section would emulate code for the temperatures modes.
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