Expandable Instructions; Selecting A Version For An Instruction - Siemens S7-1200 System Manual

STEP 7 programming software
2.3 Easy-to-use tools
2.3.5

Expandable instructions

Some of the more complex instructions are expandable, displaying only the key inputs and
outputs. To display all the inputs and outputs, click the arrow at the bottom of the instruction.
2.3.6

Selecting a version for an instruction

The development and release cycles for certain sets of instructions (such as Modbus, PID
and motion) have created multiple released versions for these instructions. To help ensure
compatibility and migration with older projects, STEP 7 allows you to choose which version
of instruction to insert into your user program.
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Click the icon on the instruction tree task card to enable the
headers and columns of the instruction tree.
To change the version of the instruction, select the
appropriate version from the drop-down list.
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG