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Table 2- 2

S7-200 program

Main routine

V memory data

Timer and counter instructions

SBR subroutine

INT interrupt routine

Note

STEP 7-Micro/WIN wizard and library (*.mwl file) program code is not converted

This includes subroutines, interrupt routines, V memory data, and symbol definitions. You

must create substitute program logic and program symbols.

2.4

Compare the symbols/tags in the original program and the converted

program

The purpose of the comparison is to identify the symbols that were completely converted,

partially converted, newly created, or not converted.

● Open the original program in STEP 7-Micro/WIN and open the converted program in

● Compare the STEP 7-Micro/WIN program symbols with the converted STEP 7 Basic

Global symbols

● STEP 7-Micro/Win global symbols are defined in the Symbol table.

● The converted STEP 7 Basic global symbols (I, Q, and M memory only) are located in the

SIMATIC S7-200 to SIMATIC S7-1200 software conversion tool

Manual, 1/2010

2.4 Compare the symbols/tags in the original program and the converted program

POU (Program Organizational Unit) conversion rules

STEP 7 Basic, at the same time.

program tags (symbolic references).

PLC Tag table or in data block DB1 (converted S7-200 V memory symbols).

S7-1200 program

Program cycle OB1

DB1

Timer instruction with a timer DB (data block)

Counter instruction with a counter DB

FC (function):

The converted FC numbering is offset by 1 compared to the

•

S7-200 SBR number (SBR0 converts to FC1).

FCs are created with or without local parameters.

•

FC call parameters appear in the block interface table of the

•

STEP 7 Basic block editor which corresponds to the local

variable table of a STEP 7-Micro/WIN subroutine.

Hardware interrupt OB or cyclic interrupt OB:

OBs are created with or without local parameters.

•

OB local parameters appear in the block interface table of the

•

STEP 7 Basic block editor which corresponds to the local

variable table of a STEP 7-Micro/WIN interrupt routine.

Program conversion process