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How to configure an Anybus PROFIBUS Slave module with a Siemens Step7 PLC

SCM-7032-026

Rev 2.1

5.1.2 I/O configuration using data consistency

The S7 PLC can read out one, two or four bytes consistent from the I/O-image directly by accessing the data

as a Byte, a Word or a Double Word as described in the previous chapter, 5.1.1. This is the normal usage and

fits most applications. However if it is required to read out other consistent data areas it is necessary to use

the System Function Blocks SFC14 and SFC15. Below follows a description of these function blocks.

The first thing that has to be done is to specify the consistent data area in the hardware configuration. The

“Universal Module” can be selected with “drag and drop” as shown in Figure 16.

Figure 16 Selecting the Universal Module for consistent data transfer.

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