Program Blocks - Siemens SIMATIC NET S7-300-PROFIBUS CP 342-5 Equipment Manual

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1.5.3

Program blocks

For some communications services, there are preprogrammed functions and function blocks

(FCs / FBs / instructions) available as the interface in your STEP 7 user program.

Note

Current program blocks

We recommend that you always use the latest block versions for all module types.

You will find information on the current block versions and the current blocks to download

from the Internet in our Customer Support under entry ID:

Link: (https://support.industry.siemens.com/cs/ww/en/ps/15673/pm)

This recommendation assumes that you are using the latest firmware for the particular

module type.

Further information

• On programming and use of the CP as DP master or DP slave

On initializing the CP as DP master or DP slave and on the running of the program, see /1/

(Page 53)

• Interfaces and program sequence

Refer to the documentation of the program blocks in the online help of STEP 7 or in the

manual /4/ (Page 54)

CP 342-5

Equipment Manual, 01/2023, C79000-G8976-C146-11

Application and functions

1.5 Requirements for use

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