Programming; Compatibility With The Previous Product; Enhanced Functions And Modifications - Siemens CP 342-5 Manual

Communications processor for connection of simatic s7-300 / to profibus dp
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1.5.3

Programming

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 47)
● 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 48)
1.6

Compatibility with the previous product

1.6.1

Enhanced functions and modifications

Replacing a module
The CP 342-5 (6GK7 342-5DA03-0XE0) is suitable as a replacement for the following
predecessor products:
● CP 342-5 (6GK7 342-5DA00-0XE0)
● CP 342-5 (6GK7 342-5DA01-0XE0)
● CP 342-5 (6GK7 342-5DA02-0XE0)
The CP 342-5 (6GK7 342-5DF00-0XE0) is also functionally compatible with the named CPs,
however it uses an optical instead of the electrical PROFIBUS interface.
CP 342-5 / CP 342-5 FO
Manual, 07/2017, C79000-G8976-C146-10
Application and functions
1.6 Compatibility with the previous product
21

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