CP 343-1 Lean
Equipment Manual, 01/2023, C79000−G8976−C198−09
11
Properties / services
1.1 Application
The CP 343- Lean communications processor is intended for operation in a SIMATIC S7-300 or
SIMATIC C7 automation system. It allows the connection of the S7-300 to Industrial Ethernet
and supports PROFINET IO.
To integrate the CP in a linear bus or a ring, to connect a further Ethernet device or to use
PROFINET media redundancy, a 2-port ERTEC real-time switch with autocrossing,
autonegotiation and autosensing was integrated.
1.2 Enhanced functions
Abbreviations used with the CP 343-1 Lean module
The module abbreviations used below for the CP 343-1 Lean (for example CX10) correspond
to the last four characters of the mid section of the order number.
Requirement for configuring new functions of firmware version V3.0
To use the features listed below, the following STEP 7 version is necessary:
• STEP 7 V5.5 + Service Pack 2 + Hotfix 1 + HSP 1056
With STEP 7 Professional V11.0 SP2, only the functions of firmware version V2.2 of the CP can
be configured.
Functional enhancements of the CX10 from firmware version V2.6 to V3.0 - can be used with
STEP 7 V5.5
The following new functions can be used with the module with firmware version 3.0:
• "Shared device" function with PROFINET IO
• Use of PROFIenergy functionality
This requires the following PROFIenergy program blocks for the CP 343-1 in the
"SIMATIC_NET_CP" library with the STEP 7 version listed above:
– PE_Start_CP, PE_CMD_CP, PE_I_DEV_CP and the program block DS3_WRITE_CP for the
use of power modules of the ET 200S for PROFIenergy.
– The supplementary program blocks FC0 to FC8 for the PROFIenergy response data can
be found in the Standard Library.
You will find the documentation of the program blocks in the online help and in the
manual for the program blocks, see References, /10/ (Page 76).
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