Siemens programming the cpu 314c-2dp User Manual

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Automation and Drives - SCE 
 
 
 
 
T I A  Training Document
 
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  Module 
 
2. 
NOTES ON THE USE OF THE CPU 314C-2DP 
 
 
The CPU 314C-2DP is shipped
 
with an integrated PROFIBUS DP interface and integrated 
inputs/outputs.  
 
The following PROFIBUS protocol profiles are available for the CPU 314C-2DP: 
 
DP interface as master according to EN 50170.  
DP interface as slave according to EN 50170. 
 
PROFIBUS-DP (decentralized peripherals) is the protocol profile for connecting decentralized 
peripherals/field units with very fast reaction times.    
 
The addresses of the input and output modules of this CPU can be parameterized. 
 
Due to the following performance data, this CPU is especially suitable for training purposes:   
 
- 48 kByte RAM, load memory in the form of a plug-in MicroMemoryCard (MMC), 64 kByte to 4 
MByte 
- 8192 bytes DI/DO, including  992 bytes central 
- 512 bytes AI/AO, including 248 bytes central 
- 0.1 ms / 1 K commands 
- 256 counters 
- 256 timers 
- 256 clock memory bytes 
- 24 DIs, including 16 which can be used for integrated functions; all can be used as alarm inputs as 
well 
- 16 DOs, integrated; 4 of which are fast outputs 
- 4 AIs for current/voltage, 1 AI resistor integrated 
- 2 AOs for current/voltage, integrated 
- 4 pulse outputs (2.5 kHz) 
- 4-channel counting and measuring with 24 V (60 kHz) incremental encoders  
- Integrated positioning function 
 
 
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n                      STEP 7 program  
 
Testing 
A5 
Issue date: 02/2008                                                                                                                          Programming the CPU 314C-2DP