Preface
CPU 31xC and CPU 31x: Installation
Operating Instructions, 03/2011, A5E00105492-12
5
Changes in comparison to the previous version
The following table contains changes from the previous versions of the following
documentation from the S7-300 documentation package:
● Technical specifications manual, version 06/2010
● Operating instructions for installation, version 06/2010
The CPU- 314C-2 PN/DP has been added in delivery stage V3.3. It has the same
functionalities as the CPU 314C-2 DP and also has PROFINET functionalities such as those
of the CPU 315-2 PN/DP.
In delivery stage V3.3, the functionality and performance of all C-CPUs and the CPU 317-2
DP were improved compared to their predecessor versions.
Additional information was taken from the chapter "Information on converting to a CPU 31xC
or CPU 31x". If you required more information, however, please refer to the FAQs () on the
Internet.
CPU 312 312C 313C 313C-2
DP
313C-2
PtP
314 314C-2
DP
314C-2
PtP
315-2
DP
317-2
DP
Encryption of blocks
using S7-Block
Privacy
X X X X X X X X X X
Integration of a
maintenance LED
X
1, 2
X
2
X
2
X
2
X
2
X
1, 2
X
2
X
2
X
1, 2
X
2
Configurable
increase of control
and monitoring
performance
- - - - - - - - X X
Improved operational
limits for PT100
Analog input
- - X - - - X X - -
Data set routing - - - X - - X - X
1
X
Configurable process
image
X
1
X X X X X
1
X X X
1
X
Expansion of the
block number range
X
1
X X X X X
1
X X X
1
X
Number of displayed
diagnostic buffer
entries can be
configured in CPU
RUN mode
X
1
X X X X X
1
X X X
1
X
Reading out the
service data
X
1
X X X X X
1
X X X
1
X
Extension of SFC 12
with 2 new modes to
trigger the OB 86
during
enabling/disabling
- - - X - - X - X
1
X
Copying of 512 bytes
with SFC 81
X
1
X X X X X
1
X X X
1
X
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