Siemens SIMATIC S7 Configuration And Programming Manual

Conversion of S7 Distributed Safety from V 5.1 to V 5.2 + SP 1
Reading a Safety Program with S7 Distributed Safety V 5.2 + SP 1:
If you would like to use S7 Distributed Safety V 5.2 +SP 1 to read, but not change,
a safety program created with S7 Distributed Safety V 5.1, open the "Safety
Program" dialog box with V 5.2 +SP 1 . Do not compile the safety program.
Note
When you open the "Safety Program" dialog, of a consistent safety program
created with S7 Distributed Safety, V 5.1, the status: "The safety program is
consistent." is displayed although different signatures are displayed.
This is due to the fact that the length of the signatures has been changed from 16
to 32 bits.
Modifying a Safety Program with S7 Distributed Safety V 5.2 + SP 1:
If you want to use S7 Distributed Safety V 5.2 + SP 1 to change a safety program
created with V 5.1, proceed as follows:
1. Compile the safety program with S7 Distributed Safety V 5.2 + SP 1 prior to
making changes.
Result: All F-blocks of the Distributed Safety library (V1) that were used in the
safety program and for which there is a new version in the Distributed Safety
library of V 5.2 + SP 1 are automatically replaced following confirmation.
The collective signature of all F-blocks and the signature of individual F-blocks
change for the following reasons:
- Length of collective signature has been changed from 16 to 32 bits
- F-blocks of the Distributed Safety (V1) F-library were replaced
- Automatically compiled F-blocks have changed
2. Change the safety program according to your requirements.
3. Recompile the safety program.
4. Perform a comparison of the old and new version of the safety program.
- You can identify changes to the version of an F-block of the Distributed
Safety F-library (V1) by the changes to F-block signatures. Modified
signatures and initial value signatures of all F-application blocks and F-
system blocks must conform to those in Annex 1 of the Certification
Report.
- Furthermore, you can identify whether changes have been made in the
safety program. If necessary, the safety program must undergo another
acceptance test (see manual, Section 6.3).
Conversion of S7 Distributed Safety from V 5.2 + SP 1 to V 5.1
!
Safety Note
A safety program compiled with S7 Distributed Safety V 5.2 + SP 1 must not be
read or edited with S7 Distributed Safety V 5.1.
Product Information for the S7 Distributed Safety, Configuring and Programming Manual
6 A5E00169432-02

Siemens SIMATIC S7 Specifications

General

Brand	Siemens
Model	SIMATIC S7
Category	Controller
Language	English