Siemens SIMATIC S7-300 Series Reference Manual page 92

CPU 31x-2 as DP Master/DP Slave and Direct Communication
2.1 Information on DPV1 Functionality
The aim
The EN50170 Standard for Distributed Peripherals was subject to further
development. All changes were incorporated in IEC 61158 / EN 50170,
Volume 2, PROFIBUS. In order to simplify matters we now refer to DPV1
Mode.
How do I identify a DPV1 Master/Slave?
DP Master CPUs of the S7-400 family and the CPU 318-2, respectively with
integrated DP interface, support DPV1 Master functionality as of Firmware Version
3.0.0.
DP Slaves, listed in the STEP 7 hardware catalog under their family name can be
identified as DPV1 Slaves with the help of the info text. DP Slaves implemented in
STEP 7 via GSD files support V1 functionality as of GSD Revision 3.
As of which STEP 7 version is migration to DPV1 mode possible?
As of STEP 7 V5.1, Servicepack 2.
Which operating modes are available for DPV1 modules?
You are using a DPV1 automation module, but do not want to migrate to DPV1
mode. In this case you use S7 compatible mode. In this mode, the automation
module is compatible to EN50170. In this case, however, you cannot utilize full
DPV1 functionality. You could, for example, use the new SFBs 52...54. However,
default values are written to non-existing data.
You are using a DPV1 compatible automation module and want to migrate to DPV1
mode. In this case, use DPV1 mode for full functionality. In your station you can
continue using automation modules not supporting DPV1 as usual.
Can I use all previous slaves after migration to DPV1 mode?
Yes, without restriction. The only difference here is that your previous slaves do not
support extended DPV1 functions.
2-2
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01