7 PROFIBUS DP Communication
7.3 SIMATIC S7 project
The message frame type of DP slave 611U, which is set on the SlaveOM, must
match with the PROFIBUS address set on the NC and the drive:
No automatic adjustment takes place!
The following data must be identical.
1. SIMATIC S7 configuration DP slave 611U
Message frame type
2. SINUMERIK 840Di-NC
3. SIMODRIVE 611 universal
Parameter P0922 (PROFIBUS message frame type selection).
For a detailed description of the different message frame types, please see:
SIMODRIVE 611 universal and universal E:
/FBU/ SIMODRIVE 611 universal, Description of Functions
SIMODRIVE POSMO SI/CD/CA
/POS3/ User Manual SIMODRIVE POSMO SI/CD/CA
in each case in Section: Communication on PROFIBUS DP.
A communication between NC and the individual axes of the DP slaves 611U in
the SINUMERIK 840Di can only take place if the I/O addresses for setpoint and
actual value of an axis are the same.
This prerequisite is taken into account by SlaveOM automatically when inserting
a DP slave 611U into a configuration.
The I/O addresses for set and actual values of an axis must be the same.
I/O address actual value = = I/O address setpoint
If a DP slave 611U is inserted into an S7 project due to a copying process
(e.g. from another S7 project), the I/O addresses are assigned exclusively
under the control of "HW Config".
This may have the consequence that one axis are assigned different I/O
addresses for set and actual values. In this case, the I/O addresses must
be corrected manually.
To avoid access conflicts between PROFIBUS DP drives and I/O modules,
you need to set values w272 for ADI4 DP slave 611U I/O addresses.
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition