Siemens SINUMERIK 840Di - Page 237

06.03
7.3 SIMATIC S7 project
7-237
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
1
NC
Due to the I/O address and the message frame type of the machine axis, which
are entered in the machine data:
S MD13050: DRIVE_LOGIC_ADDRESS[n]
S MD13060: DRIVE_TELEGRAM_TYP[ n ]
the NC reads and writes the axis data from/into the appropriate I/O range of the
PLC/DP master:
1st machine axis: I/O address 272
Message frame type 102
2nd machine axis: I/O address 292
Message frame type 102
For configuring the drive within the framework of the NC start-up, please refer to
Subsection 10.5.3, page 10-313.
2
DP master
The information regarding the individual DP slaves are known to the DP mas-
ters from the PROFIBUS SDB generated from the configuration.
DP master equidistantly transfers the data to/from the DP slaves cyclically using
the following information:
PROFIBUS addr. 10: Setpoint: Slot 5, I/O address 272
Actual value: Slot 6, I/O address 272
Setpoint: Slot 9, I/O address 292
Actual value: Slot 10, I/O address 292
Message frame type 102
For a 2 axis-closed-loop control module of a SIMODRIVE 611 universal, the
following assignment applies:
S Slots 5/6 => Axis 1 or drive A
S Slots 9/10 => Axis 2 or drive B
3
DP save 611U
DP slave interprets the message frames received from the DP master because
of the drive parameters
S Parameter P0922 (message frame selection PROFIBUS)
Message frame type set:
Message frame type 102
After all PROFIBUS components (drives, ADI4, I/O devices, etc.) have been
inserted into the configuration and parameterized, the equidistant DP cycle is
parameterized in the final step.
Final
parameterization
7 PROFIBUS DP Communication