Siemens SIMOVERT MASTERDRIVES Manual page 449

05.2006
8.3.11 Configuration (example of peer-to-peer functionality)
Technology
Siemens AG 6SE7087-6QX70 (Version AG)
SIMOVERT MASTERDRIVES
Angular synchronism with 3 MASTERDRIVES MC units.
24 Volt
MASTER
DRIVES
MC
Dispatcher
M
~
Drive 1
Fig. 8.3-7 Configuration example of peer-to-peer functionality
♦ Drive 1, master drive with integrated virtual master axis
The master speed setpoint for the drive group is specified via an
analog input or via the PROFIBUS DP.
The integrated virtual master axis function generates a position,
speed and acceleration setpoint for slave drives 2 and 3. In addition,
the slave drives are powered up/down by the master drive (control
word). This means that every slave drive is given its individual
control word.
Vice versa the slave drives send their individual status word to the
master drive. This results in the following table:
Master drive 1
Transmit
Slave drive 2
Slave drive 3
Table 8.3-3 Transmitting and receiving control/status words between master and
slave drives
♦ Drive 2 and 3, slave drives with integrated position control
Compendium Motion Control
MASTER
DRIVES
MC
Transceiver
M
~
Drive 2
Master drive 1 Slave drive 2
ZW_2
ZW_3
Communication / SIMOLINK
MASTER
DRIVES
MC
Transceiver
M
~
Drive 3
Receive
Slave drive 3
STW_2 STW_3
S set S set
n set n set
a set a set
8.3-21