01/2007
8.3 Creating a PROFIBUS configuration
8-186
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
If you double–click an S120 DP slave in the station window, the dialog box: ”DP
Slave Properties” opens.
It is recommended that the isochronous DP cycle be enabled for all
DP slaves
S120 by enabling the isochronous DP cycle for the selected DP slave S120,
and then performing an alignment.
During adjustment all the values displayed in dialog box:
S DP slave properties
Tab card: Cycle synchronization
are transferred to all DP slaves of the same type in the configuration, here DP
slave S120.
Dialog box: DP slave properties
Tab card: Cycle clock synchronization
Radio button: ”Synchronize drive to isochronous DP cycle”
Button: ”Adjust”
Factor
General
Isochronous bus cycle activated
Network settings in ms
Synchronize drive to equidistant DP cycle
Cycle synchronizationConfiguration
Component Data_Exchange_Time Tdx:
Time To [ms]
Setpoint acceptance:
Time Ti [ms]
Actual value acquisition:
Increment/base time [ms]
Master application
cycle [ms]:
2.000
Isochronous DP cycle:
0.414
DP cycle [msec]:
2.000
2.000 2.000
0.125
0.125
0.1255
1
16
1
0.625
0.125
Help
Cancel
OK
Comparison
DP slave properties
Factor
Factor
Factor
Increment/base time [ms]
Increment/base time [ms]
Increment/base time [ms]
=
=
=
=
x
x
x
x
Fig. 8-7 Enabled isochronous DP cycle
Notice
If there are different types of isochronous DP slaves in a S7 project, e.g.
different SINAMICS drives, ADI4, etc., the following steps:
1. Synchronize drive to equidistant DP cycle
2. Perform adjustment
must be performed for each type of DP slave first before you can continue to
set the other parameters.
Activation of the
isochronous
DP cycle
Dialog box:
Start
8 PROFIBUS DP Communication
To Next Page
Loading...
