06.03
7.3 SIMATIC S7 project
7-241
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
On tab card “Clock synchronization” the following parameters are now set for
each type of DP slave:
S
Equidistant DP cycle T
DP
S
Master application cycle T
MAPC
S
Actual-value sensing T
I
S
Setpoint acceptance T
O.
Factor
General
Equidistant bus cycle activated
Network settings in msec:
Synchronize drive to equidistant DP cycle
Clock synchronization
Configuration
Cyclic portion of equidistant master
Setpoint acceptance [msec]:
Actual-value sensing [msec]:
Basic time [msec]
Master application cycle
[msec]:
2.000
Equidistant DP cycle:
1.258
DP cycle [msec]:
2.000
2.000
2.000
0.125
0.125
0.125
12
1
16
1
1.500
0.125
Help
Cancel
OK
Adjust
DP slave properties
Factor
Factor
Factor
Basic time [msec]
Basic time [msec]
Basic time [msec]
=
=
=
=
x
x
x
x
Fig. 7-11 Dialog: DP slave properties
The DP cycle time of the DP slave 611U must be set to the cycle time of the DP
master displayed under “equidistant DP cycle”.
Notice
For DP cycle time T
DP
the following condition must be fulfilled:
DP cycle = isosynch. DP cycle
The parameter: Master Application Cycle T
MAPC
defines the integer ration be-
tween the master application (NC position controller) and the equidistant DP
cycle.
Using ratios other then 1:1, the dead times of the position controller can be re-
duced if NC hardware of the lower performance range is used.
DP cycle
T
DP
Master application
cycle T
MAPC
7 PROFIBUS DP Communication
Содержание SINUMERIK 840Di
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