Siemens SINUMERIK 840Di - Page 230

06.03
7.3 SIMATIC S7 project
7-230
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
For a description of a full DP cycle, refer to Subsection 7.1.2, Page 7-205.
Typical parameter values are as follows:
– Equidistant DP cycle (T
DP
): 2,000 msecs
– Actual-value sensing (T
i
) 0.250 msecs
– Setpoint acceptance (T
o
) 1,000 msecs
Notice
DP slaves ADI4:
– Order No.: 6FC5 211–0BA01–0AA0
– Order No.: 6FC5 211–0BA01–0AA1
exhibit different behavior with respect to parameterization of the actual value
recording (T
i
) and setpoint acceptance (T
o
) that deviates from one of the
above–mentioned boundary conditions.
S DP slave ADI4 with MLFB ...–0AA0
A parameterization that deviates from one of the above mentioned bound-
ary conditions is ignored by this DP slave ADI4, since the parameters are
set permantenly internally. The DP slave ADI4 starts communication with
the DP master using the values that deviate from he parameterized values
without issuing an error message.
S DP slave ADI4 with MLFB ...–0AA1
If a configuration that deviates from the above/mentioned boundary condi-
tions is loaded to this DP slave ADI4, the DP slave ADI4 does not
start cy-
clic communication with the DP master.
Typical values
7 PROFIBUS DP Communication