Data Exchange Between the DP Master and AS-i Slave
63
DP/AS-Interface Link 20E
Release 11/2002
C79000-G8976-C138–04
2.5 PROFIBUS DP Control Commands
The DP/AS-i Link 20E supports all the control commands defined in the
PROFIBUS DP standard:
Table 2-6
Control command
Effect
FREEZE The values of the binary input data of the AS-i slaves are frozen by the
DP/AS-i Link 20E. The DP/AS-i Link 20E updates this data once with each
further FREEZE.
UNFREEZE The FREEZE command is canceled.
SYNC The values of the binary output data are frozen by the DP/AS-i Link 20E. The
DP/AS-Interface Link 20 updates this data once with each further SYNC.
UNSYNC The SYNC command is canceled.
CLEAR The values of the binary output data passed on by the DP/AS-i Link 20E to the
AS-i slaves are set to ’0’ by the DP/AS-i Link 20E.
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