Table of Contents
Glossary
SINEC
Previous product name for networks and network components from Siemens.
Now: SIMATIC NET
SYNC mode
The SYNC mode is a DP mode in which one, more than one (group) or all −> DP
slaves transfer data to their process outputs at the same time. The time at which
the data is transferred is signaled by the SYNC command (a control frame for
synchronization).
Target rotation time
A −> bus parameter for −> PROFIBUS. The token gives a −> station on
PROFIBUS the right to transmit frames. A station compares the token rotation
time it has measured with the target rotation time. The difference between the
two times decides whether only high or also low priority frames can be sent.
Token bus
Network access technique for bus access rights with more than one active
station (used in PROFIBUS). The token is passed on from active station to
active station. For each active station, the token rotates once between sending
the token and receiving it.
UNFREEZE
Job for resetting the −> FREEZE mode.
UNSYNC
Job for resetting the −> SYNC mode.
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142
DP/AS-Interface Link 20E
Release 08/2008
C79000-G8976-C235−01
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