SYCON.net PROFIBUS DP Slave DTM
SYCON.net PROFIBUS DP Slave DTM
SYCON.net PROFIBUS DP Slave DTM
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Glossary 124/132<br />
Master<br />
<strong>Slave</strong><br />
Sync<br />
<strong>PROFIBUS</strong> <strong>DP</strong> Master devices initiate the data traffic on the bus. In the<br />
<strong>PROFIBUS</strong> protocol Master devices are called active participants. A master<br />
may send messages without external request.<br />
<strong>Slave</strong> devices are peripheral devices, like for example I/O devices or<br />
drives. <strong>Slave</strong> devices are also called passive participants. They do not<br />
receive the bus access authorization. That means, they may only accept<br />
received messages from the Master or send a message to the Master after<br />
enquiry of the Master.<br />
With the control command SYNC the <strong>DP</strong>-Master arranges the <strong>DP</strong>-<strong>Slave</strong>,<br />
that the <strong>DP</strong>-<strong>Slave</strong> freezes the states of the Outputs on the actual value.<br />
During the following telegrams the <strong>DP</strong>-<strong>Slave</strong> saves the Output data in each<br />
case, which it has save as Output data. The Outputs are first updated<br />
cyclically until the <strong>DP</strong>-Master sends the control command UNSYNC. The<br />
<strong>DP</strong>-<strong>Slave</strong> has to be assigned to a group for the control command SYNC in<br />
the configuration.<br />
<strong>DTM</strong> for Hilscher <strong>PROFIBUS</strong> <strong>DP</strong> <strong>Slave</strong> Device | Configuration of Hilscher <strong>Slave</strong> Devices<br />
DOC091001OI07EN | Revision 7 | English | 2011-09 | Released | Public © Hilscher, 2009-2011
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