Festo Кабели и принадлежности - Manual (Page 60)

4. Commissioning
4−14
Festo P.BE−SPC200−COM−PDP−E N en 0901c
4.4 Basic principles of configuration
4.4.1 FREEZE and SYNC
The SPC200 supports the PROFIBUS control commands Sync
and Freeze. If a PROFIBUS master sends these control comĆ
mands, the internal I/Os of the field bus module which are
used for communication (I10.0...I13.15 or Q10.0...Q13.15)
will be treated as follows:
Caution
In the following cases, the FREEZE or SYNC mode will be
automatically reset:
Ĉ when the SPC200 is switched on/off or after a system
reset
Ĉ when a project is loaded with WinPISA
Ĉ when the field bus master has stopped.
The FREEZE mode will also be reset automatically in the
following case:
Ĉ when the bus connection to the SPC200 is interrupted
(response monitoring active).
FREEZE The internal outputs of the field bus module are mapped on
inputs of the master. With this control command the internal
outputs of the field bus module (Q10.0...Q10.15) can be
frozen." The field bus module then sends a constant output
image to the master. The following FREEZE command causes
the output image to be updated. The updated output image
is then sent constantly to the master.
Return to normal operation UNFREEZE command.