Information On Commissioning - Festo CPV..-DI01 series Electronic Manual

2. Commissioning PROFIBUS−DP

2.1.3 Information on commissioning

2−6
FREEZE and SYNC
The operating modes FREEZE and SYNC are supported by the
CP system in accordance with EN 50170.
The method of accessing the commands FREEZE and SYNC
depends on the controller used. Please refer here to the
documentation for your field bus module.
Caution
The operating modes FREEZE or SYNC will be reset auto
matically if:
the CP system is switched on/off
the field bus module is stopped.
Only the operating mode FREEZE will be reset automati
cally if:
the bus connection to the CP system is interrupted
(response monitoring active).
FREEZE command
All the inputs of the CP system will be frozen." The CP sys
tem now constantly sends an image of all the inputs to the
master. With each further FREEZE command, the input image
is updated and sent again constantly to the master.
Return to normal operation: UNFREEZE command
SYNC command
All the inputs of the CP system will be frozen." The valve
terminal now no longer reacts to modifications to the output
image in the master. With each further SYNC command, the
updated output image will be transmitted.
Return to normal operation: UNFREEZE command
Festo P.BE−CP−DI01−EN en 0503d