Festo CTEU-PB Electronics Description page 42

2. Commissioning
Set
Reset
Set
Reset
2-6
Caution
The operating mode FREEZE or SYNC is reset automatically:
– when the bus node is switched on or off
– when the fieldbus interface stops
The operating mode FREEZE is also reset automatically
when:
– the bus connection to the bus node is interrupted (with
activated response monitoring in the controller)
FREEZE command
All input signals of the bus node are "frozen". The bus node
now sends a constant image of all inputs to the master. With
each further FREEZE command, the input image is updated
and sent again to the master.
Return to normal operation: UNFREEZE command
SYNC command
All output signals of the bus node are "frozen". The bus node
now no longer reacts to modifications to the output image in
the master. With each further SYNC command, the updated
output image is transmitted.
Return to normal operation: UNSYNC command
CLEAR_DATA command
All output signals of the bus node are reset.
Festo P.BE-CTEU-PB-OP+MAINT-EN en 1208NH English