Festo CPX Electronic Manual page 155

B. Parameters and data of the CPX terminal
System parameters: System Idle mode
Function no. 4402
Description Defines the signal status which outputs/valves are to assume when the CPX
terminal changes into the Idle status.
In the following case, the channel−orientated Idle mode settings (module para
meters Idle mode and Idle state) are reset automatically for safety reasons in
order to avoid undesired signal states:
Bit Bits 4, 5
Values System Idle mode
Bit 5 4 Description
0 0 Reset all outputs (presetting)
0 1 Hold last state (retain signal status)
1 0 Assume Idle mode
Note Only relevant for certain field bus protocols Explanations on this can be found in
the manual for the relevant CPX field bus node.
Tab. B/7: Idle mode
Festo P.BE−CPX−SYS−EN en 0503b
When changing from Accept Idle mode" to Reset all outputs" or to Hold
last state".
[Idle mode]
[Reset outputs]
[Hold last state]
[Assume idle mode]
B−13