Festo CPX DE Series Manual page 81

2. Digital CPX input modules
Module parameters: Signal extension time
Function no. 4828 + m * 64 + 1
Description Determines the signal extension time for the relevant I−module. Signal states
accepted as logical input signals usually remain valid at least until the specified
signal extension time (minimum signal duration) has expired. Changes of edge
within the extension time are ignored.
Bit Bits 6, 7
Values Signal stretching time
Bit 7 6 Description
0 0 0.5 ms
0 1 15 ms (presetting)
1 0 50 ms
1 1 100 ms
Note There is a danger that short signals are not recognized" due to long cycle times
of the higher−order controller. In order that such signals are also taken into
consideration in the control sequence, a signal extension time can be specified
(see section CPX system manual). The signal extension time can be activated
channel−by−channel (see channel−specific module parameters).
Tab. 2/30: Signal stretching time
Module parameters: Signal extension channel x
Function no. 4828 + m * 64 + 6
4828 + m * 64 + 7 (additionally for CPX−16DE, channel 8
Description Determines whether the signal extension for the relevant I−channel is to be
enabled or blocked.
Bit Bit 0
Bit 0
Values Signal extension input channel ...
0 = blocked (presetting)
1 = enabled
Note The signal extension time can be specified separately for each module
(see function no. 4828 + m * 64 + 1, bit 6, 7).
Tab. 2/31: Signal extension channel x (channel−specific)
Festo P.BE−CPX−EA−EN en 0804g
7 (channel 0 7)
7 (channel 8 15) (for CPX−16DE channel 8
with function no. 4828 + m * 64 + 7)
m = module number (0
m = module number (0
[Signal extension Inp Ch ...]
[Disabled]
[Enabled]
47)
[Signal extension]
47)
15)
15
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