Festo CPX-F8DE-P Manual page 48

1. System overview CPX-F8DE-P
no. Process
1 Module is not
passivated
Channel fault
appears
2 Module has
detected the
channel error
F-Host detects the
channel error in the
assembly
3 User eliminates a
channel error
User acknowledges
the channel error (at
least 1 F-I/O clock
signal)
4 Channel is no longer
passivated
The grey-marked cells emphasise the bits relevant for the respective table line.
Bit in output image è Tab. 1/7
1)
Bit in input image è Tab. 1/8, byte 1
2)
X: Signal can be 0 or 1
Tab. 1/10: Channel error acknowledgment – example
1-16
Acknowledgment sequence
When using the channel-wise passivation, acknowledgment is
made with the help of the safety program via bit 0 from byte0
of the output data (PAA) è Tab. 1/7.
The following description of the sequence shows the bits in
the input and output depiction of the input module that are
relevant to channel-wise passivation.
Channel- Electrical
wise pas­ status at
1)
sivation input
1 (active) X
1 (active) X
1 (active) X
1 (active) X
Status in Qualifica­
the input tion bit
2)
image
X 1
0 0
0 0
X 1
Festo P.BE-CPX-F8DE-P-E N en 1610a English
Acknow­
2)
ledgment
of the
channel
1)
fault
0
0
1
X