Festo CPX - Reading out the Diagnostic Data Flow Diagram

5. Diagnostics and error handling
5−16
Festo P.BE−CPX−SYS−EN en 0902e
Reading out the diagnostic data flow diagram
The function number is accepted if there is a positive edge at
control bit A15. The input bits E0 ... E7 supply the diagnostic
data when the quitting bit supplies a 1−signal.
No
Quitting
bit =1?
Yes
Starting the read process
Set the function number
Set control bit (A15)
Accept data
No
Yes
Reset control bit A15
Quitting
bit =0?
Start timeout
Timer
expired?
Reset control bit
Timer
expired?
No
Yes
Timeout
Yes
No
Fig.5/6: Reading out the diagnostic data flow diagram