Festo CPX-M-FB20 Manual page 103

3. Diagnostics and error handling
Description
Address(es) of valve posi-
tion 1
Address(es) of valve posi-
tion 2
Address(es) of valve posi-
tion 3 to 8 accordingly
Tab. 3/8: Valve diagnostics 1
Festo P.BE-CPX-FB20/21-EN en 1202a
Valve diagnostics 1
Note
Note that valve diagnostics 1 and 2 are only designed for
series manifolds with bistable valves. The subsequent de-
scriptions only apply to these series manifolds.
A valve position for energizing 2 solenoid coils (bistable
valve) is assigned 2 addresses.
Bit Valu Significance
e
Bit 0 0 Coil 12 or 14 has a fault
1 Coil 12 or 14 has no fault
Bit 1 0 Coil 12 or 14 has a fault
1 Coil 12 or 14 has no fault
If the corresponding bit = 0, the following applies to valve positions
for valves with 2 coils (12+14):
1. If the outputs are set, coil 12 or coil 14 registers a short circuit.
2. If the outputs are not set, coil 12 or coil 14 registers open load
3. If one of the two outputs is set, then it can not be distinguished
between short circuit and open load.
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