Festo Checkbox Compact CHB-C-C Manual page 70

4. I/O module extensions of the Checkbox PLC
4.3.2 Selecting the parts type
4-10
A high-order controller can change automatically between
four different parts types.
The change of types takes place in the stop status. The sig-
nals at the inputs are then set according to the binary coding
of the desired parts type (see following table). The signals
must be applied continuously before the Checkbox PLC can
start again.
Binary coding
Parts type 1
Parts type 2
Parts type 3
Parts type 4
Pulse-time diagram
Parts type change 1 > 4
1
Pin I/20
Type select 0
0
1
Pin I/5
Type select 1 0
1
Pin I/6
Remote start
0
0
I/20 (2 ) I/5 (2
LOW LOW
HIGH LOW
LOW HIGH
HIGH HIGH
Type 1
Type 4
min 0.1 s
Festo P.BE-CB-COMP-EN en 0211a
1
)