User manual

Publication 1760-UM001A-EN-P
Drawing a Circuit Diagram with Pico 4-25
Figure 4.8 Signal Diagram:
The relay contact of a counter with setpoint value 6 switches when the actual value
is 6 (A). If the counting direction is reversed (B), the contact switches off when the
actual value is 5. Without a counting pulse, the actual value is retained (C). The
reset coil resets the counter to 0 (D).
Possible applications include the counting of components, lengths or event
frequency.
Programming a Counter Relay
You can integrate a counter relay into your program in the form of a contact and
coil. Counter relay C1 receives counting pulses via the count coil CC1. The
counting direction can be changed via the direction coil DC1:
• DC1 = 0: relay C1 counts up
• DC1 = 1: relays C1 counts down
The Reset coil RC1 is used to reset the counter to 0.
Contact C1 is used to process the result of the counter in the circuit diagram. To
prevent unpredictable operation, use each coil of a relay only once in the circuit
diagram.
Enter at least one contact and a coil in your circuit diagram:
• A relay contact in the contact field, in this case C1
• A count coil in the coil field, in this case CC1.
CCx
DCx
RCx
8
6
4
2
0
7
5
3
1
BACD
Output
Reset
Direction
Count
On
On
OnOn
On