Rockwell Automation 1760-xxxx Pico Controller User Manual - Manual (Page 100)

Publication 1760-UM001D-EN-P - September 2005
4-40 Draw a Circuit Diagram with Pico
Wire a High-Speed Counter
The following assignment of the digital inputs apply.
• I1: High-speed counter input for counter C13.
• I2: High-speed counter input for counter C14.
You integrate a high-speed counter into your circuit in the form of a
contact and coil.
The coils and contacts have the following meanings:
IMPORTANT
High-speed counters operate independently of the
program cycle time. The results of the actual value
setpoint comparison is only transferred once every
program cycle for processing in the circuit diagram.
The reaction time in relation to the setpoint/actual
value comparison can therefore be up to one cycle
in length.
IMPORTANT
If you use C13 or C14 as high-speed counters you
must enable them with the coil CC13 or CC14
accordingly.
Contact Coil
C13 to C14 The contact switches if the actual value is greater than
or equal to the setpoint.
CC13, CC14 Enable of the high-speed counter on 1 signal coil
activated.
DC13, DC14 Counting direction:
• Status 0, not activated, up counting.
• Status 1, activated, down counting.
RC13, RC14 Reset, coil triggered: Actual value reset to 00000.
IMPORTANT
The high-speed counter can also be enabled
specifically for a special operating state. This has the
advantage that the cycle time of the device is only
burdened with the counting when it is taking place.
If the high-speed counter is not enabled, the cycle
time of the device is shorter.
-----------CC13
C13--------SN3
I6---------DC13
I8-C13-----RC13