Rockwell Automation 1760-xxxx Pico Controller User Manual - Manual (Page 102)

Publication 1760-UM001D-EN-P - September 2005
4-42 Draw a Circuit Diagram with Pico
When Pico is restarted in Run mode, the counter relay continues with
the retentively stored actual value.
Time Switch All versions of Pico are equipped with a real-time clock except the
units with the ’-NC’ designation. The procedure for setting the time is
described in Set Date, Time, and Daylight Saving Time on page 6-9.
Pico has 8 time switches, providing a total of 32 switching times.
Each time switch has four channels which you can use to set four on
and off times. The channels are set via the parameter display.
The real-time clock has a back-up battery. This means that it
continues to run in the event of a power failure, although the time
switch relays do not operate. The technical data in Appendix A
contains details on the battery back-up time.
1
2
......... .........
3
4
5
A B C D E
.........
0
1
2
3
4
F
6
7
1: Count pulses at counter input I1 (I2)
2: Setpoint of the counter.
3: Actual value of the counter.
4: Enable of the counter, CC13 (CC14).
5: Count direction, direction coil DC13 (DC14).
6: Reset coil of the counter RC13 (RC14).
7: Contact of the counter, C13 (C14).
• Range A: The relay contact C13 (C14) of the counter
with setpoint value 512 switches as soon as the
actual value is 512.
• Range B: When new count pulses or the counter
enable is not present, the actual value is retained.
• Range C: If the count direction is reversed DC13
(DC14), the contact is reset when the actual value is
511.
• Range D: The count direction is set to ‘up counting’.
• Range E: The Reset coil RC13 (RC14) resets the
counter to 0. No pulses are counted.
• Range F: The Reset coil is not active; pulses are
counted.
TIP
If you wish to load an existing Pico Series A
Controller circuit diagram, the existing time switch
functions are retained. The Pico Series B Controller
time switch operates in the same way as a Series A
Controller.