6 direct clock pulse output, 1 outline of direct clock pulse output, Visual kv series – KEYENCE Visual KV Series User Manual
Page 261
4.6 Direct Clock Pulse Output
3-237
Visual KV
Series
1
4
Chapter 4 High-speed Counters
4.6
Direct Clock Pulse Output
This section describes the outline and setting method for direct clock pulse output.
4.6.1
Outline of Direct Clock Pulse Output
Using the high-speed counter (CTH) and high-speed counter comparator (CTC), the
KV PLC can output clock pulses directly through output relays 0500 and/or 0501
without any delays caused by the scan time.
The period (frequency) and width of the pulses are determined by the period of the
internal clock used for the high-speed counter (CTH) and high-speed counter com-
parator (CTC).
The period of the clock pulse (frequency) can be changed with the program within
the following ranges.
Pulses of the internal clock are counted with the high-speed counter (CTH). When
the number of current pulses reaches the preset value of the high-speed counter
comparator (CTC), the ON/OFF status of output relays 0500 and/or 0501 is toggled
to output direct clock pulses.
Count value
Note 1: The operation of output relays 0500 and 0501 are determined by setting the
special utility relays.
Note 2: For more about setting special utility relays, refer to "4.2 Outline of High-
speed Counters" on page 3-206.
Note 3: The ON/OFF status when the direct clock pulse output is started is the
same as when the last direct clock pulse output is stopped. (Initial status: OFF)
Note 4: Output relays 0500 and 0501 cannot be used in a normal program during
direct clock pulse output.
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Visual KV Series Only
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