KEYENCE Visual KV Series - Manual (Page 270)

4.7 Examples of Direct Clock Pulse Output
3-246
Visual KV
Series
4
Chapter 4 High-speed Counters
0000
0000 2105
RES
2105
SET
0000
0000
RES
KEEP
2105
SET
Coding
Note 1: When the input enable relay for the high-speed counter is used to start/stop
the clock pulse, the response is delayed by a maximum of one scan when output
starts. The response is also delayed by a maximum of one scan when output stops.
Note 2: Refer to the following "Tips" to start and stop the clock pulse.
■ Tips
•
Use special utility relay 2105 to control (enable/disable) the clock pulse output by
external inputs.
• Use the SET-RES pair or KEEP instruction to turn special utility relay 2105 ON/
OFF.
With this setting, the clock pulse is always turned OFF when it starts as well as
stops.
• When either of the following program is added to the example on the previous
page, the clock pulse is output from 0500 only when 0000 is ON.
When SET-RES instructions are used When KEEP instruction is used
• You can change the period (frequency) of the clock pulse by changing the CTC0
preset value using the LDA and STA instructions.
To change the period of the clock pulse, refer to "4.3.4 Count Input Method" (p.3-
212).
Line No. Instruction Operand Line No. Instruction Operand
0000 LD 2008 0013 CON
0001 MPS 0014 SET 2109
0002 SET 2103 0015 CON
0003 CON 0016 RES 2110
0004 RES 2104 0017 CON
0005 CON 0018 RES 2111
0006 RES 2105 0019 CON
0007 CON 0020 RES CTH0
0008 RES 2106 0021 LD 2002
0009 CON 0022 CTH 0 2101
0010 RES 2107 0023 CTC 0 #00050
0011 MPP 0024 CTC 1 #00020
0012 RES 2108
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