Keyence Visual KV Series Uživatelský manuál stáhnout pdf (Strana 257)

4.5 Special Functions Using High-speed Counters

3-233

Visual KV

Series

Chapter 4 High-speed Counters

4.5.5 Cam Switch Function

The cam switch function has two modes: cam switch mode, which simulates cam

operation; and multi-step comparator mode, which compares the value written in

DM1401 with multiple values.

■ Devices used with the cam switch function

Special utility relays

The preset value in the data memory is registered at the rising edge of the start

relay. When the preset value is changed, turn OFF special utility relay 2314 once

and then turn it ON again to register the new value.

■ Timing diagram of cam switch function

: Operation with the ladder program.

: Operation automatically executed by the Visual KV.

Description: When start relay 2314 is turned ON, the Visual KV automatically turns OFF

start relay 2314 and turns ON in-operation relay 2715 to activate the cam

switch function.

When in-operation relay 2715 is turned OFF, the cam switch function is

stopped.

Cam switch mode

Simulates a cam operation.

Connect an encoder to CTH0 to count pulses in double multiplication mode.

CTH0 uses input relays 0004 (phase A), 0006 (phase B) (KV-10xx: 0000), and 0008

(phase Z) (KV-10xx: 0002).

Relays are turned ON/OFF when the pulse count reaches the specified angle.

The cam switch function controls a maximum of 32 successive relays. Specify relay

Nos. with the data memory (DM1400). Each relay is turned ON/OFF once every

rotation. To turn relays ON/OFF several times in one rotation, use the OR instruction

in the ladder program.

■ Devices used in cam switch mode

Data memory

.oNyaleRno i t p i r cseD

4132yalert ratS

5132yalerror rE

5172yalerno i tarepo-nI

. o NM Dno i t p i r cseD

0041MD

0091nah t r eh t oseu l aV (sya l e r t up t uof osse r ddal a i t i n i se r o t S

. ) . 00e r as t i g i dow t t sa lesohw0092hguo r h t

2041MD

o tde t cennocec i vedeh t f ono i t a t o renor o fs r ebmunes l upeh tec i wT

) 43556o t1 (0HTC

7041MD / 6041MD

) .ged1.0: t inU(FFO/NOsnrutyalertuptuotsr i fhcihwtaelgnA

) 43556o t0 (

9041MD / 8041MD

•

9641MD / 8641MD

) . ged1 . 0: t i nU(FFO/NOsn r u tya l e rdnoceshc i hwt ae l gnA

) 43556o t0 (

•

) . ged1 . 0: t i nU(FFO/ NOsn r u tya l e rdn23hc i hwt ae l gnA

) 43556o t0 (

0741MDesume t sysr o fdev r eseR

2715

2314

Executed

Start relay

In-operation

relay

Cam switch

function

Stopped

▲

KVNKA Chap 04_2.p65 08.3.11, 0:08 PM233

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