Tmh: 0.01-s timer – KEYENCE Visual KV Series User Manual

Page 92

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2.4 Instruction Details

3-68

2

Chapter 2 Instructions

Example

Coding

Description

•

0500 and 0501 turn ON 0.1-s after 0000 turns ON.

•

TMH is a subtraction timer. When the current value reaches "#00000", the
contact of the timer No. turns ON.

•

When input relay 0000 turns OFF, contact T000 turns OFF and the current value
of TMH000 is reset.

Note 1: The TMH number cannot be the same as any other TMS, TMH, TMR, C, or
UDC instructions in the same program.

Note 2: The current value of TMH is not retained but is reset to the preset value if
power failure occurs or if power is turned OFF.

•

When the number specified by TMH is used as a contact (T000 in the above
example), this contact can be used as many times as desired. It can also be
used as both N.O. and N.C. contacts.

•

Timer accuracy = 0.01 sec. + (1 scan time) (max.)

Operand

Key operations

TMH: 0.01-s Timer

Sets a 16-bit on-delay timer that
counts down in 0.01-s decrements.

*1 0.01 s x 10 = 0.1 s

LDB

4

O R

9

FUN

#ddddd

T

xxx

T

H

0000

T000

0500

#00010

T

000

T

H

Line No.

Instruction

Operand

0000

LD

0000

0001

TMH

000 #00010*

1

0002

LD

T000

0003

OUT

0500

FUN

LDB

4

O R

9

Operand

(Preset value)

Operand

(TMH No.)

ENT

R-SRCH

ENT

R-SRCH

:

TMH

Visual KV

KV-300

KV-10/16

KV-24/40/80

No.: 000 to 249

No.: 000 to 249

No.: 000 to 063

No.: 000 to 119

Preset value:

Preset value:

Preset value:

Preset value:

#00000 to #65535

#00000 to #65535

#00000 to #65535

#00000 to #65535

KVNKA Chap 02_4aP.p65

08.3.11, 11:58 AM

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