Delta Electronics DVP15MC11T User Manual

Chapter 8 Logic Instructions
8_
 Precautions for Correct Use

While Reset is TRUE, the counter will not count up.

When CV equals PV, the counter stops counting.

Programming Example

The variable table and program
Variable name
Data type
Initial value
CTU1
CTU
CTU1_EN BOOL FALSE
CTU1_CU
BOOL
FALSE
CTU1_Reset
BOOL
FALSE
CTU1_PV UDINT 4
CTU1_Q
BOOL
CTU1_CV
UDINT

Timing Chart:
Case 1： If CTU counts up normally, the value of CTU1_CV is increased by 1 whenever
CTU1_CU is triggered once.
Case 2： When CTU1_CV equals CTU1_PV, CTU1_Q is TRUE and CTU stops counting.
Case 3： When CTU1_Reset is TRUE, CTU1_CV is cleared to 0, CTU1_Q is FALSE. And the
counter will not count when CTU1_CU is triggered.
1
CTU
EN ENO
Q
CTU1
CU
Reset
CV
PV
CTU1_EN
CTU1_CU
CTU1_Reset
CTU1_PV
CTU1_Q
CTU1_CV
CTU1_CU
CTU1_Reset
CTU1_CV
CTU1_Q
CTU1_PV
Case 1 Case 2
Case 3
8-47

Delta Electronics DVP15MC11T Specifications

General

Brand	Delta Electronics
Model	DVP15MC11T
Category	Controller
Language	English