D.4.7 register types – Delta Electronics AC Motor Drive VFD-E User Manual

Page 307

Appendix D How to Use PLC Function|

D-24

Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11

Example:

LD X0

RST C0

LD X1

CNT C0 K5

LD C0

OUT Y0

CNT

RST

1. When X0=On, RST command is

executed, C0 reset to 0 and
output contact reset to Off.

2. When X1 is from Off to On,

counter will count up (add 1).

3. When counter C0 attains settings

K5, C0 contact is On and C0 =
setting =K5. C0 won’t accept X1
trigger signal and C0 remains
K5.

Contacts Y0, C0

C0
present

value

settings

32-bit high-speed addition/subtraction counter C235:

Setting range of 32-bit high-speed addition/subtraction counter is :

K-2,147,483,648~K2,147,483,647.

The settings can be positive / negative numbers by using constant K or data register D

(special data register D1000~D1044 is not included). If using data register D, the setting

will occupy two continuous data register.

The total band width of high-speed counter that VFD-E supports is up to 30kHz and 500kHz for pulse

input.

D.4.7 Register Types

There are two types of register which sorts by characters in the following:

1. General

: The data in register will be cleared to 0 when PLC switches from RUN

to STOP or power is off.

2. Special

: Each special register has the special definition and purpose. It is used

to save system status, error messages, monitor state.