Delta Electronics VFD-E manual Register Types, RST C0 CNT C0 K5 LD C0 OUT Y0

Appendix D How to Use PLC Function

Example:

LD X0

RST C0

LD X1

CNT C0 K5

LD C0

OUT Y0

X0

RST C0 X1

CNT C0 K5 C0

Y0

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.

X0

X1

C0		3
present			2
value	1

0

Contacts Y0, C0

4

5

settings

0

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

1.Setting range of 32-bit high-speed addition/subtraction counter is : K-2,147,483,648~K2,147,483,647.

2.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
	register		to STOP or power is off.
2.	Special	:	Each special register has the special definition and purpose. It is used
	register		to save system status, error messages, monitor state.

D-24 Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11