Hitachi NJI-350B manual FUN instructions-5, High-speed Counter Operation Control, 147, 129

Chapter 5 Instruction Specifications

Item number

FUN instructions-5

Name

High-speed Counter Operation Control

Ladder format

Condition code

Processing time (∝s)

Remark

R7F4

R7F3

R7F2

R7F1

R7F0

Average

Maximum

FUN 140 (s)

DER

ERR

SD

V

C

↕

z

z

z

z

Instruction format

Number of steps

147



Condition

Steps

FUN 140 (s)

—

3

Bit

Word

Double word

Constant

Usable I/O

Other

X

Y

M

CU, CT

WX

WY

WM

TC

DX

DY

DM

R,

TD, SS,

WR,

DR,

Argument (Counter

s

number, operation

{

control value)

Function

15

8 7

0

Counter number:

H01 to H04

S

Counter number

Operation instruction

Operation instruction:

H00 – Stop,

H01 – Start

•Performs the starting and stopping of the count operation for the specified counter.

Notes

•If a value other than H01 to H04 is specified for the counter number and the operation instruction is set to a value other than H00 or H01, DER will be set to “1” and no processing will be performed.

•If the specified counter number is set to a function other than a corresponding external I/O counter (single-phase counter, two-phase counter), DER will be set to “1” and no processing will be performed.

•Since Counter 4 is invalid when a 10-point CPU is used, if Counter 4 is specified, DER will be set to “1” and no processing will be performed.

•If the specified counter number is unable to make an output (PI/O function setting result by R7F5), DER will be set to “1” and no processing will be performed.

•This instruction is only used to start and stop the counter operation. Other counter settings will not be changed.

•The counter operation will start after the power is turned back on even if the power is turned off when the count operation is stopped by this instruction. The operation of the high-speed counter will be stopped only when this instruction specifies the stop instruction.

•The counter operation will continue when the CPU operation is stopped.

•When the count operation stops, the progress value update also stops. When starting the count operation, the progress value is cleared and then the operation starts.

Program example

			LD	R0
R0	DIF0	WR0 = H0101	AND	DIF0
			[
		FUN 140 (WR0)
			WR0	= H101
			FUN	140 ( WR0 )
			]

Program description

• Prior to starting a counter operation, various settings required for the counter operation are reflected in the special internal outputs, and the PI/O function setting flag (R7F5) is turned on while the CPU is being stopped.

For details on the special internal output settings, see Chapter 8. Starts the counter No. 1 operation.

FUN 140 (s)

5-129