Hitachi NJI-350B manual FUN instructions-11, High-speed counter preset, 162, 135

Chapter 5 Instruction Specifications

Item number

FUN instructions-11

Name

High-speed counter preset

Ladder format

Condition code

Processing time (∝s)

Remark

R7F4

R7F3

R7F2

R7F1

R7F0

Average

Maximum

FUN 146 (s)

DER

ERR

SD

V

C

↕

z

z

z

z

Instruction format

Number of steps

162



Condition

Steps

FUN 146 (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, preset

{

specification)

s+1

Argument

{

(on-preset value)

s+2

Argument

{

(off-preset value)

Function

Counter number:

H01 to H04

15

8

7

0

S

Preset specification:

H00 – Specification of on-preset

Counter number

Preset specification

value and off-preset value

H01 – Specification of on-preset

S + 1

On-preset specification

value only

H02 – Specification of off-preset

S + 2

Off-preset specification

value only

•The on-preset value and off-preset value will be set according to the preset specifications for the specified counter number.

•The coincidence output value will remain unchanged even when coincidence output is possible.

Notes

•If a value other than H01 to H04 is specified for the counter number and a value other than H00 to H02 is set for the preset specification, 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 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.

•The specified preset value will be checked using the criteria shown below. If an error occurs, DER will be set to “1” and no processing will be performed.

If there is no error, the bit respective to the setting error detail information WRF057 will be set to “0” and releases the operation disabled status.

1] When the preset specification is 00H

If S+1 (on-preset) and S+2 (off-preset) values are equal, and error is generated.

2] When the preset specification is 01H

If S+1 (on-preset) and the off-preset value of WRF076 to WRF079 are equal, an error is generated.

3] When the preset specification is 02H

If S+2 (on-preset) and the off-preset value of WRF072 to WRF075 are equal, an error is generated.

•This instruction is used only to set the on-preset value and off-preset value. Other counter settings will not be changed and it will not affect the count operation.

•The settings made using the instruction will be reflected in the special internal output (WRF072 to WRF075 and WRF076 to WRF078). However, it is not reflected if DER becomes equal to “1.”

•If the range for S exceeds the valid range of the I/O, DER will be set to “1” and no processing will be performed.

FUN 146 (s)

5-135