Hitachi NJI-350B manual Control instructions-4, Conditional jump, Cu, Ct, 103

Chapter 5 Instruction Specifications

Item number

Control instructions-4

Name

Conditional jump

Ladder format

Condition code

Processing time (∝s)

Remark

R7F4

R7F3

R7F2

R7F1

R7F0

Average

Maximum

CJMP n (s)

DER

ERR

SD

V

C

Upper case :

z

1]

z

z

z

3



Conditions

Instruction format

Number of steps

do not meet

Condition

Steps

Lower case :

CJMP n (s)

3

32



Conditions meet

Bit

Word

Double word

Constant

Usable I/O

X

Y

M

CU, CT

WX

WY

WM

TC

DX

DY

DM

Other

R,

TD, SS,

WR,

DR,

n

Code number

{

0 to 255 (Decimal)

s

Jump condition

{

{

{

Function

• If the jump condition (s) of CJMP n(s) switches on, the control jumps the program from this instruction to the LBL n of the

same code number. Always use CJMP n(s) and LBL n in pairs.

• If the startup or jump condition is not established, the next instruction will be executed.

• To set this instruction in conjunction with other instructions in the same arithmetic-operation box, caution must be used

because the jump takes place without performing the operations specified after the instruction.

• The CJMP n(s) instruction is valid only within the same scan program. (A jump to a subroutine or interrupt scan cannot be

performed from a normal scan, nor vice versa.)

• Nesting of CJMP n(s) instructions is possible, but note so that an overload error does not occur.

Notes

• This instruction is checked prior to the execution, and if there is an error, the following error codes are set in the special

internal outputs R7F3 and WRF015. In this case, jump is not performed and the next instruction will be executed.

Special internal output

Error code

Error description

R7F3=1

WRF015

H0015

There is no LBL n.

H0040

A jump is attempted to a different program area.

Instruction for use

R101

•

When the startup condition and the R000 jump condition bit I/O are both on, it

CJMP n (R000)

jumps to LBL n.

•If there is a timer within the program it jumped to, the progress value is updated,

Program		but since instructions are not executed, output will not be turned on even if the
		ON conditions are met.
	LBL n
Program

CJMP n (s)

5-103