Hitachi NJI-350B manual Control instructions-9, Start subroutine program, SB n, 110

SB n

Chapter 5 Instruction Specifications

Item number

Control instructions-9

Name

Start subroutine program

Ladder format

Condition code

Processing time (∝s)

Remark

R7F4

R7F3

R7F2

R7F1

R7F0

Average

Maximum

SB n

DER

ERR

SD

V

C

z

1]

z

z

z

Instruction format

Number of steps

0.5



Condition

Steps

SB n

1

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 99 (Decimal)

Function

• This instruction indicates the start of a subroutine program (processing is not performed).

• The n in the SB n cannot be used more than once in the same program.

• Even if a startup condition is used for SB n, it will be ignored.

• Always use SB n and RTS in pairs.

• Code the SB n to RTS subroutine program after the END instruction.

Notes

•This instruction is checked prior to execution, and when there is an error, the following error code is set in the special internal output WRF001. Also, the CPU error code '34' is set to special internal output WRF000.

CPU error code	Special internal output	Error code	Error description
34	WRF001	H0004	Duplicate definition of SB
		H0013	SB undefined

Instruction for use

	END
	SB 0
Subroutine 0 program
	SB 1
Subroutine 0.1 program
	RTS
		SB 0	SB 1

•When CAL 0 is executed, SB 0 to RTS is executed as a subroutine.

•When CAL 1 is executed, SB 1 to RTS is executed as a subroutine.

5-110