Bradley Smoker PLC-5 user manual Jsr, Sbr, Ret, Afi, Tnd, Ons, Osf, Osr

Instruction Set Quick Reference D-23

Instruction Description

JSR

JUMP TO SUBROUTINE

Program File	90
Input par	N16:23
Input par	N16:24
Input par	231
Return par	N19:11
Return par	N19:12

Jump to Subroutine	If the input conditions are true, the controller starts running a
JSR	subroutine Program File (90). The controller passes the Input
	Parameters (N16:23, N16:24, 231) to the subroutine and the RET
	instruction passes Return Parameters (N19:11, N19:12) back to
	the main program, where the controller encountered the JSR
	instruction.

SBR
SUBROUTINE
Input par	N43:0
Input par	N43:1
Input par	N43:2

Subroutine

SBR

The SBR instruction is the first instruction in a subroutine file. This instruction identifies Input Parameters (N43:0, N43:1, N43:2) the controller receives from the corresponding JSR instruction. You do not need the SBR instruction if you do not pass input parameters to the subroutine.

RET
RETURN ( )
Return par	N43:3
Return par	N43:4

Return	If the input conditions are true, the RET instruction ends the
RET	subroutine and stores the Return Parameters (N43:3, N43:4) to
	be returned to the JSR instruction in the main program.

AFI

Always False	The AFI instruction disables the rung (i.e., the rung is always
AFI	false).

			( TND )		Temporary End	If the input conditions are true, the TND instruction stops the
					TND	controller from scanning the rest of the program (i.e., this
						instruction temporarily ends the program).
			B3		One Shot	If the input conditions preceding the ONS instructions on the
			ONS		ONS	same rung go from false-to-true, the ONS instruction conditions
						the rung so that the output is true for one scan. The rung is
110
						false on successive scans.
						See page F-8 for a description of prescan operation for
						this instruction.
					One Shot Falling	The OSF instruction triggers an event to occur one time. Use the
		OSF
		ONE SHOT FALLING			OSF	OSF instruction whenever an event must start based on the
						change of state of a rung from true-to-false, not on the resulting
	Storage Bit			B3/0
					Status Bits:	rung status. The output bit (N7:0/15) is set (1) for one program
	Output Bit			15	OB - Output Bit	scan when the rung goes from true-to-false.
	Output Word			N7:0	SB - Storage Bit
						See page F-8 for a description of prescan operation for
						this instruction.

OSR
ONE SHOT RISING
Storage Bit	B3/0
Output Bit	15
Output Word	N7:0

One Shot Rising	The OSR instruction triggers an event to occur one time. Use
OSR	the OSR instruction whenever an event must start based on the
	change of state of a rung from false-to-true, not on the resulting
Status Bits:	rung status. The output bit (N7:0/15) is set (1) for one program
OB - Output Bit	scan when the rung goes from false-to-true.
SB - Storage Bit	See page F-8 for a description of prescan operation for
	this instruction.

Publication 1785-UM012D-EN-P - July 2005