02/24/97 1

Rockwell Automation Hands-On Seminar Series

202/24/97 2

SLC 500

BASIC LADDER

INSTRUCTIONS

302/24/97 3

Advanced Instructions

MathAddSubractMultiplyDivide

ComparisonGreater ThanLess ThanEqualNot EqualGreater Than or EqualLess Than or Equal

Data MovementMoveCopyClear

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Math Instructions - ADD

Source A + Source B = Dest

N7:010

N7:1 5

N7:215

10 + 5 = 15

ADDSource A N7:0

Source B N7:1

Dest N7:2

ADDI:1

0

502/24/97 5

Math Instructions - ADD

Source A + Source B = Dest

N7:0 1

N7:1 5

N7:1 6

1 + 5 = 6

ADDSource A N7:0

Source B N7:1

Dest N7:1

ADDI:1

0

Application: Running Total

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Math Instructions - ADD

Source A + Source B = Dest

N7:0 1

N7:1 5

N7:1 6

1 + 5 = 6

NOTE: This instruction executes every scan that the rung is true, therefore use a One-Shot OSR.

ADDSource A N7:0

Source B N7:1

Dest N7:1

ADDI:1

0

B3

0OSR

Application: Running Total

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Math Instructions - SUBTRACT

Source A - Source B = Dest

N7:010

N7:1 5

N7:2 5

10 - 5 = 5

SUBTRACTSource A N7:0

Source B N7:1

Dest N7:2

SUBI:1

0

802/24/97 8

Math Instructions - MULTIPLY

Source A x Source B = Dest

N7:010

N7:1 5

N7:250

10 x 5 = 50

MULTIPLYSource A N7:0

Source B N7:1

Dest N7:2

MULI:1

0

902/24/97 9

Math Instructions - DIVIDE

Source A ÷ Source B = Dest

N7:010

N7:1 5

N7:2 2

10 ÷ 5 = 2

DIVIDESource A N7:0

Source B N7:1

Dest N7:2

DIVI:1

0

S:13 0 remainder

S:14 2 unrounded quotient

MathRegister{

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Math Instructions - DIVIDE

Source A ÷ Source B = Dest

N7:029

N7:110

N7:2 3

29 ÷ 10 = 2.9

DIVIDESource A N7:0

Source B N7:1

Dest N7:2

DIVI:1

0

S:13 9 remainder

S:14 2 unrounded quotient

MathRegister {

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Comparison Instructions >

GREATER THANSource A N7:0

Source B N7:1

GTR 0:3

0( )

IF Source A > Source B THEN TRUE ELSE FALSE

N7:029

N7:110

29 > 10 TRUEtherefore Output isEnergized

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Comparison Instructions <

LESS THANSource A N7:0

Source B N7:1

LES 0:3

0( )

IF Source A < Source B THEN TRUE ELSE FALSE

N7:029

N7:110

29 < 10 FALSEtherefore Output isde-Energized

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Comparison Instructions =

EQUALSource A N7:0

Source B N7:1

EQU 0:3

0( )

IF Source A = Source B THEN TRUE ELSE FALSE

N7:029

N7:110

29 = 10 FALSEtherefore Output isde-Energized

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Comparison Instructions

NOT EQUALSource A N7:0

Source B N7:1

NEQ 0:3

0( )

IF Source A Source B THEN TRUE ELSE FALSE

N7:029

N7:110

29 10 TRUEtherefore Output isEnergized

1502/24/97 15

Comparison Instructions

GRTR THAN OR EQUALSource A N7:0

Source B N7:1

GEQ 0:3

0( )

IF Source A Source B THEN TRUE ELSE FALSE

N7:029

N7:110

29 10 TRUEtherefore Output isEnergized

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Comparison Instructions

LESS THAN OR EQUALSource A N7:0

Source B N7:1

LEQ 0:3

0( )

IF Source A Source B THEN TRUE ELSE FALSE

N7:029

N7:110

29 10 FALSEtherefore Output isde-Energized

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Data Movement - Move

MOVESource N7:0

Dest N7:1

MOVI:1

0

Source Dest

N7:050

N7:150

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Data Movement - Copy

COPY FILESource #N7:0

Dest #N7:5

Length 4

COPI:1

0

Source Dest

N7:010

N7:120

N7:230

N7:340

N7:4N7:5

10N7:6

20N7:7

30N7:8

40

}

}

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Data Movement - Clear

CLEARDest N7:1

CLRI:1

0

Zero Dest

N7:050

N7:1 0

2002/24/97 20

Advanced Instructions

ANY QUESTIONS???

MathAddSubractMultiplyDivide

ComparisonGreater ThanLess ThanEqualNot EqualGreater Than or EqualLess Than or Equal

Data MovementMoveCopyClear

2102/24/97 21

Timer Addressing and Parameters

Preset T4:0.PRE How long the timer should time for.

Accumulated T4:0.ACC How long the timer has timed for already.

Done T4:0/DN Set to “1” when accumulated value > preset value.

Timer Timing T4:0/TT Set to “1” when accumulated value < preset value.

Enable T4:0/EN Set to “1” when the rung containing the timer is true.

T4:0

File Type

File Number

Timer Number(0-255)

4Timers

File contains 256 timers

Preset Value

Accumulated Value

15 14 13

EN TT DNWord 0

Word 1

Word 2

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The Timer’s “done bit” turns the motor off after a 10 second time delay.

TIMER ON DELAYTimer T4:0Time Base 1.0Preset 10Accum 0

Stop Start Motor

]/[ ] [

] [

( )I:1/0I:1/1

M1O:3/0

O:3/0

] [

M1O:3/0

]/[T4:0/DN

(EN)

(DN)

Timer Done

Timers

TON

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Timers

TIMER ON DELAYTimer T4:0Time Base 1.0Preset 10Accum 0

TON

] [ (EN)

(DN)

ON-OFFSelector Switch

I:2/2

Motor

] [ ( )O:3/0T4:0/TT

Timer Timing

The Timer’s “timing bit” turns the motor on for only 10 seconds.