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Allen-Bradley ControlLogix 1756 User Manual

Allen-Bradley ControlLogix 1756
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Publication 1756-RM084F-EN-P - July 2002
iii
Chapter 6
Entering Structured Text Logic
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Entering a Structured Text Routine . . . . . . . . . . . . . . . . . . 6-1
Specifying STX_ROUTINE attributes . . . . . . . . . . . . . . . 6-1
Entering Structured Text Logic. . . . . . . . . . . . . . . . . . . . . . 6-2
Structured text STX_ROUTINE example . . . . . . . . . . . . 6-3
Entering Comments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Entering Structured Text . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Chapter 7
Entering Sequential Function
Chart Logic
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Entering a Sequential Function Chart Routine. . . . . . . . . . . 7-1
Specifying SFC_ROUTINE attributes . . . . . . . . . . . . . . . 7-3
SFC_ROUTINE example . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Entering Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Entering the PRESET block. . . . . . . . . . . . . . . . . . . . . . 7-11
Entering the LIMIT_HIGH block . . . . . . . . . . . . . . . . . . 7-11
Entering the LIMIT_LOW block . . . . . . . . . . . . . . . . . . 7-11
Entering the ACTION_LIST block . . . . . . . . . . . . . . . . . 7-12
STEP example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
Entering Transitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
Entering the CONDITION block . . . . . . . . . . . . . . . . . . 7-15
TRANSITION example . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
Entering Subroutine Calls . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
SBR_RET example . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Entering Stops. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
STOP example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
Entering Branches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
Entering the LEG block . . . . . . . . . . . . . . . . . . . . . . . . 7-18
BRANCH example . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19
Entering Directed Links . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-19
DIRECTED_LINK guidelines . . . . . . . . . . . . . . . . . . . . . 7-20
DIRECTED_LINK example . . . . . . . . . . . . . . . . . . . . . . 7-20
Entering Text Boxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
TEXT_BOX guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
TEXT_BOX example . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
Entering Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
ATTACHMENT guidelines . . . . . . . . . . . . . . . . . . . . . . 7-21
ATTACHMENT example. . . . . . . . . . . . . . . . . . . . . . . . 7-21
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Allen-Bradley ControlLogix 1756 Specifications

General IconGeneral
BrandAllen-Bradley
ModelControlLogix 1756
CategoryController
LanguageEnglish

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