Rockwell-automation Logix5000 Controllers I/O and Tag Data Programming Bedienungsanleitung Seite 1

Programming Manual Logix5000 Controllers I/O and Tag Data 1756 ControlLogix, 1756 GuardLogix, 1768 Compact GuardLogix, 1769 CompactLogix, 1789 SoftLog

Preface These documents contain additional information concerning related Rockwell Automation products. Resource Description Logix5000 Controllers P

Chapter 1 Communicate with I/O modules To communicate with an I/O module in your system, you add the module to the I/O Configuration folder in the Con

Chapter 1 Communicate with I/O modules The Logix5000 controller uses connections to transmit I/O data. Term Definition Connection A communicatio

Communicate with I/O modules Chapter 1 formats. Each format uses a different data structure. The communication format that you choose also determin

Chapter 1 Communicate with I/O modules Ownership In a Logix5000 system, modules multicast data. This means that multiple devices can receive the s

Communicate with I/O modules Chapter 1 If module is And another controller And you want to Then use this type of connection Owns the module ---

Chapter 1 Communicate with I/O modules Important: Changing Electronic Keying parameters online interrupts connections to the device and any dev

Communicate with I/O modules Chapter 1 • Same catalog number• Same or higher Major Revision • Minor Revision as follows: • If the Major Revision is

Chapter 1 Communicate with I/O modules I/O information is presented as a set of tags. • Each tag uses a structure of data. The structure depends

Communicate with I/O modules Chapter 1 Where Is SubMember Specific data related to a Member. Bit Specific point on a digital I/O module; depends

Important user information Read this document and the documents listed in the additional resources section about installation, configuration, and oper

Chapter 1 Communicate with I/O modules The drill routine executes the logic for the drill machine. The map_outputs routine copies the values of ou

Chapter 2 Organize tags With a Logix5000 controller, you use a tag (alphanumeric name) to address data (variables). Term Definition Tag A text-based

Chapter 2 Organize tags Example: Tags Item Description Analog I/O Device Integer Value Storage Bit Counter Timer Digital I/O Device The tag type

Organize tags Chapter 2 Term Definition Data type The data type defines the type of data that a tag stores, such as a bit, integer, floating-poin

Chapter 2 Organize tags The minimum memory allocation for a tag is four bytes. When you create a tag that stores data that requires less than four

Organize tags Chapter 2 When you create a tag, you define it as either a controller tag (global data) or a local tag for a specific program (local

Chapter 2 Organize tags • Routines cannot access data that is at the local scope (local tag) of another program.• You can reuse the tag name of a

Organize tags Chapter 2 Program parameters are similar to tags: • You create program parameters at the program level, and use them tomanage data.•

Chapter 2 Organize tags Guideline Details Use arrays to quickly create a group of similar tags An array creates multiple instances of a data typ

Organize tags Chapter 2 Guideline Details These tags are easier to read Than these tags Tank_1 TANK_1 Tank1 TANK1 tank_1 tank1 Consider the al

Summary of changes This manual contains new and updated information. The following table contains the changes made to this revision. Change Topic Upd

Chapter 2 Organize tags Guideline Details Using extended properties in logic (continued) In the Function Block Editor, you can access extended

Organize tags Chapter 2 Guideline Details Using extended properties in logic (continued) • Array Tags are constrained A constraint on array tags

Chapter 2 Organize tags 1. In the Controller Organizer, right-click Controller Tags and then clickEdit Tags.p2. In the Tag Editor, from the Scope

Organize tags Chapter 2 2. If the Properties pane is not visible, click Properties.3. In the Properties pane, click Extended Properties, and select

Chapter 2 Organize tags Data Type Range DINT -2,147,483,648...2,147, 483,647 INT -32,768...32,767 LINT 0...32535129599999999 SINT -128...127

Organize tags Chapter 2 Item Description To expand a structure and display its members, click the + sign. To collapse a structure and hide its m

Chapter 2 Organize tags Example: Two-dimension array A drill machine can drill one through five holes in a book. The machine requires a value

Organize tags Chapter 2 Configure an array To create an array, you create a tag and assign dimensions to the data type. 1. In the Controller Organi

Chapter 2 Organize tags User-defined data types (structures) let you organize your data to match your machine or process. Example: User-defined

Organize tags Chapter 2 Example: User-defined data type that stores the data that is required to run a machine. Because several drill stations

Chapter 2 Organize tags Guidelines for user-defined data types When you create a user-defined data type, use the following guidelines. • If you i

Organize tags Chapter 2 4. Click Add Member to add a new data type member.5. In the member Name box, type a name for the data type member.6. In the

Chapter 2 Organize tags 1. In the Properties pane, click the box next to External Access, andselect an attribute.2. To display the value of the m

Organize tags Chapter 2 5. Select one or more properties that you want to add. The properties in the list depend on the selected data type or mem

Chapter 2 Organize tags In version 13 or later, the Logix Designer application lets you automatically build descriptions out of the descriptions i

Organize tags Chapter 2 Paste pass-through description—Use the data type and array description as a basis for more specific descriptions. In this

Chapter 2 Organize tags 3. Check Show Pass-Through Descriptions and Append to Base TagDescriptions.4. Click OK.Paste a pass-through description Ch

Organize tags Chapter 2 A tag name follows this format. Where Is Name Name that identifies this specific tag. Element Subscript or subscripts

Chapter 2 Organize tags The tags window displays alias information. Item Description drill_1_depth_limit is an alias for Local:2:I.Data.3 (a digi

Organize tags Chapter 2 The following logic was initially programmed by using descriptive tag names, such as stop and conveyor_on. Later, the tags

Table of Contents Studio 5000 environment...9 Additional resou

Chapter 2 Organize tags 3. In the cell, click .4. Select the tag that the alias represents.To Do This Select a tag Double-click the tag name.

Organize tags Chapter 2 Example: Step through an array. The timer_presets array stores a series of preset values for the timer in the next rung.

Chapter 2 Organize tags You can use these operators to specify the subscript of an array. Format your expressions as shown in the following table.

Organize tags Chapter 2 For more information on handling major faults, refer to the Logix5000 Controllers Major and Minor Faults Programming Manual

Chapter 2 Organize tags You can store project documentation for multiple languages in a single project file rather than in language-specific proje

Chapter 3 Force I/O Use a force to override data that your logic either uses or produces. For example, use forces to: • Test and debug your logic.• Ch

Chapter 3 Force I/O Disable or remove a force To stop the effect of a force and let your project execute as programmed, disable or remove the for

Force I/O Chapter 3 Force status indicator If your controller has a FORCE Status Indicator, use it to determine the status of any I/O forces. Impo

Chapter 3 Force I/O Use an I/O force to override: • An input value from another controller (that is, a consumed tag).• An input value from an inpu

Force I/O Chapter 3 Force an input value Forcing an input or consumed tag: • Overrides the value regardless of the value of the physical device o

Table of Contents Alias tags ... 4

Chapter 3 Force I/O To force a Do this BOOL value Right-click tag and then click Force On or Force Off. Non-BOOL value In the Force Mask column

Force I/O Chapter 3 4. Right-click a tag or element that has the force and then click RemoveForce.Disable all I/O forces To disable, on the Menu b

Chapter 4 Data access control In version 18 or later of the Logix Designer application, there are two tag attributes that allow you to control access

Chapter 4 Data access control • FactoryTalk Historian software.• Other third-party software.You configure external access from a menu when you cr

Data access control Chapter 4 Important: For alias type tags, the External Access list is unavailable. You are not allowed to change the externa

Chapter 4 Data access control 3. In the External Access list, choose an external access option.4. Click OK.66 Rockwell Automation Publication 1

Data access control Chapter 4 As shown in the following example, the External Access list is unavailable for an alias tag. There may be many alias

Chapter 4 Data access control 1. In the Tag Editor, right-click a tag and then click Edit (tag name)Properties.2. In the Tag Properties dialog box

Data access control Chapter 4 View and select external access status on the Tag Editor You can view the external access status of a tag in the Ta

Table of Contents Constant value tags... 76 Configure

Chapter 4 Data access control 1. In the Tag Editor select the alias tag, and then on the Logix Designerapplication Menu bar, click Search > Go

Data access control Chapter 4 Dialog Box/Window Considerations New Tag The External Access list is unavailable if: • The tag is an alias tag. •

Chapter 4 Data access control 1. In the Controller Organizer, right-click the data type and then clickProperties.2. In the Data Type editor, click

Data access control Chapter 4 • If the member’s data type is User-defined and the child-member has adifferent external access level from its par

Chapter 4 Data access control You can configure the external access of an Add-On Instruction’s parameters and local tags in the Add-On Instructio

Data access control Chapter 4 Dialog Box/Window Considerations Add-On Instruction Definition - Parameters Tab The External Access column is unav

Chapter 4 Data access control Only tags with external access settings of Read/Write or Read Only can be mapped to a PLC-2 controller and PLC-5/SL

Data access control Chapter 4 Use FactoryTalk security to control who is permitted to change values of constants and who can change the constant a

Chapter 4 Data access control 2. In the New Tag dialog box, in the Type list, choose a tag type.3. Select the Constant check box.4. Click Create.S

Data access control Chapter 4 2. In the Parameter/Local Tag Properties dialog box, select the Constantcheck box.3. Click OK.See Constant check box

Chapter 4 Data access control 1. In the Controller Organizer, right-click Controller Tags and then clickEdit Tags.In the Tag Editor, select the ch

Data access control Chapter 4 Dialog Box/Window Considerations Tag Monitor You can change the value of a constant tag in the Tag Monitor if yo

A access external 63 add extended properties to a tag 32 add extended properties to user-defined data type 42 Add-On Instruction constant value c

Index tag description 44 user-defined data type 44 E electronic keying electronic keying 17 enable force 55 exact match electronic keying 16

Index O ownership I/O module 14 P pass-through description 44 program parameters 12, 19, 25, 27 tags 25 program parameters 12, 19, 25, 27 pr

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Preface This manual shows how to access I/O and tag data in Logix5000 controllers. This manual is one of a set of related manuals that show common pr