Concept V2.5
Lesson 12 Objectives:After completing this lesson, the learner will be able to:
• Describe the difference between Located and Unlocated Variables.• State the rules for Variable naming• Use the Variable Editor to create and or delete Variables.
Lesson OverviewConcept Software uses the idea of named Variables and Constants in it’s programming structure in order to contain global data that needs to be passed between objects. The use of these named Variables eliminates the need to physically join objects together through the use of links.
This lesson will explain Variables and Data Types, the naming of Variables, hardware addressing and the difference between using or not using hardware addresses with Variable names.
Concept V2.5
Each Variable has to be declared with the Variable Editor before using it:Either independently with Project
Variable declaration… [F8]Or during programming with a double-click
on an input / output assignment.
A data type must be assigned to each Variable. CONCEPT software provides elementary and derived data types
Concept V2.5
Common Data Types and Ranges
• BOOL Must be a ON ( 1 ) or OFF ( 0 )• WORD Represents a “bit string 16”,
meaning the length of data is 16 bits. • INT Represents an integer value.
The range of values are -32768 through 32767
• UINT Represents an unsigned integer value. The range of values are 0 through 65535
• REAL Represents a floating point value. The range of values are 8.43e-37 through 3.36e+38
Concept V2.5
Entering Literal ValuesLiteral values are used to assign values to pins, or
to assign constants to variables, and are not meant to be changed by the program.
You can enter literal values as base 2 (binary) 2#1111111111111111
base 8 (octal) 8#177777
base 10 (decimal) 65535 (no 10# needed)
base 16 ( hex) 16#FFFF
All of the above values are equal, they were just entered differently
Concept V2.5
Variable names: • Max. length 32 characters, may start with number
Unlocated:• Tag name without a hardware address.• Implemented in the code, so it´s faster
than a located variable.
Located:• Tag name with a hardware address. (State RAM.)• Not implemented in the code, so it´s
not as fast as a unlocated variable.
Constants:• Used to define value to a tagname,
e.g., Hi_Temp = 103.7• They cannot be located.
State-RAM
DDI...
DDO...
AVI...
AVO...
3x
4x
HW
I/O Map Ranges
1x
0x
1:1 - 1:32
0:1 - 0:32
3:1 - 3:8
4:1 - 4:4
1:1
0:1
3:1
4:1
Motor_On
Valve_Ctrl
Variable List Program
Variable declarations
Time1
Time2
Logic_InterlockStart_PB
Tank_Level
FFB
FFB
Level_Limit
Unlocated VariablesLocated Variables
Concept V2.5
Configuration, Addressing and Variable Assignments
Concept V2.5 Direct Addressing
Every direct address has a reference that indicates it’s position in the sequence and whether it is an input address (read only) or an output address (read / write).
• 0x / %QXx area = bit outputs (discrete), example 1: 000001 is discrete Output 1example 2: %QX00001 is Output Bit 1
• 1x / %IXx area = bit inputs (discrete), example 1: 100017 is discrete Input 17example 2: %IX00017 is Input Bit 17
• 3x / %IWx area = register inputs, example 1: 300300 is register input 300
example 2: %IW000300 is Input Word 300• 4x / %QWx area = register outputs,
example 1: 400029 is register output 29example 2: %QW00029 is Output Word
29
Concept V2.5
Variable Editor
Identifier Data Type
Unlocated Variable
Located Variable
# times used in program
Sort by:Name, Data Type, or Address
Click & Drag here
Paste here
Concept V2.5
Create New Variables by Copying
Rename the newly created variables
Concept V2.5
Search/Paste Dialog
Concept V2.5
Search/Replace Dialog
Concept V2.5
It is possible to change online without stopping the CPU:Variable Names Reference Addressesunlocated to located addresses and vice versa
Changed variables can be downloaded into the Quantum PLC with Download changes.
Concept V2.5
Variable Editor - Export Utility
Concept V2.5
Using Excel for Variables
Concept V2.5
Variable Editor - Import Utility
Concept V2.5
Variable Editor - Import UtilityVariable Import
Complete Import Selective Import
Sort ConstantsUnlocatedLocatedInput/Output available
for DFB
FilterBegins withContains
Concept V2.5
The Reference Data Editor
Concept V2.5
Reference Data Editor
Concept V2.5
Reference Data Editor Templates - Saving
Concept V2.5
Reference Data EditorAutomatically convert Concept V2.x to V2.5 format
Save as filename.RDF
New Templates are ASCII Text5 Variable attributesTag NameAddress (Reference Number)ValueSetValueDisplayFormat
(Hex,Dec,Binary etc)
RDE Templates can now be used for multiple Projects
Concept V2.5
Reference Data Editor Templates - Opening
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