Learning targets
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Learning targets. The participant should ... ...Understand the difference between absolute and symbolic addressing ...Understand the difference between local and global symbols ...Be able to watch global symbols in the PLC tag table ...Be able to edit a global symbol table.

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Learning targets

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Learning targets

Learning targets

The participant should ...

...Understand the difference between absolute and symbolic addressing

...Understand the difference between local and global symbols

...Be able to watch global symbols in the PLC tag table

...Be able to edit a global symbol table


Plc tags local tags

PLC tags / local tags

PLC tagsLocal tags

Scope of validity• Validthroughout the complete CPU• Only valid within the block in

• Can be used by all blocks which they have been defined

• The designation is unique• The same designation can be within the CPU used in different blocks for different purposes.

Application• PLC tags • Local tags - I/O signals - Block parameters - Bit memories - Static data of a block - Temporary data

Location of • PLC tags table• Block interface

definition

Representation• PLC tags are presented in• Local tags are presented quotation marks preceded by # Example: "Max" Example: #Niels


Use tag as operand

Use tag as operand


Create plc tags with group functions

+

Create PLC tags with group functions


Find replace plc tags

Find / replace PLC tags


Sort plc tags

Sort PLC tags

With a mouse click in the first row of the "Name" column, the table is sorted according to name.


Monitor plc tags

Monitor PLC tags

Monitor allon / off


Plc tags retentive memory areas

PLC tags: Retentive memory areas


Plc tags general properties

PLC tags: General properties


Plc tags fault

PLC tags: fault

This address is already used by another tag

The entered address does not correspond to the data type of the tag

If the name already exists in the table, a "_1" is automatically appended.


Block editor show hide symbolic

Block editor: Show/hide symbolic


Block editor symbol selection

Block editor: Symbol selection

The selection of symbols offered is intelligently restricted after each letter is entered to the corresponding symbols of the PLC tag table and the local tags


Block editor rename individual tag

Block editor:Rename individual tag

The changes take immediate effect throughout the entire program.


Block editor rewire individual tag

Block editor:Rewire individual tag

The changes take immediate effect throughout the entire program.


Exercise 5 1 copy plc tags for conveyor model from global library

Exercise 5-1: Copy PLC tags for conveyor model from global library

Drag and drop


Exercise 5 2 complete plc tags for conveyor model

Exercise 5-2: Complete PLC tags for conveyor model

"Horn"

(Q 8.7)

"K_Conv_RIGHT" (Q 8.5)

"K_Conv_LEFT" (Q 8.6)

"Bay1"

(I 8.5)

"Bay2"

(I 8.6)

"Bay3"

(I 8.7)

"LB"

(I8.0)

"T_Bay1"

(I 8.1)

"T_Bay2"

(I 8.2)

"T_Bay3"

(I 8.3)

"T_Bay-LB"

(I 8.4)

"L_Bay1"

(Q 8.1)

"L_Bay2"

(Q 8.2)

"L_Bay3"

(Q 8.3)

"L_Bay-LB"

(Q 8.4)


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