Variable Table - Siemens TX-I/O User Manual

Error indications
Definition, addition
Requirements
Syntax
Step-by-step procedure
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4. Symbol text box: Enter the symbol name
Recommendation: select short, concise, meaningful names (useful for
input into the variable table)
5. Address text box: enter the address in the appropriate syntax
See the Syntax table further below
The entry of the address (column: example) is not critical in terms of the
writing style – for example, E8.6 can be entered, but so can also E<space>8.6
6. Address text box: exit the box (click with the mouse cursor anywhere else)
The box on the right ("Data type" column) is automatically filled in, but can
be adjusted manually.
7. Save (menu Table > Save)
8. a. Table > Close (after entering the desired data points)
If the table was not saved beforehand, a security prompt is issued here.
b. Reply to the security prompt as appropriate.
After exiting a box, different error indications are possible – for example, in the
Status column. The indications disappear when the corresponding errors are
corrected. Example of the Status column:
Symbol Cause
Two identical symbol names available
Symbol name or address missing
3.3.5

Variable Table

3.3.5.1 Creating a Variable Table
Block for displaying or editing the attributes of the current module.
System attributes and user-defined attributes control and coordinate functions
between individual application for reading/writing controller input, output and local
data. All I/O address data entered in this table can be monitored and/or edited.
In order that the variable table can be created and used, specific requirements

must be fulfilled:Defined device name in TX-I/O BIM
If you want to work with symbols, they must previously have been created in the

symbol table
Operand Description
E Input bit
A Output bit
EB Input byte
AB Output byte
EW Input word
AW Output word
PEW Process input word
PAW Process output word
ED Input
AD Output
PED Process input
PAD Process output
1. SIMATIC Manager, left screen section: Blocks > menu: Insert > S7 block
Insert new object > subcontext menu: Variable table.
TX-I/O PROFINET BIM V1.0
Engineering
Correction
Change one of the symbol names
Enter the corresponding parameter
Format Example
BOOL E 8.6
BOOL A 30.1
BIN EB 10
HEX AB 11
DEC EW 100
DEC AW 120
DEC PEW 1000
DEC PAW 1020
FLOATING ED 20
POINT
FLOATING AD 30
POINT
DEC PED 1500
DEC PAD 1600
Note
The values must
be entered without
blanks (etc.)
between the
operand and
value (unlike the
symbol table).
CM110564en_02
23.09.2010