Siemens S7-300 - Page 131

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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
A5E00203919-01
9-19
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In the VAT, every address to be monitored or modified (e.g. inputs, outputs)
occupies one row.
The meaning of the VAT columns is as follows:
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Operand contains the absolute address of the variable
Symbol contains the symbolic descriptor of the variable
This is identical to the specification in the Symbol Table.
Symbol comment shows the symbol comment of the Symbol Table
Status format contains the default format setting, e.g. HEX
You can change the format as follows:
• Right-click on the format field. The Format List pops up.
or
• Left-click on the format field until the desired format appears
Status value shows the content of the variable at the time of update
Control value is used to enter the new variable value (control value)
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You have two options for monitoring variables:
• updating the status values once via menu item 9DULDEOH!8SGDWHVWDWXV
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or
• continuous update of status values via menu item 9DULDEOH!0RQLWRU