Siemens SIMATIC S7-200 System Manual page 390

S7-200 Programmable Controller System Manual
Defining the Data Log
You specify the fields for the data log and each field becomes a symbol in your project. You must
specify a data type for each field. A data log record can contain between 4 and 203 bytes of data.
To define the data fields in the data log, follow the steps below. See Figure 14-3.
1. Click on the Field Name cell to
enter the name. The name
becomes the symbol referenced
by the user program.
2. Click on the Data Type cell and
select a data type from the drop
down list.
3. To enter a comment, click on the
Comment cell.
4. Use as many rows as necessary to
define a record.
5. Click OK .
Edit Existing Data Log Configuration
To edit an existing data log configuration,
follow the steps below:
1. Click on the configuration
dropdown list and select an
existing data log configuration as
shown in Figure 14-4.
2. To delete an existing data log
configuration, click on the Delete
Configuration button.
You can have up to four different data
logs.
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Figure 14-3 Defining the Data Log Record
Figure 14-4 Edit Existing Data Log Configurations