Siemens SIMATIC S7-1200 Manual

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4 Mode of Operation4.5 Data logging - blocksWeighing, Controlling and Logging (Set 6)Entry ID: 82454336, V2.0, 10/2017 29 Siemens AG 2017 All rights reserved4.4.3 “Tags” data blockThe “tags” data block includes the tags for transmitting the function blocks andfunctions to the interfaces.The following table shows the tags that have been provided with deviating startvalues in the example project.Table 4-8Name DatatypeStartvalueDescriptionDataLog.Enable Bool true Enable of “DataLog” FB (false =blocked, true=enabled)DataLog.RECORDS UDInt 1000 Number of data records in the data logDataLog.NAME String 'DataLog' Name of the data log file4.5 Data logging - blocksTo record the production data, the following blocks are used: “Copy” function “DataLog” function block “Time” function4.5.1 “Copy” functionThe “copy” FC only collects all required data that is to be written into the DataLogfile and transfers it to the “DataLog” FB.The call of the “copy" FC is in OB1.Figure 4-10