Siemens SINUMERIK 840D sl Function Manual

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14.6.1.7 Job evaluationKey statementThe variable-specific result interface must be evaluated for each variable processed in the job.DB120x 1) NC services (NC → PLC)DBB3000 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0Error has oc‐curredVariable val‐idDBB3001 Access result (see "Access result" below)DBW3002 ---DBD3004 Read: Data from NC variable x (data type of the variables: 1…4 bytes)2)DBD3008 ---DBD3012 ---DBD3016 Read: Data from NC variable x (REAL)3DBD3020 Read: Data from NC variable x (DWORD / DINT)3)DBW3024 Read: Data from NCK variable x (WORD / INT)3)DBB3026 Read: Data from NCK variable x (BYTE)3)DBB3027 --- --- --- --- --- --- --- Read:Data fromNC variablex 3)1) DB120x, with x = 0 ... 7 corresponds to variable 1 ... 8.2) Only for predefined variables of the "Read/write NC variable" user interface3) Only for variables from DB9910 NC_DATANoteChannel-specific variablesWhen reading/writing channel-specific variables, only the variables of exactly one channel maybe addressed in a job.Drive-specific variablesWhen reading/writing drive-specific variables, only the variables of exactly one SERVO driveobject may be addressed in a job. The SERVO drive object must be assigned to a machineaxis of the NC. The line index corresponds to the logical drive number.Error caseIn the event of an error, reading/writing variables from different drive objects, or simultaneouslyfrom a channel and a drive object, an error message is output:DB1200.DBX3000.1 == 1 (error occurred)P4: PLC for SINUMERIK 828D14.6 Function interfaceBasic FunctionsFunction Manual, 01/2015, 6FC5397-0BP40-5BA2 1105