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6.6.3.Map Descriptors Example
Only two Map Descriptors are allowed, one to transfer data to the Logix CPU and one to accept data from the Logix CPU.
// Server Side Map Descriptors |
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Map_Descriptors |
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Map_Descriptor_Name, | Scan_Interval, | Function, | Node_Name, | IO_Data_Type, | DA_Name_Start4, | DA_Count, | Protocol_Type_ID |
Input_BP_Image, | 0.2s, | WRBC, | SlotServer_CPU, | REAL, | In_1, | 2, | 0 |
Output_BP_Image, | 0.2s, | RDBC, | SlotServer_CPU, | REAL, | Out_1, | 2, | 0 |
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The following Data Arrays section must exist for the above Map Descriptors:
// Data Arrays |
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Data_Arrays |
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Data_Array_Name, | Data_Format, | Data_Array_Length |
In_1, | Float, | 76 |
In_2, | Float, | 76 |
Out_1, | Float, | 76 |
Out_2, | Float, | 76 |
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The data format should be chosen to allow no loss of resolution with the chosen IO_Data_Type of the Map Descriptor, e.g. don’t use integer here if you intend transferring float data.
See the Data Arrays section for the maximum Data Array lengths allowed per IO_Data_Type chosen on the Map Descriptor.
4Refer to Appendix A.6 for information specific to naming Logics driver Data Arrays.
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