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5.5.Server Side Map Descriptors
Map Descriptors control when and how data is transferred to or from the card buffers for an external Profibus Master to access.
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| Map_Descriptor_Name |
| Name of this Map Descriptor |
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| Up to 32 alphanumeric characters |
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| Data_Array_Name |
| Name of Data Array where data is to be stored in | One of the Data Array names from “Data Array” | |||||||||||||||||||
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| Data_Array_Offset |
| Starting location in Data Array |
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| 0 to maximum specified in “Data Array” section | |||||||||||||||
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| Function |
| Function of Server Map Descriptor |
| RDBC, WRBC |
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| Node_Name |
| Name of DP Server Node |
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| The node name specified in “Server Side Nodes” | |||||||||||||||
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| Data_Type |
| Data type |
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| FLOAT, WORD, BYTE, BIT |
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| DP_Buffer |
| Specify buffer in the DP card being accessed. |
| Input, Output |
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| Address |
| Address in | DP_Buffer | being accessed, |
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| expressed in byte offset |
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| Note: When using Data_Type BIT, the address is | ||||||||||||||||
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| in bit eg. from 0 - 1951 |
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| Length |
| Number of points in DP_Buffer being accessed, | 1- 1952, depending on Data_Type |
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| expressed in points defined by Data_Type |
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| means that 10*2 = 20 bytes are used in the buffer | ||||||||||||||||||
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| Example |
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| // Server Side Map Descriptors |
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| Map_Descriptors |
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| Map_Descriptor_Name, |
| Data_Array_Name, |
| Data_Array_Offset, | Function, |
| Node_Name, |
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| DP_Type, |
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| DP_Buffer, |
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| Address, |
| Length |
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| FLOAT_IN_01, |
| DA_FI_01, |
| 0, |
| RDBC, |
| PDP_01, |
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| FLOAT, |
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| Output, |
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| 0000, |
| 20 |
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| INT_IN_01, |
| DA_AI_01, |
| 0, |
| RDBC, |
| PDP_01, |
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| WORD, |
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| Output, |
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| 0080, |
| 20 |
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| BYTE_IN_01, |
| DA_BI_01, |
| 0, |
| RDBC, |
| PDP_01, |
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| BYTE, |
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| Output, |
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| 0120, |
| 20 |
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| BIT_IN_0,1 |
| DA_DI_01, |
| 0, |
| RDBC, |
| PDP_01, |
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| BIT, |
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| Output, |
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| 0140, |
| 32 |
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| FLOAT_OUT_01, |
| DA_FO_01, |
| 0, |
| WRBC, |
| PDP_01, |
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| FLOAT, |
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| Input, |
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| 0000, |
| 20 |
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| INT_OUT_01, |
| DA_AO_01, |
| 0, |
| WRBC, |
| PDP_01, |
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| WORD, |
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| Input, |
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| 0080, |
| 20 |
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| BYTE_IN_01, |
| DA_BO_01, |
| 0, |
| WRBC, |
| PDP_01, |
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| BYTE, |
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| Input, |
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| 0120, |
| 20 |
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| BIT_IN_01, |
| DA_DO_01, |
| 0, |
| WRBC, |
| PDP_01, |
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| BIT, |
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| Input, |
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| 0140, |
| 32 |
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FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web:www.fieldServer.com Tel: (408)