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4.4.Client Side Map Descriptors
4.4.1.FieldServer Related Map Descriptor Parameters
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| Map_Descriptor_Name |
| Name of this Map Descriptor |
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| One | of | the | Data |
| Data_Array_Name |
| Name of Data Array where data is to be |
| Array | names | from | |
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| stored in the FieldServer |
| “Data |
| Array” | ||
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| section above |
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| 0 to | maximum | ||
| Data_Array_Offset |
| Starting location in Data Array |
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| Array” |
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| above |
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| Function of Client Map Descriptor. |
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| Refer to the FieldServer configuration |
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| Function |
| information for more information. Note |
| Server, passive | |||
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| that passive client means that the map |
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| descriptor owns the Data Array |
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| elements and no other active Map |
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| Descriptor can address the same data. |
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4.4.2. |
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| Driver Related Map Descriptor Parameters |
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| One of the node names | ||
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| Node_Name | Name of Node to fetch data from |
| specified | in “Client Node | ||||
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| Descriptor” above | ||
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| Data type |
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| Your choice affects how data is stored. |
| Ana_Input , Ana_Output , | |||
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| If you use a Digital type then data is |
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| Data_Type |
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| Register | , Float_Reg , | ||||
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| stored only as 1’s or Zero’s. If you use |
| Dig_Input | , Dig_Output | ||
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| non Float types the values are truncated. |
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| Thus 0.6 is stored as zero. |
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| Length of Map Descriptor |
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| Specifies the maximum number of string |
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| items that can be converted to numbers |
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| Length |
| and stored. |
| 1,2,3… |
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| Other than ‘using up’ point count, there is |
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| no danger in setting the length to a larger |
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| number than required. |
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| Address |
| This commonly used parameter is not |
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| used by this driver. |
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