Driver Manual
4.4Client Side Map Descriptors
4.4.1FieldServer Specific Map Descriptor Parameters
| Column Title | Function | Legal Values |
| Map_Descriptor_Name | Name of this Map Descriptor | Up to 32 alphanumeric |
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| characters |
| Data_Array_Name | Name of Data Array where data | One of the Data Array names |
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| is to be stored in the | from “Data Array” section |
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| FieldServer | above |
| Data_Array_Location | Starting location in Data Array | 0 to maximum specified in |
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| “Data Array” section above |
| Function | Function of Client Map | RDBC, WRBC, WRBX, |
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| Descriptor | Passive |
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| The use of the WRBX keyword |
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| is recommended for DART |
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| configurations as |
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| communications are minimized. |
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4.4.2 Timing Parameters |
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| Column Title | Function | Legal Values |
| Scan_Interval | Rate at which data is polled | >0.1s |
4.4.3Driver Specific Map Descriptor Parameters
| Column Title | Function | Legal Values |
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| Node_Name | Name of Node to fetch data | One of the node names |
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| from | specified in “Client Node |
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| Descriptor” above |
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| Length | Length of Map Descriptor | 1 The length must always be |
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| set to one. |
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| Address | Starting address of read block | Not required for client |
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| configuration. This parameters |
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| is used in simulation |
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| configuration only. |
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| The following parameters apply only to the Dart Driver. |
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| DA_Func* | Tell the driver to poll the device | Everything |
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| for all the data that is available. |
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| The data is device specific. | See table 4.4.3.1 for a map of |
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| how the data is stored in the |
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| Other uses of this parameter are | Fieldserver data arrays |
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| permitted. These uses are |
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| discussed in the Advanced |
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| Topics section of this manual. |
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