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5.4.Server Side Map Descriptors
5.4.1.FieldServer Specific Map Descriptor Parameters
Column Title | Function | Legal Values | |
Map_Descriptor_Name | Name of this Map Descriptor | Up to 32 alphanumeric characters | |
Data_Array_Name | Name of Data Array where data is | One of the Data Array names from | |
to be stored in the FieldServer | “Data Array” section above | ||
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Data_Array_Location | Starting location in Data Array | 0 to maximum specified in “Data | |
Array” section above | |||
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Function | Function of Client Map Descriptor | passive |
5.4.2.Driver Specific Map Descriptor Parameters
Column Title | Function |
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| One of the Node Names | |||||
Node_Name | Name of Node to fetch data from | specified in “Server |
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| Node Descriptor” above | |||||
Length6 | Length of Map Descriptor. When reading a |
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compete table, set to the maximum number of | 1 – 1000 |
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| data values to be stored. |
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| The name of the table to be polled, e.g. |
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| DISPLAY. This parameter is for display purposes |
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| only. The driver does not use the value of this | Only Ascii characters are | |||||
| parameter. | permitted. |
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| Some system elements have multiple instances | When using the table | |||||
Table_Name* | of the same table name. For example, the | ||||||
Terminal System Manager has 64 Temperature | name parameter to |
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| specify a primary and | ||||||
| Zone configuration tables. The individual tables | ||||||
| are named TZONE1 though TZONE64. These | secondary table, leave a | |||||
| tables are accessed by using both the primary & | single space between | |||||
| secondary table names. | the two names. |
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| E.g. ‘TZCONF TZONE1’ |
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| An | Ascii | string | which | ||
Field_Name | This is the field variable pneumonic. | may not contain spaces. | |||||
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| Max length 8 characters. | |||||
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| An | Ascii | string | which | ||
Field_Description | Returned when a Client does a read. | may contain | spaces. | ||||
Max | length | 24 | |||||
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Field_Units | Returned when a Client does a read. If units | A | whole | number. | See | ||
have no meaning for the variable set to zero. | Appendix A.1 |
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| This parameter is used to set data quality |
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| information that is returned when the Client polls | A | whole | number. | See | ||
Field Status* | for data. If omitted and DA_Byte_Name has not | Appendix | A.1 | for | more | ||
| been specified the driver returns zero as the | information. |
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| status value. |
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6Additional information on the length parameter is provided in Appendix A.
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