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4.6Map Descriptor Example: Write Controls
The following Map Descriptor will write controls to physical Server Genisys_01 and Genisys_02 (described in Client Side Node Descriptors section) whenever any of the control statuses changes/updates. One such Map Descriptor is required per Node.
If Data_Type is Byte, 32 consecutive locations from the Data Array will be written to VHLC. Data at any location would be considered as one control word.
If Data_Type is Bit, 256 consecutive locations from the Data Array will be written to VHLC. Data at 8 consecutive locations would be considered as one control word.
Also see Appendix A.1.
// Client Side Map Descriptors |
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Map_Descriptors |
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Map_Descriptor_Name ,Scan_Interval ,Data_Array_Name ,Data_Array_Offset | ,Function | ,Node_Name | ,Data_Type | ,Address | ,Length | |||
CMD_01b | ,- | ,DA_8O_01 | ,0 | ,Wrbx | ,Genisys_01 | ,Byte | ,0 | ,32 |
CMD_02 | ,- | ,DA_DO_01 | ,0 | ,Wrbx | ,Genisys_02 | ,Bit | ,0 | ,256 |
Name of one of
the Data Arrays | Starting offset | |
in the Data | ||
defined in | ||
Array which | ||
Data_Array | ||
holds the 1st | ||
section. This | ||
control status. | ||
Data Array holds | ||
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control statuses |
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to be written to |
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other devices. |
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Wrbx: send write command to the Server when the associated Controls updates or changes. To write continuously use Wrbc as the function and add a Scan_Interval parameter to configure how often to write.
One of the | Number of consecutive |
Nodes declared | locations in the Data |
in the Node | array to use when |
Section. | issuing the Write |
Indications will | command. |
read from the |
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station address |
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belonging to this |
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Node |
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