Appendix a. useful features, Appendix a.2. poll data length – FieldServer Gardner Denver FS-8700-60 User Manual
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FS-8700-60 Gardner Denver Manual
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Appendix A. Useful Features
Appendix A.1. Method used to Isolate Specific Items
A Passive_Client Map Descriptor must be used after an active RDBC Map Descriptor. The driver uses the Active
Map Descriptors to poll the Controller and then searches for Passive Client Map Descriptors with matching
Node_Name and Gar_Cmd fields. It then stores the data items as specified by the Gar_data field from the data
collected by the preceding active Map Descriptor.
Appendix A.2. Poll Data Length
The length of the data packet retrieved from the Controller during a poll is always fixed for each of the three types
of data polls. When specifying a specific Gar_Data item using a RDBC active Map Descriptor, the driver receives all
data of Gar_Cmd type from the controller in a single poll, but only stores the data item in question.