FieldServer A Sierra Monitor Company FS-8700-123 - Manual (Page 13)

FS-8700-123 MetOne Particle Counter Driver Manual Page 13 of 22
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5.9 Map Descriptor Example 6 – Select Device
Device selection is handled automatically by the driver and support for this message is provided mainly for testing purposes. The driver uses the Node_ID
parameter to learn the address/number of the device to be selected. Valid numbers are in the range 1...64. When the device responds, the driver stores the
device number in the Data Array element specified in the configuration.
// Client Side Map Descriptors
Map_Descriptors
Map_Descriptor_Name , Data_Array_Name , Data_Array_Offset , Function , Node_Name , Met1_Function , Length
Select Device
, DA_MODE_CTRL , 0 , Wrbx , MET1 , Device Select , 1
Set length to 1 for this
Met1_Function The Node_Name connects this Map Descriptor to the Node Descriptor
and that is where the driver finds the Node_ID parameter.