Map Descriptor Example 1 - Store Data From Incoming Messages - FieldServer Gamewell FS-8700-83 Driver Manual

FS-8700-83 Gamewell
Map Descriptor Example 1 – Store data from incoming messages.
This example illustrates typical map descriptor uses to store data from panel generated messaged.
As all these map descriptors have their Clear_On_Reset field set to yes, when a panel reset message is received all the data in the controlled
arrays will be set to zero When a point reports its own state as normal the driver will set the appropriate element of the appropriate array to zero
to indicate the normal state..
Data is stored, first by finding a map descriptor with the correct circuit number. If the message doesn't contain a circuit number then it is assumed
to be from the panel itself. If a message contain a CKT number and no DEV number then the driver assumes the device number is zero. The
storage location is based on the device number – it is used as an offset into the array.
Map_Descriptors
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, Node_Name, ckt
Panel_data , DA_STATUS
Ckt1_data01 , DA_STATUS
Ckt2_data01 , DA_STATUS
Ckt3_data01 , DA_STATUS
In this example all the
data for all these
circuits is stored in one
array.
The offset is used to
control the location in
the array.
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, 000 , passive , panel1
, 200 , passive , panel1
, 400 , passive , panel1
, 600 , passive , panel1
These map descriptors You need one map
are all passive. We descriptor for each
cannot poll the panel circuit / panel.
but we can wait
passively for the panel
to send us messages.
Page 8 of 24
, Dev, Length, Data_Type , Clear_On_Reset
, Panel, 0 ,100 , Any
, 1 , 0 ,100 , Any
, 2 , 0 ,100 , Any
, 3 , 0 ,100 , Any
The length determines
the number of devices
that can be processed
using the map
descriptor.
Say a message for
Ckt:2 Dev:20 is
received. The driver
looks at the device
number and the length
to see if the range of
devices covers the
incoming message. I
this case the data
would be stored at
offset 20 in the map
descriptor.
, Yes
, Yes
, Yes
, Yes
Because the Data Type
is 'Any' the driver will
set an array element
non-zero if any
messages indicate that
the point in not in a
normal condition.