FieldServer FS-8700-52 - Manual (Page 10)

FS-8700-52 Notifier AM6000 Driver Manual
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Page 8
4.4.4 Map Descriptor Example.
Map_block_Name, scan_interval, Data_Array_Name, Data_Array_Offset, Function, node_name, AM6000_TypeID, Address , Length , am6000_Ackable
DEVICES_100_199, 1.0s, DEVICE_STATES_LOOP1, 0, passive, node_a, device-only, 500 , 100 , Yes
Name of the data
array that will be
updated when this
map descriptor is
used. The position in the data
array that corresponds to
device whose number is
equal to the Address
Parameter.
In this example device
500's state will be strored
in the 0th element of the
data array called
DEVICE_STATES_LOOP1
All map
descriptors for the
AM6000 Notifier
driver must be
passive.
This keyword indicates that
this map descriptor will only
be used to process device
state messages. This makes
the address and length
parameters very important.
Connects this
map descriptor
to a node
whose name is
'node_a' and
thus connects
the map
descriptor to a
port.
The device address of the first
device to be processed by this map
descriptor. Devices are allocated to
loops. The device address consists
of a mmnn format where mm is the
loop number and nn is the device
number.
In this example the address is set to
500 this indicated that the first
device to be processed by this map
desc. Is on loop 5 and is device
zero.
The range of
device address is
determined by this
parameter.
Because address is
500 and length is
100 in this
example all
devices 500 to 599
will be
Processed using
When a Block
Acknowledge or System
Reset message is received
the driver will set the
portion of the data array
DEVICE_STATES_LOO
P1 starting at
Data_Array_Offset for
Length number of
elements to zero.