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FS-8700-105_National_Time_and_Signal_FACP Manual Page 8 of 25
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Length
Length of Map Descriptor. Specifies the number
of ports processed by the MD.
Thus if address is 1 and length is 10 the Map
Descriptor processes ports 1... 9 inclusive.
1, 2, 3 etc.
Ensure that the
length added to the
offset is no greater
than the Data Array
length.
Sub-Port-
Type
Set this parameter to ‘None’ to store data for a
range of ports which do not have sub-ports. To
store data for a specific port, set the sub-port type
appropriately. If the sub-port-type is ‘Other’, it
must be specified in the configuration file as
‘S(Other)’ or 'S'. Only the first character is used,
therefore the configuration may omit the rest of
the term (e.g. it is sufficient to specify ‘I’ for
‘Input’)
Input; Output;
Fault; S(other);
None
Sub-Port May be omitted if sub-port-type=None. 1,2,3 etc
4.1.3. Timing Parameters
Scan_Interval
This commonly used parameter has no meaning for this
driver as the driver is a passive client driver and does not
poll for data.