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FS-8700-17 Optomux Driver Manual
FieldServer Technologies 1991 Tarob Court, Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042
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Page 16
4.4.10 Map Descriptor Example 7 – Specifying Module Positions Dynamically
Previous examples addressed module positions statically. This example illustrates how you can use a data array’s value to specify the module position’s to be
affected by a command. As data arrays can have their values changed by remote devices, the module position specification may be changed dynamically. The
CSV file does not require editing. This method can be used all the time or only if you wish to use one of those commands which would typically require dynamic
addressing.
In this example, module positions 1 and 5 are pulsed.
Map_Descriptor_Name, Data_Array_Name, Data_Array_Offset, Function, Node_Name, Length, Scan_Interval, DA_Bit_Name , opto22_function
CLRLOW77 , LOW_ARRAY , 0 , wrbc , DEV77 , 16 , 10.0s , POS_ARR , READ AND CLEAR LOWEST VALUES
This data array will be used by
the driver to determine the
module positions to be affected
by the command.
The driver uses the length
(max=16) and the
Data_Array_Offset. The first
specified element corresponds to
module position 1. If its value is
non-zero then the position is
specified by the driver.
Any number 1 to 16.
The driver stops at
16, ignoring larger
values.
In this example, the driver will store 16 lowest values in an array
called LOW_ARR starting at position Data_Array_Offset.