Publication 1762-RM001C-EN-P
Function Files 3-9
DAT Function File
(MicroLogix 1500 only)
Data Access Tool (DAT) configuration is stored in the processor in a
specialized configuration file called the DAT Function File. The DAT
Function File, which is part of the user’s control program, is shown
below.
The DAT function file contains the Target Integer File, the Target Bit File,
and the Power Save Timeout parameter. These three parameters are
described in the table below.
Target Integer File (TIF)
The value stored in the TIF location identifies the integer file with which
the DAT will interface. The DAT can read or write to any valid integer file
within the controller. Valid integer files are N3 through N255. When the
DAT reads a valid integer file number, it can access the first 48 elements (0
to 47) of the specified file on its display screen. The next 48 bits (words
48 to 50) are used to define the read-only or read/write privileges for the
48 elements.
The only integer file that the DAT interfaces with is the file specified in the
TIF location. The TIF location can only be changed by a program
download.
Feature Address Data Format Type User Program
Access
Target Integer File DAT:0.TIF Word (int) Control Read Only
Target Bit File DAT:0.TBF Word (int) Control Read Only
Power Save Timeout DAT:0.PST Word (int) Control Read Only
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