Rockwell Automation 1764-xxxx MICROLOGIX 1500 PROGRAMMABLE CONTROLLERS - Manual (Page 98)

Publication 1764-UM001B-EN-P - April 2002
5-6 Using Trim Pots and the Data Access Tool (DAT)
Entering Bit Mode
Bit mode allows you to view and modify up to 48 contiguous bit
locations in the controller. The DAT enters the bit mode automatically
following a successful power-up. The bit mode can also be selected
by pressing the BIT key. If the bit mode was previously active, the
DAT displays the last bit element monitored. If the integer mode was
active, the DAT displays the first bit element in the data file. However,
there may be a brief delay while the DAT requests information from
the controller. During the delay, the working screen will display. See
Working Screen Operation on page 5-7.
Entering Integer Mode
Integer mode allows you to view and modify up to 48 contiguous
16-bit integer data locations in the controller. To initiate integer mode,
press the INT key. If the integer mode was previously active, the DAT
displays the last integer element monitored. If the bit mode was
active, the DAT displays the first integer element in the data file.
However, there may be a brief delay while the DAT requests
information from the controller. If there is a delay, the working screen
is displayed. See Working Screen Operation on page 5-7.
Monitoring and Editing
1. Press the INT or BIT key to enter the desired mode. The element
number flashes (if not protected).
2. Use the up/down key to scroll and select an element (to scroll
rapidly, hold the up/down key).
3. Press ENTER to edit the element. The element number becomes
steady and the data flashes if it is not protected.
4. Use the up/down key to change the data. Bit values toggle
between “ON” and “OFF”. Integer values increment or
decrement. Holding down the up/down key causes the integer
value to increment or decrement quickly.
TIP
If the data is protected or undefined, pressing
the up/down key scrolls to the next element in
the list.