Rockwell Automation 1747-DTAM-E,D17476.1 Data Table Access Module (DTAM) - Manual (Page 48)

5-14 Monitoring and Modifying Data
Publication 1747-6.1
How to Change the Sign of a Value
The [ ] key may be used to change the sign of signed integers
contained in the Counter or Integer data files.
• For example, to change the sign of the signed integer value 56
stored at word N20:7:
Press >@ > @ >@ >(17(5@
The module displays:
Backspace Function During Data File Value Entry
If you make an error while entering a data file value (and have not
pressed [
(17(5 ] yet), you can use the Backspace Function to delete
characters and re-type the value. In the example below, integer value
56 has just been entered.
The cursor is positioned to the right of the 6.
If you press and release the [ 6+,)7 ] key, then press and release the
[ (6& ] key, the display appears as:
Backspacing over the first character abandons the integer entry. The
module then returns to monitoring the data file address and the
original data value.
N20:7
56
N20:7
-56
Important: To enter a negative number into an address, you must
enter at least one numeric value before pressing the [
] key.
N20:7
56 789
N20:7
5 789