How to change the sign of a value, Backspace function during data file value entry – Rockwell Automation 1747-DTAM-E,D17476.1 Data Table Access Module (DTAM) User Manual
Page 48
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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