Awt - Ascii Write - Allen-Bradley MicroLogix 1100 Instruction Set Reference Manual

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(1) The Control data file is the only valid file type for the Control Element.

AWT - ASCII Write

AWT AWT
ASCII Write
Channel 0
Source ST14:4
Control R6:1
String Length 40
Characters Sent 0
Error 0
Example
I:1
[
10
If input slot 1, bit 10 is set, read 25 characters from
ST37:42 and write it to the display device. Then
write a carriage return and line feed (default).
In this example, when the rung goes from false-to-true, the control
element Enable (EN) bit is set. When the instruction is placed in the ASCII
queue, the Queue bit (EU) is set. The Running bit (RN) is set when the
instruction is executing. The DN bit is set on completion of the
instruction.
The controller sends 25 characters from the start of string ST37:42 to the
display device and then sends user-configured append characters. The
Done bit (DN) is set and a value of 27 is present in .POS word of the
ASCII control data file.
When an error is detected, the error code is written to the Error Code Byte
and the Error Bit (ER) is set. See ASCII Instruction Error Codes on page
337 for a list of the error codes and recommended action to take.
TIP
Instruction Type: output
EN
Execution Time for the AWT Instruction
DN
ER
Controller
MicroLogix 1100
Use the AWT instruction to write characters from a source string to an
external device.
For information on the timing of this instruction, see the
timing diagram on page 336.
When Instruction Is:
True
13.99 μs/character
ASCII Instructions
AWA
ASCII WRITE APPEND
Channel
0
Source ST37:42
Control R6:23
25
String Length
Characters Sent 0
Error
00
False
14.21 μs
Publication 1763-RM001C-EN-P - October 2009
319
EN
DN
ER