Reading / writing controll ascii string files, Reading controller ascii string files – Rockwell Automation 2707-L40X_L8X_V40X DTAM Plus Operator Interface Module Installation Instructions User Manual

Page 133

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Special Controller Functions

Appendix C

C–17

To read the contents of PLC ASCII string files:

1. Select item 1 from the Special Menu to access the P-A/D function.

You are prompted for a file type:

Select file type:
(O)Output
PREV/NEXT To Scroll
ENTER To Select

2. Press [NEXT] and [PREV] keys to scroll through the file types.

Select (ST)ASCII Str and press [

].

You are prompted for a message file number:

File Number:
15
Element Addr: 0

PLC-5 DF1, DH-485
Operating Systems

Select File Number
15
Press ENTER

File Number:
15
Element Addr: 0
Starting Char: 0

3. Enter the ASCII string file number, word or element address and the

starting (1 to 81). The starting character specifies the first character in the
string to be displayed followed by the remaining characters (up to the
82nd character).

Note: In order to maintain boundary addressing, only odd starting
characters are allowed. If an even value is entered the DTAM Plus will
change the value down to the next lower odd number.

You are shown the value beginning at the starting character:

ST015:000.00 Len 00
XXXXXXXXXXXXXXX
XXXXXXXXXXXXXXX
XXXXXXXXXXXXXXX

The Len field displays the string length in a decimal format. Up to 60
characters of the string are displayed on lines 2, 3, and 4. Strings longer
than 60 characters are truncated.

Reading Controller ASCII
String Files

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