Rockwell Automation 2706-NP3 DL20 OFFLINE PROGRAMMING MANUAL - Manual (Page 24)

A–B
5
Chapter
5–1
Message Operations
This chapter shows how to use the DL20 Offline Programmer to:
•
Create new messages
•
Edit existing messages
•
Delete messages
•
Copy messages
Messages created using the DL20 Offline Programmer are stored on disk or
in the DL20 subdirectory. Each message is stored in a separate file with the
name MSG####.DAT. The #### characters represent a message number
from 1 to 1022. For example:
MSG0001.DAT Message 1
MSG0002.DAT Message 2
MSG0003.DAT Message 3
.
.
.
MSG1021.DAT Message 1021
MSG1022.DAT Message 1022
Note: The first sixteen messages (1 – 16) store special DL20 messages.
When you edit and save an existing message, the original version of the
message is retained with the same file name but the .OLD extension. For
example, if you edit Message 20, the following two files reside on disk:
MSG0020.DAT new, edited file
MSG0020.OLD old, original file
If you prefer the old version of the message, delete the new message and
rename the old version. For example, to delete the edited version of Message
20 and retain the original version, type the commands below at DOS level.
C:\DL20>ERASE MSG0020.DAT [Enter]
C:\DL20>RENAME MSG0020.OLD MSG0020.DAT [Enter]
Chapter Objectives
How Messages are Stored