ProSoft Technology MVI56-BAS - Manual (Page 63)

MVI56-BAS ♦ ControlLogix Platform Using the Program Port (PRT1)
BASIC Module (DB/BAS Compatible) User Manual
ProSoft Technology, Inc. Page 63 of 234
December 13, 2011
5.8 Program Copies
The BAS module tokenizes each line that is typed into the module. That is, it
searches the line for BASIC commands, statements, and operators. These
commands, statements, and operators are replaced with a single character non-
printable token. This is the reason that "XRAM.BAS" and "EPROM.BAS" do not
look anything like the program that you originally typed in. If you want to save a
printable copy of the program, you have two options. First, you can log the data
received by your terminal emulation software and LIST the program to the
screen. Or, you can EXPORT your program to a file on the Compact Flash. For
example,
Ready
>export "myprog.txt"
Then, exit to DOS and use RY.EXE to copy the program to your host computer.
Do not EXPORT to "XRAM.BAS", "BATTERY.BAS", or "EPROM.BAS"!
You can actually recover programs by using the LOAD command. For example,
Ready
>load "myprog.txt"
At first glance, this approach appears to be a way to backup and recover BASIC
programs. However, only the XRAM part of the backup data is stored here. The
ASCII port (PRT1 and PRT2) parameters, the DH-485 port parameters,
PGMPRT parameters, and other things are stored as a raw data structure in
"BATTERY.BAS". Further, the EPROM programs are stored in "EPROM.BAS".
For a full backup, "XRAM.BAS", "BATTERY.BAS", and "EPROM.BAS" must all
three be backed up and recovered.