AML M3000 Guida Utente Pagina 112

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8Advanced Operations
8-7
Maximum data field length is 250 characters
The following data file illustrates how the M3000 can be used to show a delivery route. An easy
way to create a program that displays this data file, is to modify built-in program P2. By changing
Record 1 and Record 2 prompts of P2 to:
CO:
ST:
and saving the program with the name "ROUTE1", you can then import and use this data file,
which is also named, "Route1". Be sure to add a space after both colons.
D
ROUTE1
P2
AJAX MFG
101 MAIN
FRANKLIN HWD
246 MAIN
WE BRAKE
502 W. 5TH
IC OPTICS
900 W. 7TH
LABELWORKS
2190 REGAL PKWY
When you view the first record of data file "ROUTE1", the display shows:
CO: AJAX MFG
ST: 101 MAIN
Controlling How an ASCII Data File Is Used by the M3000
A new screen has been added to the program options in the PROG mode, immediately after the
EOF Delay screen. When you cursor down to this screen the display shows:
Use Receive Data
Files Only? N
Leaving this option set to 'N' or 'NO' allows the user to create new files during FUNCTION
INPUT. The 'NO' setting, however, does not prohibit the use of imported ASCII data files.
When this option is changed to 'Y' or 'YES', the M3000 will accept only imported ASCII data files,
and does not allow the user to create new data files for the program during FUNCTION INPUT.
After responding 'Yes' to the "Use Receive Data Files Only" screen, another screen appears. This
new screen asks?
Allow Append To
End of File? Y
If you do not allow append, user input is restricted to the existing contents of the data file in use
and the user may not add additional records.
CAUTION: Selecting "Allow Append To End of File? Y", can cause LOSS OF DATA
when the user EXITs a data file without satisfying the input requirements of
ALL REQUIRED INPUT FIELDS in the last record. When the user
violates this precaution the M3000 deletes the LAST RECORD in the data
file. This condition continues to occur each time the user fails to complete
ALL REQUIRED INPUT FIELDS and EXITs DATA ENTRY.
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