Introduction
Chapter 1
14
Before inserting a data cartridge into the recorder, verify that the power
ON/OFF switch is in the ON position. This ensures that when the
cartridge is inserted, an automatic repacking operation is initiated. The
repacking operation involves a fast forward to the EOT (end of tape)
marker, and a fast reverse to the BOT (beginning of tape) marker. This
operation improves the reliability of program recording and loading. If
the power ON/OFF switch is turned on after the cartridge has been
inserted, the tape will not be repacked.
Verifying that programs are properly transferred between the recorder and
the processor is extremely important. A program which contains errors
due to the data transfer has little value.
Errors in transmission can be caused by many factors, including loose
connections, faulty cables, and electrical noise. If errors are found after
loading a program into the processor memory, you have two options:
The program can be re-loaded
An Industrial Terminal (cat. no. 1770-T1,-T2,-T3,-T4) can be used to
locate and correct the error
If errors are found after recording the contents of the processor memory,
the only practical option is to repeat the record operation.
Another use of the recorder’s verification feature is to check the contents
of an improperly marked tape. If the suggestions of section 1.3 are
followed, this should not be necessary.
Data Cartridge Repacking
Importance of Verification
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