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6287 ALLY PLUS User’s ManualPage 3-20
Send a short, typical LU1 print job to the printer.
If the system sends the required data, the Host Diagnostic Report
produced will show nine bytes preceding the printable data, as
follows:
SCS TH and RH ->
2C 00 06 01 00 0C 00 90 80
If the first byte in the sequence is a 28h or a 2Ch, then bracketing
information is likely to be present. The two high bits of the last byte
in the sequence indicate the following:
00 - between begin bracket and end bracket
01 - end bracket
10 - begin bracket
11 - begin and end bracket (only block in job)
Note: This option is disabled by default. To use this option, the user must
enable it and must also define the appropriate strings in PFS 21 and PFS
22. Refer to Section 4 Programmable Function Strings for information
on programming these PFSs.
!ALLY!54=00; feature is disabled (default)
!ALLY!54=01; send LU1 bracketing PFSs
57 — Alternate bind processing
This option is an alternate method to enable the ALLY PLUS to send job
boundary PFSs to the printer. It functions in both LU1 and LU3 data
streams by inferring the presence of job boundaries implied by systems that
otherwise do not support bracketing.
This method requires SSAs to surround each job. This is not available in
most host systems, requiring the system administrator to modify the
printing system in order to generate SSAs around each print job.
Refer to Section 4 Programmable Function Strings for information on
binds and other job boundaries. Use the following sequences to program
this option:
!ALLY!57=00; feature is disabled (default)
!ALLY!57=01; allow job boundaries