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A/C-7P RO, A/C-7S RO
5. Operation
If the PC print job is sent while a
host job is printing, the printer
responds as “busy” to the PC print
request. The print job can be
spooled through a spool program,
sent to the printer when the host job
is finished or if the PC’s printer port
is set for infinite retry through the
DOS “Configure Printer” command
(described in the DOS manual), the
print job waits for the printer to be
available to receive the data.
By default, the A/C-7S RO sends
data at 96N81 (9,600 baud; parity =
none; word length = 8 bits; stop bits
= 1). Make sure that the printer and
the A/C-7S RO are using the same
serial parameters. The A/C-7S RO’s
Serial-Out parameters can be
changed using the second (right)
bank of switches located on the front
panel.
Also make sure that the A/C-7S
RO’s Serial-In settings are the same
as those of the PC/LAN. Note that
when printing from the share por,
the slowest baud rate (Serial-In,
Serial-Out) will determine the print
speed.
The A/C-7S RO’s Serial In
parameters can be changed through
Host/PC download commands 76
through 79.
5.1 Printer Sharing
The A/C-7P RO and A/C-7S RO
allow the printer to be shared
automatically between an attached
PC/LAN and an IBM coax host.
Simply connect the PC/LAN printer
server to the parallel/serial port.
The A/C-7P RO can supply external
devices attached to its parallel
sharing port with 5V up to 350 mA.
See Appendix E for instructions on
how to transfer power to pin 18 on
the A/C-7P RO. The A/C-7 RO uses
a timeout after each print job before
it honors print jobs from another
port.
At the end of a host print job, the
A/C-7P RO waits for the specified
Host Port Timeout period before it
honors data streams coming in
through the parallel port. The Host
Port Timeout period is set through
Host/PC download command 51.
After a parallel or serial print job is
completed, the A/C-7 RO will again
wait for a period of time before it
honors host print jobs. The Sharing
Port Timeout is set through
Host/PC download command 50.