148
MULTIPORT SPOOLER VIII (4-, 8-, and 12-Port Models)
2. When the serial port’s communication protocol is software (X-ON/
X-OFF):
You should set the source port to bidirectional and the destination port
to serial output. This makes for optimum use of the Multiport Spooler
VIII’s memory buffer, because the MPS-VIII will be able to properly
interpret any X-ON and X-OFF characters that may be generated during
the job. (If you set both ports to bidirectional, the buffer will not work as
effectively, because the MPS-VIII will improperly interpret X-ON and X-
OFF characters as an incoming job.)
If both ports are bidirectional ports, a Break signal sent by the user to break
the link is forwarded to the destination port. By contrast, if the source port is
bidirectional and the destination port is serial output, a Break signal sent to
break the link is not forwarded to the destination port—a useful feature for
those peripherals that respond unpredictably when they receive a Break
signal.
Commands are not interpreted during the link. The header, form feed, and
character strings (if any) are sent only once during the link. The number of
copies is automatically set to 1 during the link.
Formats
@@/Y
@
@@/Z
@
The name or number of a serial output or bidirectional port,
or the name of a group of such ports, that you wish to link to.
Example
@@/YLASER@
Creates an exclusive temporary bidirectional link with the port named
LASER, if it is available (the link is refused if LASER is unavailable).
NOTES
The specified destination port must be a serial output or bidirectional
port.
To use these commands, you must be granted the right to reserve a
peripheral in the Multiport Spooler VIII’s configuration (see the entry for
the
Log
parameter in
Section 4.7.2
).
Wild-card characters can be used in the port number/name.
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