Black Box PI750A, Manual

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CHAPTER 6: Windows Software Installation: UCTP and MPSWIN
To print something after you have redirected the ports, simply select a printer
directly from within your Windows application. The MPSWIN driver ensures
that the job is sent to the right printer. For example, suppose the physical PC
port linked to the Multiport Spooler VIII is LPT1 and you have redirected the
phantom COM2 port to port 4 on the MPS-VIII. When you print to COM2
from a Windows application, the MPSWIN driver sends the print job through
LPT1 to the MPS-VIII, along with a string that tells the MPS-VIII to send the
job to port 4.
The default redirection for the phantom ports COM5 to COM9 is “None”
(no redirection). Because the PC can’t have physical output ports with those
names, COM5 through COM9 have no assigned output port if you do not
choose to use them. Also, when a phantom port is redirected to any Multiport
Spooler VIII port (“PORT1” through “PORT12”), each job earmarked for
that phantom port is transmitted to the MPS-VIII with a string that causes the
MPS-VIII to send the job to the chosen MPS-VIII output port.
The table below shows a sample port-redirection setup. LPT1 is the
computer port linked to the Multiport Spooler VIII. In this example, a
dedicated peripheral device is directly connected to the PC’s COM1 port.
MPSDOS Redirection PC Port Type of string transmitted
phantom setting that data is with output data
port output from
COM1 COM1 COM1 None
COM2 PORT4 LPT1 Route data to MPS-VIII port 4
COM3 PORT8 LPT1 Route data to MPS-VIII port 8
COM4 String LPT1 User-defined
COM5 String LPT1 User-defined
COM6 PORT12 LPT1 Route data to MPS-VIII port 12
COM7 String LPT1 User-defined
COM8 None None None
COM9 None None None