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3-22 Hardware installation
Input/output port assignments
553-4011-110 Standard 1.0 November 1994
Five configurations of NAC 2 exist, based on the number of MVME332XT
boards configured on the system. A NAC 2 system can be configured with
one to five MVME332XT boards.
Each MVME332XT, or I/O card, has a maximum of three ports that can be
connected to multiport cables as seen in the "VME multiport cable"
subsection. Each multiport cable has three RS-232 serial port connectors
labelled A, B and C. The ports in the multiport cable can be connected to
peripherals or a limited choice of other devices, except where noted below.
Cable C of the multiport cable connected to CONN 3C cannot be used,
and should not be connected to any type of device.
At least one supervisor workstation, one network link, and one printer
must be connected to any I/O card through the multiport cable.
Aside from these restrictions, you can attach the remainder of the cables to
Meridian MAX nodes, supervisor workstations, printers, or modems.
Table 3-3 provides you with a chart which lists all of the assignable ports,
as they appear on the NAC 2 Communication Port Assignment screen, and
shows the type of device which can be connected to each port. As you
decide upon the device to connect to each port, enter the device name in the
space provided. If you are assigning a supervisor workstation, remote login,
or network link, you must specify the type of connection: direct, dial-up at
2400 baud, or dial-up at 9600 baud. This information is requested during
the software installation.
Figure 3-6 shows the Generic input/output connector panel. It identifies the
ports which are connected to the multiport cables. The other end of the
cables are connected to the peripherals identified by you in Table 3-3.
Please note the following abbreviations:
SW
Supervisor workstation
PRT
Printer
NL
Network link (NetLink)
RSL
Remote supervisor login link
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