Table of Contents
Advertisement
NTI NODEMUX SERIES UNIVERSAL KVM SWITCH
Loop Back
In order for an RS232 command and a response to the command to be viewed at the terminal screen, the NODEMUX must have
its Loop Back feature enabled.
More than one NODEMUX may be connected to a terminal at a time. To do so, a Matrix-Y-1 cable (available from NTI) must be
used. (See Fig. 22). For each additional NODEMUX connected, another Matrix-Y-1 cable will be required.
If the NODEMUX is one of two or more switches being controlled via RS232, and if the NODEMUX is not that last switch in the
series of switches controlled, then this setting should be changed to "DISABLED".
If the NODEMUX is the only device controlled via RS232 , or if it is the last device in a series of devices being controlled, then
this setting should remain "Enabled".
To enable or disable loop back, from the
Switch Configuration mode menu (pg. 21),
press <Tab> until the cursor bar
moves to highlight "LOOPBACK".
Press <
> (up arrow) or <
enable or disable loop back as needed for the
application.
Unit Address
In order for a terminal to communicate with one or more NODEMUX switches, each switch must have a unique address. The
NODEMUX will only respond to commands from a terminal if its address is embedded in the command. Up to 15 NODEMUX
switches can be connected in a "daisy chain" to a terminal, each with its own unique address.
To set the address of the NODEMUX, from the Switch Configuration mode menu (Fig. 21 on page 21),
press <Tab> until the cursor bar moves to highlight "RS232 UNIT ADDRESS".
press <
> (up arrow) or <
Exit Switch Configuration Mode
Once changes are made to the Switch Configuration menu, press <Enter> and <Y> to save them.
To exit without saving, press <Esc>, then <N>, then <Esc> again.
saving the changes made. .
Changes made will take effect the next time the NODEMUX is power cycled.
Note: In order to connect multiple NODEMUX units together a Matrix-Y-1 cable must be used. (See Fig. 27.) See Fig. 28
for the pinout of the Matrix-Y-1 cable.
RS232
Serial Port
CPU
SWITCH
First Unit
Figure 23- RS232 connection with Matrix-Y-1 cable
(See Figure 21)
CPU
(terminal)
> (down arrow) to
Figure 22- Daisy chain configuration with Matrix-Y-1 cable
> (down arrow) until the desired address (1-15) is selected.
Matrix-Y-1
RS232
RS232
NTI
NTI
SWITCH
Second Unit
RS232
Matrix-Y-1
Serial Port
RS232
RS232
NODEMUX
NODEMUX
SWITCH
SWITCH
First Unit
Second Unit
Disable Loopback
Disable Loopback
The menu will return to the Administration Mode without
Matrix-Y-1
Matrix-Y-1
RS232
NTI
SWITCH
Last Unit
22
Matrix-Y-1
Matrix-Y-1
RS232
NODEMUX
SWITCH
Last Unit
Enable Loopback
Advertisement
Table of Contents
