Specifications

X723-300151 4-6 Issue 2
end will pass through the Dual LIU to the system controller, via the M1
line and UART A input to the local port.
At the Remote end, the system controller will receive data from the
relevant Dual LIU's line 1 via the M1 bus. This data will then be used to
control the multiplexer via UART A. Return data will be sent from the
system controller to the Dual LIU's output stream via the M2 line.
Operation with remote control using Dual LIU Line 2 is similar, but uses
UART B and M3 and M4.
Parameters required for local/remote operation are as follows. These
parameters are set up in the 'Install' menu.
Patchfield selection when using Line 1
LOCAL MUX REMOTE MUX
S
ystem Controller Patchfield 2 2
L
IU Patchfield Line 1 2 3
L
IU Patchfield Line 2 1 1
N
etworking Disabled Disabled
N
et 'A' Baud Rate 1200 1200
C
ontrol Port Local a
L
ocal Access Switch Closed Closed (Normal)
Patchfield selection when using Line 2
LOCAL MUX REMOTE MUX
S
ystem Controller Patchfield 2 2
L
IU Patchfield Line 1 1 1
L
IU Patchfield Line 2 5 2
N
etworking Disabled Disabled
N
et 'B' Baud Rate 1200 1200
C
ontrol Port Local b
L
ocal Access Switch Closed Closed (Normal)
EXAMPLE 5 - LOCAL PORT ACCESS VIA NETWORK MANAGEMENT
CONNECTOR
Using patchfield 1, 2, 3 or 4 on the system controller the multiplexer may
be controlled from a terminal connected to either the local port connector
on the front of the system controller or COM4 on the network
management connector. Management data from the two sources is
combined by the patchfield before being routed to UART C. Data output
from UARTC will be routed by the patchfield to both connectors. If
terminals were connected to both ports at the same time, commands
entered on one terminal will be echoed back on to both.