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NEC Display Wall Calibrator Guide de l'utilisateur Page 28

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28 | NEC DISPLAY WALL CALIBRATOR - USER’S GUIDE
Example: RS232 using LAN daisy-chain
Supported display connection congurations
LAN1 LAN2
RS-232C
RS-232C IN, LAN 1 and LAN2
In this example, the host PC is connected to the rst display via RS232. The displays are daisy-chained together using
LAN connections. The LAN2 (output) is connected to the LAN1 (input) on the next display in the daisy-chain.
Each display has a unique IP address assigned.
RS232 IN
LAN2
LAN1
LAN2
LAN1
LAN2
LAN1
ID 1
IP 192.168.0.1
Display 1
ID 2
IP 192.168.0.2
Display 2
ID 3
IP 192.168.0.3
Display 3
ID 4
IP 192.168.0.4
Display 4
PC
COM1
The rst display will translate and forward RS232 communications from the host PC over the LAN connection to the
other displays.
The Auto ID operation must be performed manually on the rst display once all of the displays are connected and
powered up. See “Using the Auto ID function with a LAN daisy-chain” on page 21 for more information on performing
this operation. This will automatically detect the displays in the LAN daisy-chain and assign sequential Monitor IDs
based on the physical cable connection order of the displays.
Note:
If the displays are going to be connected to a network in order to provide remote control or monitoring (by connecting LAN1
on Display 1 to the LAN) then each display should have a unique IP address assigned manually.
However if the displays are not going to be connected to a network and only the RS232 connection on the rst display will
be used, then it is not necessary to manually assign them IP addresses. The displays will automatically assign themselves IP
addresses if no DNS is detected and the IP SETTING is set the AUTO.
Since communications to Displays 2, 3 and 4 is routed through and translated by Display 1, the software is congured
to so that Displays 2, 3, and 4 use the same RS232 COM port as Display 1, even though they are using a daisy-chain
LAN connection to Display 1.
Note: The Monitor ID numbers are assigned sequentially based on the physical connection order of the displays when the Auto
ID operation is performed. The layout and ID assignments in the software must match accordingly.
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