NEC PD Comms Tool Betriebsanweisung PDF herunterladen (Seite 50)

Direct LAN

Supported display connection congurations

RS-232C

OUT

LAN

RS-232C IN, OUT, and LAN

LAN1 LAN2

RS-232C

RS-232C IN, LAN 1 and LAN2

Models that have an RJ45 LAN connection can be individually connected directly to a LAN via a hub or switch instead

of daisy-chaining displays together. This may require more wiring since each display is individually connected directly

to a central LAN hub or switch. The advantages of using this method is that communications to other displays will still

function even if:

• A display is removed from the system without bridging the daisy-chain.

• A display looses AC power or is turned off via the display’s main power switch.

• A display fails.

• There is a fault in cabling to an individual display.

• A display enters standby power mode and the LAN POWER setting is set to OFF (models that support LAN

daisy-chain only).

See “Example: Direct Multi IP LAN” on page 56.

Important points to note:

• Each display must have a unique IP address.

• Since each display is addressed by the combination of IP address and Monitor ID, each display can have the

same or unique Monitor IDs.

RS232 Daisy-chain

Supported display connection congurations

RS-232C

OUT

RS-232C IN and OUT

RS-232C

OUT

LAN

RS-232C IN, OUT, and LAN

Models that have two RS232 connections (not including any RS232 connections on OPS devices), support RS232

daisy-chaining. The connection labeled IN is the input to the display from the host PC. The other connection labeled

OUT is the output to connect to the IN on the next display in the daisy chain.

See “Example: Single IP LAN with daisy-chained RS232” on page 55 and “Example: Daisy-chained RS232 with one

COM port” on page 53.

Important points to note:

• When using RS232 to connect displays using a daisy-chain, each display on the chain must have a unique

Monitor ID (set via the display’s OSD).

• Displays must be connected using an RS232 serial NULL modem cable (also known as a “crossover” cable).

• The rst display in the daisy-chain can be connected to the host PC either via RS232, or by LAN if the model has

an RJ45 LAN connection (not including any RJ45 LAN connections on OPS devices). When connected via LAN,

the rst display can forward commands received over LAN to other displays in the RS232 daisy-chain.

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