Moxa Technologies DE-304 Installation Guide download pdf (Page 46)

5-6

Host Based / Driver Mode

Setting Value Notes Necessity

TCP data port 950

The TCP port through which data

is sent.

Required

TCP command

port

966

The TCP port through which

commands are sent.

Required

Delimiter 1

(Hex)

ASCII code for

the 1

delimiter

Optional

Delimiter 2

(Hex)

ASCII code for

the 2

delimiter

Once the NPort receives both

delimiters through its serial port,

it immediately packs all data

currently in its buffer and sends

it out the NPort’s Ethernet port.

Note: Delimiter 2 is optional. If

left blank, then Delimiter 1 alone

trips clearing of the buffer.*

Optional

blank (or 0)

Disabled.

Force transmit

(ms)

1 – 65535 ms

Forces the NPort’s TCP/IP

protocol software to try to pack

serial data received during the

specified time into the same data

frame.*

Optional

TCP connection is never closed

by this device.

TCP alive check

time

1 – 99 min.

TCP connection is automatically

closed by this device if there is no

TCP activity for the given time.

Optional

If the size of the serial data received is greater than 1K, the NPort will

automatically pack the data and send it to the Ethernet.

Pair Connection Mode

Pair Connection Mode employs two 1-port NPorts in tandem, and can be used to

remove the 15-meter distance limitation imposed by the RS-232 interface. One

NPort is connected from its RS-232 port to the COM port of a PC or other type

of computer, such as hand-held PDAs that have a serial port, and the serial

device is connected to the RS-232 port of the other NPort. The two NPorts are

then connected to each other with a cross-over Ethernet cable, both are

connected to the same LAN, or in a more advanced setup, they communicate

with each other over a WAN (i.e., through one or more routers). Pair Connection

Mode transparently transfers both data and modem control signals (although it

cannot transmit the DCD signal) between the two NPorts.

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