Moxa Technologies NE-4100 user manual Real COM Mode, Local TCP port, Command port

NE-4100 Series User’s Manual Web Console Configuration

port is set to 1200 bps, 8 data bits, 1 stop bit, and no for parity. In this case, the total number of bits required to send a character is 10 bits and the time required to transfer one character is

( 10 bits / 1200 bits/s ) * 1000 = 8.3 ms.

Therefore, you should set Force Transmit timeout to be larger than 8.3 ms. Force Transmit timeout is specified in milliseconds and must be larger than 10 ms.

If the user wants to send a series of characters in a packet, the serial device attached to the NE-4100 should send characters without time delay larger than the Force Transmit timeout between characters, and the total length of data must be smaller than or equal to the NE-4100 module’s internal buffer size. NE-4100’s serial communication buffer size is 1 Kbyte per port.

Local TCP port

Setting	Factory Default	Necessity
1 to 65535	4001	Required

The TCP port that NE-4100 uses to listen to connections, and that other devices must use to contact NE-4100. To avoid conflicts with well known TCP ports, the default is set to 4001.

Command port

Setting	Factory Default	Necessity
1 to 65535	966	Optional

The command port is a listen TCP port for IP-Serial Lib commands from the host. In order to prevent a TCP port conflict with other applications, the user can adjust the command port to another port if needed. The IP-Serial Lib will automatically check out the Command Port on NE-4100 so that the user does not need to configure the program.

Real COM Mode

TCP alive check time

Setting	Factory Default	Necessity
0 to 99 min	7 min	Optional

0 min: TCP connection is not closed due to an idle TCP connection.

1 to 99 min: NE-4100 automatically closes the TCP connection if there is no TCP activity for the given time. After the connection is closed, NE-4100 starts listening for another Real COM driver’s connection from another host.

Max Connection

Setting	Factory Default	Necessity
1, 2, 3, 4	1	Required

Max connection is usually used when the user needs to receive data from different hosts simultaneously. The factory default only allows 1 connection at a same. When Max Connection is set to 1, the Real COM driver on the specific host has full control.

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