Moxa Technologies NPort 6000 Series, Руководство пользователя

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NPort 6000 Series Introducing Serial Port Operation Modes
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Dynamic IP address application
Reserve Real COM mode is an innovative operation mode developed by Moxa. It allows NPort 6000 terminal
servers to achieve the same effect as Real COM mode, but without needint to apply for a public IP address. In
other words, Reverse Real COM mode chan be used even if the NPort is using a private IP address, or is being
used in a dynamic IP address environment.
In Reserve Real COM mode, the NPort 6000 will actively initiate a connection to the remote host/server that is
listed in the destination IP field after it boots up.
RFC2217 Mode
RFC-2217 mode is similar to Real COM mode. That is, a driver is used to establish a transparent connection
between a host computer and a serial device by mapping the serial port on the NPort 6000 to a local COM port
on the host computer. RFC2217 defines general COM port control options based on the Telnet protocol. Third
party drivers supporting RFC-2217 are widely available on the Internet and can be used to implement Virtual
COM mapping to your NPort 6000 serial port(s).
Socket Applications
For socket applications, the NPort 6000 offers the following modes: TCP Server/Secure TCP Server, TCP Client/
Secure TCP Client, and UDP.
TCP Server and Secure TCP Server Modes
In TCP Server mode, the serial port on the NPort 6000 is assigned a port number which must not conflict with
any other serial port on the NPort 6000. The host computer initiates contact with the NPort 6000, establishes
the connection, and receives data from the serial device. This operation mode also supports up to 8
simultaneous connections, enabling multiple hosts to collect data from the same serial device at the same time.
As illustrated in the figure, data transmission proceeds as follows:
1. The host requests a connection from the NPort 6000, which is configured for TCP Server mode.
2. Once the connection is established, data can be transmitted in both directions between the host and the
NPort 6000.
TCP Server mode supports optional data encryption using SSL.