Communication line of "RFC2217 Client" category

The "RFC2217 Client" communication line supports the communication with the converters of serial interfaces (device servers) according to RFC2217 (Telnet Com Port Control Option) standard. It supports a transfer of data and control commands (setting baud rate, number of bits, parity, etc.) over a single TCP connection.
Unlike the "SerialOverUDP Device Redundant" and "SerialOverUDP Line Redundant" lines, the transmission parameters may be set remotely, i.e. from the configuration of line in D2000 System. The line of "RFC2217 Client" category can be used on both Windows and Linux platforms.

Parameters

Configuration parameters of "RFC2217 Client" line.

Server IP/name

IP address (recommended) or DNS name of the target device (converter of serial interfaces). For redundant devices, multiple IP addresses or names separated by commas or semicolons can also be specified.

Port

The TCP port number (1-65535) on which the device is listening.

Line modes

Transmission parameters can be set for four modes, as when setting the "Serial" and "Serial Line Redundant" lines.
Parameter "ConstOpen" is ignored - TCP connection is established the first time it is used.

Operation of the line in redundancy

In redundant systems (redundant D2000 servers and/or multiple instances of KOM processes), only the active KOM process connected to the D2000 Server in the HOT state opens a TCP connection. Once it becomes passive, the connection to the device is closed.

Tell command LNSTAT 

The tell command LNSTAT OPEN/CLOSE stops communication (CLOSE) and closes the connection to the device. Communication resumes after the LNSTAT OPEN command or when the communication process is restarted.