Section 3 - Serial Port Connection Methods And Attributes; Serial Port Redirection - Equinox Systems ESP-2 MI Installation And User Manual

Section 3 - Serial Port Connection Methods and Attributes

There are several methods a remote device may use to access a serial port on the ESP-2
MI hub and then transmit/receive data from that port:
• Serial port redirection - see page 10
• Telnet server - see page 11
• Raw TCP server - see page 12
• Raw TCP client - see page 13
• Modem emulation - see page 14
• Configuration utility - see page 20
Each connection method may be separately enabled or disabled for each ESP-2 port. A
port may have multiple connection methods enabled, with the following exceptions:
• The raw TCP client connection method is exclusive; that is, when it is enabled on
a port, no other connection methods can be enabled for that port. (Conversely, if
other connection methods are enabled for a port, you cannot enable the raw TCP
client connection method on that port until you disable the other methods.)
• If you enable the raw TCP server connection method and enable the idle TCP
buffering option on a port, then the TCP server connection method becomes
exclusive; no other connection methods can be enabled for that port.
• The modem emulation connection method is valid only on an RS-232 port. This
method is exclusive; when it is enabled on a port, no other connection methods
can be enabled for that port.
In any case, a port may be actively open and used by only one method at a time.
You may configure port connection methods using:
The web interface - see Displaying or Changing Port Interface, Attributes and
Connection Methods on page 24.
-or-
The configuration utility - see Displaying or Changing Port Interface, Attributes
and Connection Methods on page 35.
-or-
A configuration file - see Port Connection Method Commands on page 41.
Serial port attributes may be configured for all connection methods; see page 20.

3.1 Serial Port Redirection

The serial port redirection connection method uses an ESP-2 hub driver on a host
computer to communicate with the ESP-2 serial hub. The driver creates a virtual
COMM or tty port interface within the host's operating system.
Table 6 describes this method's configurable items for each serial port.
10 Equinox ESP-2 MI Serial Hub Installation and User Guide