Equinox Systems ESP-2 OPTO, Инструкция по установке и эксплуатации

Страница: 13 / 48

Equinox ESP-2 OPTO Serial Hub Installation and User Guide 9
Section 3 - Serial Port Connection Methods and Attributes
There are several methods a remote device may use to access a serial port on an ESP-2
OPTO hub and then transmit/receive data from that port:
•
Serial port redirection - see page 9
• Telnet server - see page 10
• Raw TCP server - see page 11
• Raw TCP client - see page 12
• Configuration utility - page 13
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.
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 Attributes and Connection
Methods on page 17.
-or-
The configuration utility - see
Displaying or Changing Port Attributes and
Connection Methods on page 27.
-or-
A configuration file - see
Port Connection Method Commands on page 33.
Serial port attributes may be configured for all connection methods.
3.1 Serial Port Redirection
The serial port redirection connection method uses an ESP-2 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 7 describes this method’s configurable items for each serial port.
Table 7: Serial Port Redirection Configurable Items
Item Description
Enable/
disable
Enables or disables the serial port redirection connection method on the serial
port. The default value is enabled. This method cannot be enabled if the raw
TCP client connection method is already enabled for the port.