Page no. 32
TCP System Protocol:
The Com Port Redirector software must be installed when selecting the TCP
communications protocol. This software allows the PC or master application to
use the IP address of the CIRWATT-Ethernet as though it were a physical COM
port on the computer. This creates a communications tunnel, making a
transparent connection between both peripherals.
- Start installing and running the Com Port Redirector software from the CD
supplied with the equipment. Once it is installed the Com Port Redirector
located in Start\Programs\Com Redirector\Configuration is run.
Clicking on Com Setup and selecting the virtual series port/s
to be created. Once created click on “ok” (different virtual
ports are created, one per piece of equipment, depending on
the number of CIRWATT-Ethernet’s installed).
Then the “Add IP” button is clicked for each virtual port
created. In Host the IP for each of the installed equipment is
assigned. In TCPPort com port 11000, units are entered less
than the assigned Local port in the CIRWATT-Ethernet; i.e. a
local port must be assigned to the CIRWATT-Ethernet that
may vary between 14000 and 14009. Then a Local port
varying between 3000 and 3009 is assigned in the Com Port
redirector.
- Therefore if Local Port 14003 is assigned to the CIRWATT-Ethernet, in
TCPPort, 3003 must be entered as Local port. Then OK is clicked.
- To avoid unwanted disconnections or disconnections from the amount of
traffic, the communication tunnel reconnection options are enabled from the
Port Settings option. The following is selected when the setting screen is
opened:
i. Timeout Reconnect.
ii. Reconnect
- After setting this last option, all information is then saved by clicking the
Save button. The machine is restarted so that the ports become active.
From now on any application operating via series ports will have the virtual
ports set in the software available.
Example
(Setting the virtual port address):
COM4 ---IP 172.16.50.1
- After having followed these steps, the virtual ports will automatically open
when there is any application that makes use of the computer’s series ports,
thus making them available to the software.
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