TCP/IP Pass-through Port
TCP Pass-through is a function whereby the Ethernet data is directly passed to
the RS232 port of the UCM within the CWM and vice versa. This allows serial
commands to be sent and status received using the LAN or Internet. It allows
Comfigurator or WizComfort to work through the CWM by specifying a Network
IP address and Port.
In order to enable the Pass-through port operation, Engineer Code must be
enabled, by pressing F0 on the Keypad as usual. If Engineer Code is disabled at
midnight on the same day or in Program Menu 3,4,0, the Pass-through Port will
also be disabled. Only 1 Pass-through port can be established at one time.
While pass-through port operation is in progress, applet communications will
cease, i.e. the normal operation of the CWM will stop. User will not be able to
control or monitor Comfort via CWM until the pass-through connection is closed
by disabling Engineer Code using Program Menu 3,4,0.
The default pass-through port number is 10001. This is specified in the browser
setup using cwmsetup.exe or under the Module Setup page in
https://(IPaddress):(PortNumber)/admin.htm. Port numbers can range from 0
to 65535.
NOTE: Port 80 must NOT be used for pass-through port.
The official list can be found at http://www.iana.org/assignments/port-numbers
Port numbers already used by CWM are 20 (file transfer data), 21 (file transfer
control), 23 (telnet), 443 (https), 8080 (http alternate) and 10001 (default
pass-through).
The Pass-through port feature is enabled on CWM firmware 5.063 and above.
If installed in a system with a firewall, check that the firewall does not
block the assigned port for TCP/IP pass-through.
Comfort Webserver Module CWM02
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