Instruction manual

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4.6 Communicating with the WebMaster
4.6.1 Direct Serial Connection to the RS232 Port
A direct serial connection to the WebMaster can be made in two ways. A temporary connection
can be made between a laptop and the front panel of the controller, or a permanent connection can
be made between a PC and the RS232 terminal strip connection inside the controller.
Equipment Required
§ A serial null modem cable (PC-AT) with the appropriate connectors to connect your computer
to the WebMaster. If connecting temporarily to the front panel of the controller, this will be a
DB9F connector. If connecting permanently to the terminal strip inside the controller, this will
be tinned leads.
§ An Internet-ready computer with the following capabilities: 100 MHz minimum processor
speed, 40 MB minimum RAM, Windows operating system, and Windows Internet Explorer
version 5.0 or higher web browser software.
Features Required in the WebMaster
§ Any WebMaster controller is capable of a direct serial connection.
Utilities you need to set up on your computer
§ A null modem driver, that is included with the controller, must be installed on your computer.
Refer to the separate detailed instructions for this procedure.
§ A Windows Dialup Networking Adapter must be created in order to establish a
communication between the controller and your PC. Refer to the separate detailed instructions
for this procedure.
Parameters that need to programmed into the WebMaster
§ The WebMaster is capable of this type of communication without any programming by the
user prior to attempting the communication.
Steps Required to Establish a Connection
§ Install the null modem driver on your PC. This needs to done only once for each PC that will
be used to communicate with a WebMaster controller.
§ Create the dialup networking adapter on your PC. This needs to done only once for each PC
that will be used to communicate with a WebMaster controller.
§ Connect the null modem cable between the PC and the WebMaster.
§ Use the dialup networking adapter to connect the PC to the WebMaster.
§ Open Internet Explorer and type in the address 199.199.199.2. The sign-on screen for the
WebMaster will come up.
§ The sign-on screen of the WebMaster will come up. Type the User Name and Password
(Access Code) in the text boxes and click the Submit button. The default user name is
"webmaster" and the default passwords are "2001" for full access, "2002" for calibration only,
and "2003" for read only. These defaults can and should be changed in the Access Code page.
RS-232(Serial)
Hard coded Fixed
IP Address:
199.199.199.2
Web Browser
(Client)