7
SECTION II
MONITORING THE UNIT WITH A COMMUNICATIONS PROGRAM AND
PROGRAMMERS INFORMATION
Users and programmers that want to communicate directly with and monitor output from the
unit can use a modem communications program set up to communicate directly with the serial
port. The unit will respond to text commands and deliver text output to the screen. Simple
lettered toggle settings determine how the unit operates. Most toggle letters can be set either
upper or lower case for use in different applications. The “V” command shows you the
present configuration of the unit. The on-board memory is controlled using text commands.
This section provides details on communicating with the unit through a terminal program;
discussion on commands and setup toggles; logging information to a text file; data output
format; and on-board memory considerations. It also includes unit settings for typical
applications and important application notes for software programmers
Establish Communication with the Hardware
The unit connects to a serial port on your computer. Attach the supplied 9 pin serial cable
between the unit and a serial port that is not used by any other device. Since serial ports can
be either 9 or 25 pins, a 9 to 25 pin adapter may be required and can be purchased at any
computer or local Radio Shack store (Catalog # 26-287A). Plug the power supply into the
unit.
You can use any modem communications program to establish a connection with the unit.
Typical examples are “Procomm”, “Crosstalk”, or “Hyperterminal” for Windows. For
detailed instructions on connecting with Windows “Hyperterminal” refer to “Computer
Communication Problems” on page 33.
1.
Connect power to the unit. The power light should remain on. (At least 1 line light may
also be on if a “live” telephone line is connected and is not in use).
2.
Launch your communications program.
Summary of Contents for WHOZZ CALLING 2
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