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APPENDIX E: USING AUATC FOR RS-232 ACCESS 73
On-Line Mode
When you operate the AUATC in On-Line Mode, the main screen area displays your interactions with the
ASCII device, as if it were the screen of an ASCII terminal. Simultaneously, the data stream being output
by the device is stored in an eight-page circular buffer, so you can not only access and operate the device,
but you can also review its historical data as needed. Because the buffer is circular, it always retains the
most recent eight pages of data from the device; the newest data will overwrite the oldest data.
Conveniently, you may program any of the PC keyboard’s twelve function keys to trigger your most-often-
used data-stream commands. Pressing any key set this way causes Paragon II to send the corresponding
command to the device. During the online session, you can also send any of the following key
combinations (press and hold [Ctrl] or [Alt], press and release the command key, and release [Ctrl] or
[Alt]) to control your communication with the device or to access the AUATC’s help and setup screens:
• [Ctrl] + [Break] (the [Pause/Break] key next to the [Scroll Lock] key): Resets both the AUATC and
the serial communication with the device.
• [Ctrl] + [S] (not case-sensitive): Sends an X-OFF command to the device to temporarily stop it from
sending any data; until the flow is allowed to resume, all output data will be queued by the device. (If
the device doesn’t support X-ON/X-OFF flow control, this command has no effect.)
• [Ctrl] + [Q] (not case-sensitive): Sends an X-ON command to allow the device to resume sending data
after being halted by the [Ctrl] + [S] command.
• [Alt] + [F1]: Displays the Help screen.
• [Alt] + [F2]: Displays the Setup screen.
• [Alt] + [F3]: Displays the Set Up Programmable Keys screen.
• [Alt] + [F4]: Switch to Buffer Edit Mode.
Help Mode
Figure 65 Help screen