Lennox Hearth G8 - Manual (Page 49)

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TracVision G8 Owner’s Manual - Guide to Technical Information
Connecting a PC to the MCU Maintenance Port
To program your user-defined satellites into the TracVision G8
satellite library, you need to connect a PC to the MCU’s
maintenance port. This procedure requires Windows
Hyperterminal (or other terminal emulation software, such as
PROCOMM). Use the settings appropriate to your application
and follow the steps below.
1. Connect one end of the PC data cable to
the DB9 maintenance port connector on the rear of
the MCU. Connect the other end to the serial port
on your PC (a 9-pin/25-pin connector adapter may
be needed for some PCs).
2. Open the terminal emulation software and
establish the following settings:
• 9600 baud
• no parity
• 8 data bits
• 1 start bit
• 1 stop bit
• no flow control
3. Apply power to the TracVision G8 system and
allow the system to complete full initialization.
Data should be scrolling on the PC display to
identify any system problems detected. If no data
is seen, recheck your connections and the terminal
software setup for the correct COM port.
Figure 2-24
MCU Maintenance Port
Maintenance Port