HMX6803+ and OP+HMX+ Installation and Operation Manual 85
Copyright © 2009, Harris Corporation
Appendix A: Communication and Control Troubleshooting Tips
Figure A-1. Typical Back Module Spring Connector
The frame is powered up, but + Pilot Lite does not communicate
with the module.
Solutions
• Ensure you have installed the correct cables between the PC and the frame:
•A null modem serial cable must be used between a PC and an FR6802+
frame (not a straight-through cable). At minimum, this requires that
pins 2 and 3 are crossed, but pin 5 (ground) is straight-through to pin 5.
• A USB cable must be used between a PC and an FR6802+QXF frame.
• Verify whether there is an ICE6800+ or 6800+ETH module installed in the
frame.
• + Pilot Lite control is disabled if an ICE6800+ or 6800+ETH control
module is installed in the frame.
• Set the Frame ID DIP switch settings correctly (the Frame ID DIP switch
is located at the rear of the frame.)
• If only one frame is connected, set the DIP switch to 00.
• If multiple frames are used in a daisy-chain, set the DIP switch numbers
consecutively to the following:
• 00 (frame 1)
• 01 (frame 2)
• 10 (frame 3
• 11 (frame 4)
See your 6800+ Frame Installation and Operation Manual for more
information about frame ID switch settings.
• Check that the correct COM port is configured in + Pilot Lite and that
another application is not using that COM port.
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