Connect Errors - the most common connection errors occur due to faulty or intemittent connections. If you receive a "Error connecting to TCF" error, check the following possible problem sources.
- Check the COM port assignment of your USB-to-Serial converter as described under Determining COM Port.
- Check that the PC Serial Port converter is wired correctly.
- Check the flat Reverse cable. You easily check that each end of the RJ12 connectors are wired straight through. That is, Pin 1 on one connector should be connected to Pin 1 on the opposite connector. When looking at the Reverse cable connector ends, the wire colors should appear identical as shown below.
- Check that the RJ12 connectors are properly inserted into the TCF-S focuser control box and the PC Serial Port Converter.
- If using the original type TCF-S or TCF-S3 with external hand controllers, be certain the hand control Mode slide switch is set to the PC/Manual position. If either AUTO-A or AUTO-B is selected, a serial connection cannot be made. The Learn slide switch must also be set to RUN for proper operation. (See About for a view of the hand controller.)
