Sterlco M2B+ Controller - Manual (Page 46)

46 of 68
5-16 Accessing the Debug Menu
The controller has a troubleshooting tool in the secure menu. Use this menu to assist in
debugging communications errors and flow sensor input errors.
Use the following procedure to troubleshoot communications errors:
1. Press the Index button three times to access the Secure menu.
2. Press the Enter button.
3. Press the Index button until the display reads “Debug”.
4. Press the Enter button.
5. Press the Up button until the top display reads “Comm. Activity [TX and RX]” and
the bottom display reads “Debug 1.”
6. Press the Enter button.
7. Press the Alarm Silence button to return to Running mode. The top line of the LCD
display will indicate by flashing “TX” and “RX”, the transfer of commands between
the host and the slave controllers. If one of the characters isn’t flashing, it is not
communicating.
8. Return to the Debug program and turn it off after the troubleshooting task is
complete.
Use the following procedure to troubleshoot flow sensor input errors:
1. Press the Index button three times to access the Secure menu.
2. Press the Enter button.
3. Press the Index button until the display reads “Debug”.
4. Press the Enter button.
5. Press the Up button until the top display reads “Flow Freq # # # HZ” and the bottom
display reads “Debug 2.”
6. Press the Enter button.
7. Press the Alarm Silence button to return to Running mode. The top line of the display
will read “Flow Freq” with a value in Hertz. Use this value to verify calibration or
verify the presence of an input signal.
8. Return to the Debug program and turn it off after the troubleshooting task is
complete.