Data Sheet

◦ If the motor is energized and a safe start violation is only error happening, then the

yellow LED will stay on most of the time, but will periodically blink off once:

• If the stepper motor coils are de-energized, then the yellow LED will be off most of the time.

◦ If there is a motor driver error (i.e. from an over-current or over-temperature

condition), the yellow LED will blink 8 times per second:

This blinking will look very similar to the abnormal startup blinking described below,

so if you see it, then it is best to look at the Tic’s status using the Tic Control Center

software to figure out what is happening.

◦ If there is no motor power supplied to VIN, or the voltage is too low, the yellow LED

will blink slowly once per second (on for 0.5 s, off for 0.5 s):

◦ Otherwise, if the motor has been intentionally de-energized by receiving the De-

energize command over USB, serial, or I²C, then the yellow LED will be off most of

the time, but periodically blink three times:

◦ Otherwise, if the motor is de-energized and any error is happening other than a safe

start violation, then the yellow LED will be off most of the time, but periodically blink

two times:

◦ If the motor is de-energized and the only error is a safe start violation, then the

yellow LED will be off most of the time, but periodically blink once:

Note that the Tic does not read any feedback from the motor so it cannot tell if the stepper motor is

3. Getting started Page 17 of 150