Data Sheet

“Serial framing” bit in the “Errors occurred” variable to be set.)

In a non-serial control mode, serial errors do not cause the Tic to shut down because the serial error

will never get set. However, the serial-related bits in the “Errors occurred” register will still be set, so

you can detect serial errors in non-serial control modes.

The serial error is cleared whenever the Tic receives any of following commands over serial, I²C, or

USB:

• Set target position

• Set target velocity

• Halt and set position

• Halt and hold

• Energize

• Exit safe start

• Reset

Condition: Command timeout

The Tic keeps track of how much time has passed since it last received a serial, I²C, or USB command

that is one of the commands that clears the serial error (listed above), or the “Reset command timeout”

command. Whenever the Tic’s control mode is “Serial / I²C / USB” and that time exceeds the timeout

period, which is one second by default, the Tic sets the “Command timeout” error bit. You can change

the timeout period or disable this feature from the “Input and motor settings” tab of the Tic Control

Center. When the timeout error occurs, you can clear it by sending one of the commands that clears

the serial error (listed above) or by sending the “Reset command timeout” command.

The Tic Control Center sends the “Reset command timeout” command repeatedly while it is connected

to a Tic over USB.

The “Command timeout” error is useful if you want to control the Tic over serial, I²C, or USB, and you

want to be sure that the stepper motor will stop moving if the device controlling the Tic stops working.

Condition: Safe start violation

The Tic’s safe start feature helps to avoid unexpectedly powering the motor in speed control modes

and in “Serial / I²C / USB” mode.

In the “RC speed”, “Analog speed”, or “Encoder speed” control mode, the Tic will generally set the

“Safe start violation” error bit whenever the Tic’s “Operation state” is not “Normal” and the “Input

5. Details Page 71 of 150