F01600 STOP A Triggered (Safety) fault in siemens drive

F01600 STOP A Triggered (Safety) fault in siemens drive indicates that the safe Torque Off (STO) or Safety Integrated function triggered a stop. 

Cause 
- Emergency stop pressed. Safety door opened. Safety wiring broken. 

Remedy 
- Reset the safety circuit (E-Stop). 
- Check 24V safety inputs on the Control Unit.