Drive train control arrangements for modular surgical instruments

A surgical instrument, comprising:

• an end effector;
• a shaft extending proximally from the end effector;
• a firing assembly configured to fire a plurality of staples;
• an articulation assembly configured to articulate the end effector relative to the shaft;
• a locking member movable between a locked configuration and an unlocked configuration;
• and
• a housing extending proximally from the shaft, wherein the housing is removably couplable to the shaft when the locking member is in the unlocked configuration, the housing comprising:
• a motor configured to drive at least one of the firing assembly and the articulation assembly;
• a controller in communication with the motor;
• and
• a home state input operably coupled to the locking member, wherein the home state input is configured to transmit a home state input signal to the controller, wherein the controller is configured to activate the motor to reset at least one of the firing assembly and the articulation assembly to a home state in response to the home state input signal.

A surgical instrument, comprising:

• an end effector;
• a shaft extending proximally from the end effector;
• an articulation assembly configured to articulate the end effector relative to the shaft between a home state position and an articulated position;
• a locking member movable between a locked configuration and an unlocked configuration;
• and
• a housing extending proximally from the shaft, wherein the housing is removably couplable to the shaft when the locking member is in the unlocked configuration, the housing comprising:
• a motor configured to drive the articulation assembly;
• and
• a controller in communication with the motor, wherein the controller is configured to activate the motor to effectuate a return of the end effector to the home state position when the locking member is moved between the locked configuration and the unlocked configuration.