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, and 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.