Diagnostic port between independent robots

A robot for use in an automated storage library having a guide structure, a main connector disposed at a predetermined position adjacent to the guide structure, and a diagnostic center connected to the main connector, the robot comprising:

• a chassis operative to move along the guide structure;
• and
• a test connector disposed on the chassis and oriented to mate with the main connector while the chassis is at approximately the predetermined position, the test connector being electrically connected to the chassis to enable the diagnostic center to test the robot.

A method of testing a robot, wherein the robot has a test connector, and a diagnostic center is connected to a main connector, the method comprising:

• moving the robot toward the main connector to mate the test connector and the main connector;
• and
• testing the robot with the diagnostic center through the main connector and the test connector.

A method of testing a first robot, wherein the first robot has a first connector, and a second robot has a second connector, the method comprising:

• relatively moving the first robot and the second robot toward each other to mate the first connector and the second connector;
• and
• testing the first robot through the first connector and the second connector.