Julyl 2017 Glossary 263
X
XCB
See expansion cable.
XPM
See Module X (2, 3, ..., 15).
Z
Z mechanism
The robotic assembly mounted at the back of the robot that raises and lowers the arm.
The Z mechanism includes a motor, gears, the bullwheel, and the wires and pulleys
that hold the arm. As the motor turns, the bullwheel rotates and extends or retracts
the wires to lower or raise the arm.
ZMech
See Z mechanism.