J

jerk rate

The maximum rate of change of the rate used to ramp output to input.

jog

To generate motion (continuous or incremental) whenever an operator-activated switch is closed.

joint axis

A rotary robotic coordinate axis typically having overtravel rather than rollover limits.

jump

A change in the normal sequence of program execution by executing an instruction that alters the program counter (sometimes called a branch). In ladder programs, a JUMP (JMP) instruction causes execution to jump to a labeled rung.