用来执行诸如逻辑，顺序，计时，计数与演算等功能，并通过数字或类似的输入/输出模块，以控制各种机械或工作程序。一部数字电子计算机若是从事执行 PC 之功能着，亦被视为 PC，但不包括鼓式或类似的机械式顺序控制器。”以后国际电工委员会(IEC)又先后颁布了

CONE DRIVE HU60-2 GEAR REDUCER, RATIO 50:1,

RANSBURG LECU5004-12 CONTROLLER NIB

ALLEN BRADLEY 1775-L3 MAIN PROCESSOR, NIB

FLOWSERVE 4MSX7AT SUBMERSIBLE PUMP,

LINCOLN ELECTRIC INVERTEC STT II MIG WELDER, SURFACE TE

CUTLER-HAMMER SERIES C 3-POLE 1200A 600V MOLDED CASE SW

CUTLER-HAMMER WESTINGHOUSE 3-POLE 1200A 600V MOLDED CAS

CUTLER-HAMMER SERIES C 3-POLE 1200A 600VAC MOLDED CASE

REXROTH INDRAMAT 3-PHASE INDUCTION SERVO MOTOR 2AD100D-

ALLEN BRADLEY PANELVIEW 1000 OPERATOR INTERFACE 2711-T1

INDRAMAT 3-PHASE INDUCTION SERVO MOTOR 2AD100D-B050B1-​A

EASOM FORCE CONTROL MAGNA SHEAR TWO SPEED DRIVE MS1-D2C

FANUC ROBOTICS 2.8kW ALPHA SERIES a12/3000 AC SERVO MOT

ALLEN BRADLEY 25HP/18.5kW HIGH PERFORMANCE AC SPINDLE M

FANUC ROBOTICS AC SPINDLE SERVO UNIT A06B-6064-H312#​H55

EDCO EDCO CPU10-20KE GASONLINE SELF-PROPELLED CONCRETE

ALLEN BRADLEY 2755-LD4C4 HIGH PERFORMANCE VISIBLE LASER

FANUC ALPHA SERIES a8 AC SPINDLE MOTOR A06B-0855-B190#​3

ATLANTA 58-84-007 SERVO-DRIVE SYSTEM, I 6.75, P 4.25 KW

GE FANUC ALPHA SERIES a30/6000 SPINDLE MOTOR A06B-0860-