监控设备：小的有数据可监视数据；大的还可能有图形监视器，可通过画面监视数据。除了不能改变PLC的用户程序，编程器能做的它都能做，是使用PLC很好的界面。性能好的PLC，这种外部设备已越来越丰富。
ALLEN BRADLEY AC OUTPUT MODULE 1771-ASB/B
ALLEN BRADLEY SLC 500 PROCESSOR UNIT 1747-L30A SER A
SIEMENS SERVO MOTOR 1FK7083-5AF71-1EB5
ALLEN BRADLEY BULLETIN 1326 AC SERVO MOTOR 1326AB-B505CA
SCHNEIDER ELECTRIC SERVO MOTOR ILS1R852PC1A0
SIEMENS SERVO MOTOR 1FK7063-5AF71-1GA0
SIEMENS SERVO MOTOR 1FT6105-1AC71-3EG1
ALLEN BRADLEY DRIVE 1336-C025-EAF-L3
TEXAS INSTRUMENTS 12/24 VDC OUTPUT MODULE
REXROTH 3-PHASE INDUCTION MOTOR 2AD134B-B35RL1-ES06-D2N1
SIEMENS CONTROL BOARD 2AXIS SIMO DRIVE 6SN1118-0DH21-0AA1
CONTROLLER CARDRA
ALLEN BRADLEY DRIVE 1370AR-BOA72-E REPAIR SERVICE
ALLEN BRADLEY BOARD 135230 (FOR ALLEN BRADLEY 1395 DC DRIVES FROM 50 TO 350 HP)
FANUC SERVO AMPLIFIER MODULE ,A06B-6079-H203
FANUC SERVOMOTOR A06B-0502-B206 REPAIR SERVICE
SIEMENS CONTROLLER CARD 6DD1641-0AC0 EB11
ALLEN BRADLEY DRIVE 160-BA06NSF1
SIEMENS SIMATIC BRAKING RESISTOR 6SE7023-2ES87-2DC0
SCHNEIDER TSX QUANTUM AC OUPUT NEW IN BOX 140DAO85300
ALLEN BRADLEY POWER SUPPLY MODULE 1746-P2 SER B
SIEMENS SERVOMOTOR 1FT5062-0AF01-1-Z
ALLEN BRADLEY POWERFLEX 70 20AE6P1A0AYNNNNN
OMRON SAFETY LIGHT CURTAIN AS IT IS F3SN-A0757P25-L
AVG PANELVIEW EZ LOMT
FANUC AC SPINDLE SERVO UNIT A06B-6055-H218
SIEMENS SERVO MOTOR 1FK7083-5AH71-1GH2
FANUC ENCODER (BRAND NEW, OPEN BOX) AT302
ALLEN BRADLEY CONDUCTOR 140M-C2E-C10
REXROTH INDRAMAT SERVO DRIVE CONTROLLER RD51.1-7N-003-L-NN-FW
SIEMENS PERMANENT MAGNET MOTOR 1FT5102-0AA01-2
NACHI SERVO AMPLIFIER AUXL-111C-A0 REPAIR SERVICE
MITSUBISHI PLC INPUT UNIT A1SX41-S2
ALLEN BRADELY BULLETIN 1336CONSTANT TORQUE 3-PHASE AC DRIVE 1336-B030-EAF-FA2-L3
SIEMENS SERVO MOTOR 1FK7060-5AF71-1GH5
SIEMENS SERVO MOTOR 1FK7083-5AF71-1EA0
HEIDENHAIN ENCODER ERN 1185.