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。
FANUC BOARD A20BA
SIEMENS SERVO MOTOR 1FK7100-5AF71-1TH0
MITSHUBISHI SERVOMOTOR HA100NCB-S
SIEMENS SERVO MOTOR 1FK7083-5AH71-1GG2
ALLEN BRADLEY DRIVE 1336-C020-EOE-L1
FANUC SPINDLE AMPLIFIER MODULE,A06B-6092-H326#H500
REFU DRIVE RD514B055L-1
ELAU SERVO MOTOR SMP0-45-S1-B0
FANUC BOARD A16BA
INDRAMAT POWER SUPPLY TVD1.
SIEMENS SERVOMOTOR 1FT5076-0AF01-0-Z
SIEMENS SERVO MOTOR 1FK7060-5AF71-1SB5
PANASONIC SERVOMOTOR *HA1NSA
GOULD CONTROLLER CARD 14. REV: D
ALLEN BRADLEY DC CONTROLLER 1387-B-B0A090-B44-AB-SP SER. B
WOOD AC INVERTER X2C2003-0B
SIEMENS SIMATIC BRAKING RESISTOR 6SE7023-2ES87-2DC0
SIEMENS SERVOMOTOR 1FT7087-7SF71-1BA3 REPAIR SERVICE
CUSTOM SERVO DRIVE MPA
FANUC A06B-6096-H301 Servo Amplifier
SIEMENS SERVO MOTOR 1FK7103-5AF71-1SB3
VICKERS COMM BOARD PCB-FSC
FANUC A06B-6093-H101 Servo Amplifier
YASKAWA MOTOMAN BOARD JANCD-MIO04
ALLEN BRADLEY 1305 ADJUSTABLE FREQUENCY DRIVE 1305-BA09A
MAGNETEK GPD 503 DRIVE MVA011
FANUC SERVO MOTOR A06B-0357-B759
ELECTRO-CRAFT BRU-500 DRIVE DM-100
COSEL POWER SUPPLY BOARD LCA10S-5
FANUC CONTROLLER CARD A16BA
INDRAMAT AC SERVO CONTROLLER DDS 2.1-W150-D
ALLEN BRADLEY POWERFLEX 4M 22F-A4P2N103 SER A
MTS SERVO MOTOR,MPM1902FRMM-BM
SIEMENS SERVO MOTOR 1FK7101-5AF71-1EB2
SIEMENS FILTER MODULE 6SL3000-0BE28-0AA0
POWERMAX STEP MOTOR M22NRXA-JDF-NS-00
SIEMENS SERVO MOTOR 1FK7060-5AH71-1SB2