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。
INDRAMAT CONTROLLER CARD DAA1.A20-06
CONTROL TECHNIQUE DYNAMIC BRAKING CDII DBV
BAUMULLER SERVO MOTOR DS56-M45-UL
ALLEN BRADLEY POWER SUPPLY 1746-P2 SER C
ALLEN BRADLEY DRIVE 1336S-B050-AA-ES REPAIR SERVICE
ELECTROCRAFT SERVO MOTOR R-H00AA
ALLEN BRADLEY SERVO DRIVE 1398-DDM-019X
FANUC A04B-0234-C409
SIEMENS MODULE 6SN1145-1A01-0AA1
FANUC POWER SUPPLY UNIT A06B-0234-C214
SIEMENS SINAMICS SEN MOD SME20 INC ENC0 SIN/COS (1VP-P) 6SL3055-0AA00-5EA3
ALLEN BRADLEY INPUT MODULE 1771-IAD
ALLEN BRADLEY DRIVE 1336-B040-EJG-L2
SIEMENS SERVO DRIVE D165-G200/12
FANUC BOARD A16BA
ALLEN BRADLEY BOARD 135230 (FOR ALLEN BRADLEY 1395 DC DRIVES FROM 50 TO 350 HP)
INDRAMAT MAGNET MOTOR MKD090B-035-KG1-KN
INDRAMAT SERVOMOTOR MAC071B-0-FS-4-C/095-B-1/WI574LV
INDRAMAT SERVO MOTOR MDD112B-N-030-N2M-130PB0
SIEMENS CONTROLLER CARD 6FX1122-3CA01
SIEMENS SIMOREG MICROPROCESSOR D.C. DRIVE 6RAZ472-ZFV62
KOLLMORGEN INLAND DC MOTOR TTA
ALLEN BRADLEY SMC DIALOG PLUS DRIVE 150-B24NCR SER A
SIEMENS SERVO MOTOR 1FT5024-0AF01-1-Z
FANUC CONTROLLER CARD A16BA
TOYO COOLING FAN UT655D
YASKAWA ELECTRIC SERVO PACK CONTROLLER JUSP-ACP25JAB
ALLEN BRADLEY 5 A AXIS MODULE 2094-AMP5
ALLEN BRADLEY TRANSFORMER LR40484
FANUC SERVO SPINDLE UNIT A06B-6055-H208
SIEMENS SERVO MOTOR 1FT6086-1AH71-4EH1
SIEMENS SIMATIC S5 6ES5 943-7UB11
SIEMENS SERVO MOTOR 1FK7103-5AF71-1AA5
FANUC SERVOMOTOR A06B-0115-B275#0021
ABS SUPER MOTOR 69BMO14CBRY1
MISUBISHI SERVO DRIVE FR-SE-55K-UL REPAIR SERVICE
ALLEN BRADLEY 1774-LB2 PROCESSOR MODULE AS IS