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。
MAYR PRIMO 1+1 BASIC SERVO DRIVE
INDRAMAT SERVO DRIVE HDS04.2-W200N-HS56-01-FW
SIEMENS SERVO MOTOR 1FK7060-5AH71-1EB2
MAGNETEK DRIVE DS440
SIEMENS SINUMERIK INTERFACE BOARD
FANUC SERVO MOTOR A06B-0314-B031#7075
TEXAS INSTRUMENT CONTROLLER CARD
ALLEN BRADLEY SERVO MOTOR MPL-A430H-SJ22AA
SEW EURODRIVE MOVITRAC 31C
SIEMENS SERVO MOTOR 1FK7042-5AK71-1GA3
EMERSON COMMANDER SK DRIVE SKB
SIEMENS SITOP POWER 10 6EPBA00
SIMATIC S5 1P6ES5095-8MB02
SUMMER GEAR BOX NR110
TRANSFORMER A80L
ALLEN BRADLEY DRIVE 1336F-A030-AA-EN REPAIR SERVICE
SIEMENS SERVO MOTOR 1FK7083-5AF71-1AA2
ALLEN BRADLEY AC SERVO CONTROLLER 1394C-AM07 SER C
SIEMENS CONTROLLER CARD 6SN1118-0DK23-0AA0
FANUC POWER SUPPLY A06B-6115-H001
SIEMENS CIRCUIT BOARD 6SC6100-0NA20
FIDIA M30 DART 1 CONTROL BOARD ART1,2
CURTLER HAMMER POWEREED RELAY D40RPB-Q2
SIEMENS POWER BOARD 6SC6108-0SE01
ALLEN-BRADLEY PLC-5/12 PROCESSOR 1785-LT3
SIEMENS SIMOVERT VC DRIVE 6SE7031-1FF60-Z
ALLEN BRADLEY AC SERVO MOTOR 1326AB-C2ED
INDRAMAT SERVOMOTOR 2AD104C-B350A1-CS06-E2N2
ALLEN BRADLEY BULLETIN 2094 9A AXIS MODULE 2094-BM01
ELECTROCRAFT SERVOMOTOR F-4075-Q-04-AA
SIEMENS SERVO MOTOR 1FK7063-5AF71-1GA0
KUKA SERVO MOTOR 1FK6100-8AF91-1ZZ9-Z S09
ALLEN BRADLEY DRIVE 1370AR-BOB75-E REPAIR SERVICE
ALLEN BRADLEY SERVOMOTOR MPL-B430P-SJ22AA
APEX DYNAMICS,INC. GEARBOX AF100-S1-P0
SANYO DENKI SERVO MOTOR 20BM120MXP41 (ENCODER: LMA-250BM-S88A )
ALLEN BRADLEY ULTRA 3000 DRIVE 2098-DSD-HV030-SE PART NO: 196462 SER B