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 BRADELY AC SERVO MOTOR 1326AB-B2C-11
FANUC CONTROLLER CARD A16BA
ABB SERVOMOTOR 1FT3101-5AZ21-9-Z (ART NO: 3HAA 0001-XH)
INDRAMAT CONTROLLER CARD DAE 1.1, A19-04
KUKA AC SERVO MOTOR 1FK6081-6AF71-1ZZ9-ZS47
FANUC AC SPINDLE MOTOR A06B-0754-B101#3000
SIEMENS SERVO MOTOR 1FK7083-5AH71-1TH0
SCHNEIDER MODICON 140CPS12400
Siemens 6SN1123-1AB00-0AA0 Power Module
LINCOLN ELECTRIC POWER WAVE 450 10608
ABB SERVO MOTOR 3HAC
SIEMENS SERVO MOTOR 1FT5074-0AF71-1-Z
SIEMENS SERVO MOTOR 1FK7060-5AH71-1EB2
LUTZE MODULE 743530
FANUC SERVOMOTOR A06B-0505-B002#7008
YASKAWA MOTOMAN INTERFACE MODULE SGDR-AXA01A
ALLEN BRADLEY SLC 500 PROCESSOR UNIT 1747-L531 SER E
ALLEN BRADLEY SERVO MOTOR MPL-A330P-SJ24AA
RELIANCE ELECTRIC SERVOMOTOR H-4050-P-H00AA
FANUC AC SERVO MOTOR A06B-0506-B251
ALLEN BRADLEY SMC FLEX 150-F480NCD SER A
SCHNEIDER MODICON TSX QUANTUM MODBUS PLUS 140NOM21100
INDRAMAT SERVOMOTOR MAC112D-0-HD-3-C/130-A-2/S013
ALLEN BRADLEY POWERFLEX 4M SERIES A 22F-A4P2N113
BALDAR ADJUSTABLE SPEED DRIVE ID15H4250-E0
SIEMENS SERVO MOTOR 1FK7103-5AF71-1SA2
BALDOR DC MOTOR M-4090-ALYCE
ROSS MODULE 2768C4901
SIEMENS CONDUCTER 3VE3000-2PA00
NUMATICS ACUATOR P1CL-08A1B-AAA0
SIEMENS SERVOMOTOR 1FK7042-5AK71-1GG5
ALLEN BRADLEY DRIVE 1336-B030-EAF-L1
SIEMENS SERVO MOTOR 1FK7101-5AF71-1GB2
SIEMENS SERVO MOTOR 1FK7060-5AH71-1AA0
ACME TRANSFORMER TA
SIEMENS SERVO MOTOR 1FK7101-5AF71-1AH2
SUN MICROSYSTEM DPS-680CB A REV