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。
MITSUBISHI AC SERVO DRIVE MR-700BN-UE
SEW-EURODRIVE MDV60A0110-5A3-4-00
FANUC SERVOMOTOR A06B-0127-B675
SIEMENS SERVO MOTOR 1FK7083-5AH71-1SH3
ALLEN BRADLEY CONDUCTOR 140M-C2E-B40
PARKER CUSTOM SERVO MPA-07 DRIVE
BOSCH 13 SLOT RACK RACK-GG
ALLEN BRADLEY VDC INPUT MODULE 1771-IBD
MOOG SERVO MOTOR GA
ALLEN BRADLEY 1336 IMPACT FORCE DRIVE 1336E-B050-AE-EN-HA2-L8E
SIEMENS SINAMICS S120 COMPACT FLASH CARD 6SL3054-0TA01-1BA0
SIEMENS SERVO MOTOR 1FT6086-1AF71-2EG1
GENERAL ELECTRIC CONTACTOR TED134020
ALLEN BRADLEY SERVO MOTOR 1326AB-C3EB
ALLEN BRADLEY DRIVE 1336VT-B050-EAS REPAIR SERVICE
SIEMENS SERVO MOTOR 1FT5108-0AA01-2-Z
ABB ROBOTIC SERVO MOTOR 1FT3101-5AZ21-9-Z
INDRAMAT SERVO MOTOR MAC90B-0-JD-1B/110-A0/J625/S01
ALLEN BRADLEY CONSTANT HORSEPOWER MODULE 104990
SIEMENS SERVO MOTOR 1FT6044-1AF71-1EH1
PACIFIC SCIENTIFIC SERVO MOTOR R34JENC-R2-NS-NV-00
SANYO DENKI SERVOMOTOR MC401NS 302KNN19
ALLEN BRADLEY DRIVE 1370AR-BOA72-E REPAIR SERVICE
CUTLER HAMMER MOTOR CIRCUIT INTERRUPTER MAGNETIC TRIP ONLY HMCP100R3C
SIEMENS CONNECTOR CABLE 6ES5 762-2AA
MITSUBISHI SERVOMOTOR HA103NC-S
FANUC A04B-0234-C409
ALLEN BRADLEY SLIM POWER RAIL 2094-IN001X-XX-X
SIEMENS SERVO MOTOR 1FK7060-5AF71-1SH0
BECKER VACUUM BLOWER SVDSF
YASKAWA SERVOMOTOR SGMPH-01A1A-YR21
LTN ENCODER G58SSCDBI
SIEMENS SIMATIC S7 6ES7 407-0KA01-0AA0
DUFF NORTON EUROPE 45 RTE 1060I
SIEMENS SAFETY SWITCHING UNIT 6FM8090-0AS01
SIEMENS SERVO MOTOR 1FK7040-5AK71-1AB0
ABB BOARD DSQC 314B