输入输出设备：它用以接收信号或输出信号，便于与PLC进行人机对话。输入的有条码读入器，输入模拟量等。输出的有打印机、编程器、监控器虽也可对PLC输入信息，从PLC输出信息，但输入输出设备实现人机对话更方便，可在现场条件下实现，并便于使用。随着技术进步，这种设备将更加丰富。
INDRAMAT PERMANENT MAGNET MOTOR MHD112C-024-NP0-AN
ACOPIAN UNREGULATED POWER SUPPLY U24Y1000
YASKAWA XTRADRIVE XD-08-MNBF
INDRAMAT SERVO MOTOR MDD093-N-030-N2L-130GA0
SIEMENS SIMATIC S5 6ES5420-4UA12
FANUC A06B-6088-H215#H500
DEMAG SERVOMOTOR KBA 71
INDRAMAT AC SERVO CONTROLLER KDS1.W1-220
ALLEN BRADLEY AC SERVO MOTOR 1326AB-B730E-S2L
YASKAWA AC SERVOMOTOR USAFED-13FS2
ALLEN BRADLEY INPUT MODULE 1772-LV
ALLEN BRADLEY 22B-D2P3N104
MITSUBISHI PROGRAMMABLE CONTROLLER FX-4AD
ALLEN BRADLEY DRIVE 1391B-ESAA15-AQB
POWERTEC BRUSHLESS 1000A DRIVE C0101AS4CH007NNNN
VARIABLE FREQUENCY INVERTER CD 400
SIEMENS SERVO MOTOR 1FK7083-5AF71-1EA5
ABB DRIVE ACSB
ALLEN BRADLEY DRIVE MOTOR CONTROLLER 150-A24NCD
SIEMENS SERVO MOTOR 1FK7083-5AF71-1GB5
FANUC CONTROLLER CARD A20BE
SY/MAX MODULE ROM 122
FANUC AC SERVO MOTOR A06B-0377-B175
TELEMECANIQUE PREVENTA GSK3LB
YASKAWA AC SERVO MOTOR SGMJV-04A3A61
ALLEN BRADLEY SLC 500 PROCESSOR UNIT 1747-L514 SER B
SIEMENS SERVO MOTOR 1FK7103-5AF71-1GH5
AVG PANELVIEW EZ LOMT
CINCINATI MILACRON MOTOR 1PH6161-4NF00-Z
SIEMENS SERVO MOTOR 1FK7060-5AF71-1EB3
ABB INDUSTRY BRAKE MODULE ACS-BRK-C
ALLEN BRADLEY OPERATOR INTERFACE MONOCHROME 9/SERIES (AS IS) 8520-MOP
SIEMENS MOTION CONNECT SIGNAL CABLE (4M) 6FX8002-2CB54-1AE0
ALLEN BRADLEY DRIVE 1336-B030-EAF-L2
ALLEN BRADLEY DRIVE 1336VT-B050-EAS-FA REPAIR SERVICE
FANUC SERVO MOTOR A06B-0513-B005
SQUARE D STARTER 8536-AO-2