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。
SIEMENS SERVO MOTOR 1FK7063-5AF71-1AG3
SIEMENS SERVO MOTOR 1FK7063-5AF71-1TA3
EMERSON POSITIONING SERVO DRIVE M
INLAND KOLLMORGEN M4 M-503 MOTOR
SIEMENS 3 PHASE CHOKE 1P6SN1111-0AA00-0BA1
YASKAWA SERVOMOTOR SGMRS-37A2A-YR11
POWERTEC MODULE
ALLEN BRADLEY AC SERVO MOTOR MPL-A430P-MJ22AA,
SIEMENS SERVO MOTOR 1FK7042-5AF71-1SA2
SIEMENS SERVO MOTOR 1FK7083-5AH71-1GG0
MITSUBISHI AC SERVO MOTOR HA-SAS52B
NUM RLAYAGE 24S A
ALLEN BRADLEY SERVOMOTOR MPL-A430P-MJ24AA
MITSUBISHI SPINDLE DRIVE UNIT MDSASPA300
BALDOR MICROFLEX DRIVE FMH2A09TR-EN43EZ
CONTROL TECHNIQUES
ALLEN BRADLEY 10 SLOT RACK 1746-A10
ABB CONTROL BOARD DS0C331-3HAB
CINCINNATIMILACRON ESD SERVICE PART A
SIEMENS SERVO MOTOR 1FK7083-5AF71-1SB3
SIEMENS BRUSHLESS SERVO MOTOR 1FK6103-8AF71-1AG0
YASKAWA POWER SUPPLY CPS-18FB
ALLEN BRADLEY SERVO DRIVE 8520-1S5A-BAT-EX4-T1-Y-4-5-7 SER B
ALLEN BRADLEY POWER SUPPLY 1771-PS7/C
ALLEN BRADLEY POWERFLEX 70 20AE6P1A0AYNNNNN
BALDOR DC SERVOMOTOR MT-2250-ACYCN
FANUC DC SERVO MOTOR A06B-0551-B213
FANUC PC CASSETE B A02B-0076-K002
FIDIA M30 CONTROL BOARDS FBX1
ALLEN BRADLEY DRIVE 2098-DSD-HV100X-DN, PART NO: SERIES B
PACIFIC SCIENTIFIC MOTOR AND CONTROL DIVISION H33NLHB-LNW-NS-00
FANUC PULSE CODER AT001
INDRAMAT POWER SUPPLY HVE04.2-W075
CONTROL TECHNIQUE UNIDRIVE SP1404
CONTROLER CARD F3IXI33PRUAKGI
BAUMULLER SERVO MOTOR DSG 71-S
TELEMECANIQUE CONDUCTOR XPS-AT