代PLC不仅有逻辑运算、计时、计数、顺序控制等功能，还具有数字和模拟量的输入输出、功率驱动、通信、人机对话、自检、记录显示等功能。既可控制一台生产机械、一条生产线，又可控制一个生产过程
目前，大多数PLC仍采用继电控制形式的“梯形图编程方式”。既继承了传统控制线路的清晰直观，又考虑到大多数工厂企业电气技术人员的读图习惯及编程水平，所以非常容易接受和掌握。梯形图语言的编程元件的符号和表达方式与继电器控制电路原理图相当接近。通过阅读PLC的用户手册或短期培训，电气技术人员和技术工很快就能学会用梯形图编制控制程序。同时还提供了功能图、语句表等编程语言
INDRAMAT CONTROLLER CARD B01-11
RELIANCE ELECTRIC MINPAK PLUS DRIVE 14C312
ALLEN BRADLEY DRIVE 160-BA06NSF1
FANUC ELECTRIC DRIVE FRN060G11S-2UX REPAIR SERVICE
GIDDINGS AND LEWIS PI900 MODULE R0
SIEMENS SERVO MOTOR 1FK7080-5AH71-1TA0
FANUC PULSECODER AT301
SIEMENS SERVO MOTOR 1FT6084-8AF71-3EG1
SIEMENS SAFETY SWITCHING UNIT 6FM8090-0AS01
SIEMENS SERVO MOTOR 1FK7083-5AF71-1AH2
RELIANCE ELECTRIC CARD
CONTROL TECHNIQUE UNIDRIVE SP1404
SIEMENS SERVO MOTOR 1FK7063-5AF71-1EA2
FANUC SERVO MOTOR A06B-0514-B541#7076
SIEMENS AC SERVO MOTOR 1FK7060-5AF71-1TA0
EMS DRIVE CIMR-G3U45P5
FANUC BOARD A16BA
AEG MODICON 24 VDC OUTPUT B838 AS-B
SIEMENS SERVOMOTOR 1FK7083-5AH71-1EG0
ABB SERVOMOTOR PS P-LSS-3822, ART NO: 3HAB 3309-1
SIEMENS MAINBOARD 6FC5357-0BB33-0AE2
ABB ROBOTICS SERVO MOTOR 1FT3034-5AZ21-9-Z
MITSUBISHI CONTROLLER CARD MC712-1
ALLEN BRADLEY DRIVE 1370AR-AOB75-E REPAIR SERVICE
ALLEN BRADLEY 1771-P4 120 AC POWER SUPPLY
GEN'L CONTROL MOTOR SS451-TG9
SIEMENS SERVO MOTOR 1FK7060-5AH71-1AB3
MISUBISHI SERVO DRIVE MDS-A-V2-0505 REPAIR SERVICE
SIEMENS SERVO MOTOR 1FT6084-1AH71-3AG1
ALLEN BRADLEY AC SERVO MOTOR MPL-A220T-EJ42AA
GROUPE SCHNEIDER 115VAC OUTPUT MODBUS 170 BDO 542 50
LEROY SOMER MENTOR II DIGITAL DC DRIVE DMV A
ALLEN BRADLEY DRIVE 1336F-B040-AE-EN-HAS1-L6 SERIES C
LENZE INVERTER E82EV152_2C
INDUSTRIAL DRIVES SPINDLE MOTOR V3144-BE26-005
ALLEN BRADLEY FREQUENCY AC DRIVE 1333-AAB SER D+
RELIANCE ELECTRIC MOTOR P48H1311R
INDRAMAT 3-PHASE INDUCTION MOTOR 2AD132B-B060B1-BS23-D2V1
YASKAWA SERVO MOTOR SGMG-44A2ABC
ALLEN BRADLEY DRIVE 1336-B025-EAF-L3
BALDOR ASR SERVO MOTOR BSM6RB5