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
SECO DC DRIVE MODULE M
YASKAWA SERVOMOTOR SGMGH-13A2A-YR13
SIEMENS SIMATIC S7 6ES7 322-1HH00-0AA0
PARKER SERVO MOTOR 640
AEG SERVO MOTOR CGD20-T
INDRAMAT SERVO DRIVE TDM 1.W1
SCHNEIDER MODULE TSX CAY21
INDRAMAT SPINDLE MOTOR 2AD132D-B350B1-BD03-B2N1
FANUC AC SERVO MOTOR A06B-0513-B001
INDRAMAT 3-PHASE INDUCTION MOTOR 2AD100D-B050A4-AS03-A2N1
FANUC SERVOMOTOR A06B-0147-B175#7008 REPAIR SERVICE
SIEMENS SERVO MOTOR 1FT6086-1AH71-2AG1
SCHNEIDER DISCRETE I/O MODULE TSXEMF16DT2
ALLEN BRADLEY DRIVE 1336VT-B060-EAS-L2 REPAIR SERVICE
FANUC SERVODRIVE A06B-6091-H118
FANUC SERVO MOTOR A06B-0505-B001#7000
CUTLER HAMMER INDUSTRIAL CIRCUIT BREAKER,FDB3080L
CINCINNATI ELECTROSYSTEMS PLC BOARD A
SIEMENS SERVO MOTOR 1FT6064-1AH71-3EG1
INDRAMAT DRIVE TDM1.W1-000
ALLEN BRADLEY DRIVE 1336VT-B050-EOS-L1 REPAIR SERVICE
YASKAWA AC SERVO MOTOR WITHOUT ENCODER USAMED-03MA10E
ABB DRIVE ACSB
ALLEN BRADLEY INPUT MODULE 1794-IV16 SER.A
MITSUBISHI PLC OUTPUT UNIT A1SY60
SIEMENS CONTROLLER CARD 6SN1118-0DK21-0AA1
INDRAMAT BRUSHLESS SERVO MOTOR MAC 90C-0-GD-2-C/110-A-0/S01 J1250
SIEMENS SERVOMOTOR 1FT5066-0AK01-2
FANUC AC SPINDLE MOTOR A06B-0755-BR
SIEMENS SERVO MOTOR 1FK7083-5AF71-1TG3
CUTLER HAMMER CONTACTOR C10EN3 SERIES CB1
SIEMENS SERVO MOTOR 1FT5102-0AC01-2-Z
EATON IDT
FANUC BOARD A20BA
SIEMENS REGULATOR BOARD C98043-A1086-L11
GE FANUC CONTROLLER CARD 1C693MDL740C
TEXAS INSTRUMENT CONTROLLER 305-02B
GE SPECTRA CIRCUIT BREAKER SRPE100A
MINISAFE 4600 MS46SRQ1-R-NC-FP
SIEMENS SERVO MOTOR 1FK7083-5AF71-1GB5
CINCINNATIMILACRON ESD SERVICE PART A