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 AC SERVO CONTROLLER TDM 1.W1-000
BALDOR SERVO MOTOR BSM80N-275AA
ABB DRIVE DSQC346A, 3HABE
INDRAMAT SERVO MOTOR MAC112D-0-ED-4-C/130-A-2/W1520LV/S013
HAMMOND POWER TRANSFORMER Q003PEKF
TOYO COOLING FAN UT655D
ALLEN BRADLEY POWER SUPPLY CHASSIS 1771-PSC
WEESTINGHOUSE CIRCUIT BREAKER EB3040
SIEMENS SINUMERIK 840C,6FC5100-0AB01-0AA1
FANUC SERVO MOTOR A06B-0372-B160-R
SIEMENS SIMODRIVE CONTROLLER CARD 6SN1121-0BA13-0AA0
ALLEN-BRADLEY ISOLATED AC INPUT MODULE 1771-ID16 SER B
SIEMENS MICROMASTER 440 DRIVE 6SE6440-2UE32-2DA1
AVG PANELVIEW EZ LOMT
YASKAWA ELECTRIC POWER SUPPLY UNIT JZRCR-XPU09
GIDDINGS AND LEWIS CPU INTERFACE MODULE M. R1
SIEMENS SERVO MOTOR 1FK7083-5AF71-1AH0
CONTROL TECHNIQUES DRIVE CDE150-R
SCHNEIDER TSX QUANTUM DC IN 140DDI84100
ABB CIRCUIT BOARD DSQC 259
SIEMENS SERVO MOTOR 1FK7100-5AF71-1SA5
SIEMENS SERVO MOTOR 1FK7080-5AH71-1TG3
ALLEN BRADLEY BULLETIN 1392 HIGH PERFORMANCE AC DRIVE 1392-B150-RL-MC
SIEMENS SIMATIC S7 6ES7322-1BH01-0AA0
ALLEN BRADLEY DRIVE 1336-C040-EAG REPAIR SERVICE
TELEMECANIQUE DRIVE ATV61H075N4
INDRAMAT PROGRAMMING MODULE MOD1/1X
CUSTOM SERVO MOTORS MPM
HEIDENHAIN ENCODER CHECKER VRZ 460
BAUMULLER DRIVE BUM61-VC-AE-1022
NACHI AC SERVO MOTOR MFM55203V
SIEMENS SERVO MOTOR 1FK7080-5AF71-1GA0
INDRAMAT CONTROLLER CARD
EC&G ENCODER CSM-0200
FANUC AC SPINDLE MOTOR A06B-0754-B190#3000
SCHNEIDER MODICON 140CPS12400
INDRAMAT AC SERVO CONTROLLER TDM 1.W1-000
FANUC SERVO AMPLIFIER A06B-6066-H011
SIEMENS SERVO MOTOR 1FK7083-5AH71-1AB2
GE ADJUSTABLE SPEED DRIVE 7VZFX103CD01
CUSTOM SERVO MOTOR MPM-1902FRMM-AM