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
ELPAC POWER SYSTEMS UPS
ABB CONTROL BOARD DS0C331-3HAB
SIEMENS SERVO MOTOR 1FK7103-5AF71-1TG2
CINCINNATI MILACRON CARD CMACO A
SIEMENS SERVO MOTOR 1FT6102-1AC71-3EH1
SIEMENS CONDUCTOR IEC60947VDE0660
SIEMENS PERMANENT MAGNET MOTOR 1FT5102-0AC01-0-Z
ALLEN BRADLEY DRIVE 1336-C025-EAF-L1
SIEMENS CONTROLLER CARD 6FC5357-0BB11-0AE0
ALLEN BRADLEY DRIVE 1336-C020-EOE-L1
SIEMENS SERVO MOTOR 1FT6084-1AF71-3EH1
SIEMENS SERVO MOTOR 1FK7103-5AF71-1EA3
SIEMENS SERVO MOTOR 1FK7063-5AF71-1GB0
SIEMENS SERVO MOTOR 1FK7022-5AK71-1AB3
TRANSFORMER Z
FANUC SPINDLE FAN A90LR
ALLEN BRADLEY HIGH PERFORMANCE AC MOTOR 8720SM-075S6SAS1
SIEMENS SERVO MOTOR 1FK7042-5AK71-1TG0
GOULD CONTROLLER CARD 14. REV: D
ALLEN BRADLEY MODULE 160-BA03NSF1P1 SER C
YASKAWA SERVO AMPLIFIER SGDR-SDA710A01B
SIEMENS DC INVERTER 6SE7031-2TF60
INDRAMAT DKR DRIVE DKR02.1-W300B-BE79-01-FW
MAGNETEK DRIVE 71616-G3M40301
INDRAMAT PERMANENT MAGNET MOTOR MAC112D-0-ED-3-C/130-A-2/S013
ALLEN BRADLEY AC SERVO MOTOR MPL-B330-MJ72AA
SIEMENS SERVO MOTOR 1FK7060-5AF71-1PH0
SQUARE D LIGHTING CONTACTOR 8903 SM0 12 A
ALLEN BRADLEY DRIVE 1336S-BX040-AF-EN REPAIR SERVICE
BOSCH SERVOMOTOR SD-B4.070.030-14.000
ALLEN BRADLEY DC DRIVE 1370AR-A0A71
INDUSTRIAL DRIVES SPINDLE MOTOR V3144-BE26-005
MITSUBISHI AC SERVO DRIVE MR-SA102
ABB CONTROL BOARD DS0C331-3HAB 162
INDRAMAT AC SERVO POWER SUPPLY KDN-1.
ALLEN BRADLEY SLC500 INPUT MODULE 1746-IB32 SER C
SEW-EURODRIVE SERVO MOTOR WAF20DT71D4
SIEMENS DRIVE 6FC5247-0AA00-0AA0
KUKA POWER SUPPLY MODULE PS
PAPST AC FLAT PACK BLOWER, 180 X 40MM RG
ALLEN BRADLEY OUTPUT MODULE 1771-OAD