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
CUTLER HAMMER 10933H10A INTERLOCK NIB
TOSHIBA DU15-T DEVELOPER NIB DU15T
FABCO-AIR GGN-WAD-B PNEUMATIC CYLINDER GGNWA050150DB
LUMENITE SERIES 4220
Siemens 6FC5103-0AD03-0AA0
BUSSMANN FWH-175B FUSE LOT FWH175B
Siemens Simatic S5 6ES5 444-3AA11
Siemens 5SX23 BREAKER DISCONNECT 3 POLE
Siemens Simatic S5 6ES5 943-7UB11
BELLOWS K 24 VDC K
Siemens Simatic S5 6ES5 451-4UA13
Siemens 6FX1122-2AB01
REDINGTON ENGLER HOUR METER NIB
Siemens 6ES7 193-4CD20-0AA0
Siemens 3NC1491 FUSE HOLDER 50A 600V
CUTLER HAMMER CONTROL TRANSFORMER
Siemens 3TF4722-0BB4-ZA01
BOSCH GRIPPER
Siemens 6FC9341-1HC
BARBER COLMAN MAE TEMP CONTROLLER NIB MAE2003
ALLEN BRADLEY 700-PT400A1 CONTROL RELAY 700PT400A1
ENCODER PRODUCTS 260NT01S0020QPP1S6SF1N ACCU-CODER
MOSIER PS02 REED SWITCH LOT NEW
Siemens Servo Motor 1FK7060-5AF71-1EH0 (1EH2)
Siemens Servo Motor ABB PS P-4449 Servo motor robot
RELIANCE ETCE CARD NIB
SIEMENS ANALOG MODULE
LUMENITE SERIES 4220
TRIANGLE PACKAGE MACHINERY 90WB8011AA INTERFACE BOARD
Siemens Simatic S5 6ES5 700-8MA11
SIEMENS 6ESMA21 SERIAL INTERFACE MODULE 6ES55218MA21
Siemens 8WD4320-5AD SIGNAL LIGHT TOWER AMBER
G COIL G
COMPUMOTOR M57-51 SERVO DRIVE NEW M5751
Siemens Simatic S7 6ES7 153-1AA02-0XB0
ALLEN BRADLEY 1771-DMC1 CONTROL COPROCESSOR NIB 1771DMC1
SIEMENS A5E PC620 PC670 HARD DRIVE 10.2GB
Siemens Drive board C8451-A11-A30-2 SMP-E129
Siemens 6FX1122-1AA02
NEWPORT DPMQ2000JDF1 TEMP CONTROLLER
MICRO SWITCH FE-MLS4EB-1020 NIB FEMLS4EB