如果按应用类型来划分，可编程序控制器的应用主要有以下三种：
(1) 开关逻辑和顺序控制：这是可编程序控制器基本的控制功能，在工业场合应用广泛，可代替继电器控制系统。开关量逻辑控制不但能用于单台设备，而且可用于生产线上。
(2) 过程控制：PLC通过模拟量I/O模块，可对温度、流量、压力等连续变化的模拟量进行控制。大中型PLC都具有PID闭环控制功能并已广泛地用于电力、化工、机械、冶金等行业。
(3) 运动控制：PLC可应用于对直线运动或圆周运动的控制，如数控机床、机器人、金属加工、电梯控制等。
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SIEMENS SIMATIC S7 6ES7 321-1BL00-0AA0 DIGITAL IN * QUANTITY
SIEMENS SIMATIC S7 6ES7 322-1HF01-0AA0 SM322 OUTPUT MODULE
SIEMENS SIMATIC S7-300 6ES7 312-1AE14-0AB0 CPU WITH MPI INTERFACE
SIEMENS SIMATIC TI305-55N 14-30VAC INPUT MODULE
SIEMENS SIMODRIVE 6SN1112-1AC01-0AA1 UEB * QUANTITY
SIEMENS SIMODRIVE 6SN1112-1AC01-0AA1 UEB Ver.A * QTY
SIEMENS SIMODRIVE D460/170 MRE-GCEF 100HP DC TESTED
SIEMENS SIMODRIVE LT MODULE 6SN1123-1AA00-0BA1 25A
SIEMENS SIMODRIVE LT MODULE 6SN1123-1AA00-0CA1 50A QTY
SIEMENS SIMODRIVE PW MODULE 6SN1113-1AB01-0BA1 Ver.C
SIEMENS SIMOREG A1-106-100-522 R1-106-100-522 TOP BOARD QUANTITY
SIEMENS SIMOREG A1-106-150-500 DC DRIVE QUANTITY TESTED
SIEMENS SIMOREG A1-306-200-005 COMM BOARD QUANTITY
SIEMENS SINEC L2 6ES5 762-1AA21 BUS CONNECTOR
SIEMENS SINUMERIK 6FC9320-5DC00 ELECTRONIC HANDWHEEL
SIEMENS SIRIUS 3R 3RT1033-1BB40 CONTACTOR 24VDC COIL
SIEMENS SIRIUS 3RB1015-2NBO CLASS 20 OVERLOAD 3-12A
SIEMENS SIRIUS 3RB1026-1QB0 CLASS 10 OVERLOAD 6-25A
SIEMENS SIRIUS 3RB1026-1SB0 CLASS 10 OVERLOAD 3-12A
SIEMENS SIRIUS 3RB12 3RB1246-1EG20 OL 25-100A 120VAC
SIEMENS SIRIUS 3RB12 3RB1246-1EG20 OL 25-100A 120VAC
SIEMENS SIRIUS 3RS1142-1GD80 TEMPERATURE SENSOR MONITOR RELAY - QUANTITY
SIEMENS SIRIUS 3RT1036-1BB44 50HP CONTACTOR 24VDC QUANTITY
SIEMENS SIRIUS 3RT1044-1AG20 60HP CONTACTOR 110V * QUANTITY
Siemens Sirius 3TK2830-1CB30 Safety Relay
SIEMENS SITOP 6EP1 331-1SL11 POWER SUPPLY 2A TESTED
SIEMENS SITOP POWER 10 6EP1 334-1AL11 24VDC 10A POWER SUPPLY QUANTITY
SIEMENS TEXAS INSTRUMENTS 545-1101 CPU MODULE 28K WORD MEMORY PID 2COMM PORTS
SIEMENS TEXAS INSTRUMENTS 545-1101 CPU MODULE 28K WORD MEMORY PID 2COMM PORTS
SIEMENS TI 505-4232A 110VAC INPUT MODULE *
SIEMENS TI 505-4716 DC OUTPUT MODULE *
SIEMENS T-220VAC OUTPUT MODULE * LNC
SIEMENS TI 505-4908 RELAY OUTPUT MODULE *
SIEMENS TI 505-5190 6MT CHANNEL CONTROLLER
SIEMENS TI 505-7002 E-STAND02 HI SPD COUNTER *NIOB
SIEMENS TI 505-7016 ANALOG IO MOD BIPOLAR HI SPD *NIOB
SIEMENS TI 505-7354 PEERLINK COMM MODULE *
SIEMENS TI 555-1101 SEALED CPU MODULE
SIEMENS TI 555-1101 CPU MODULE E-STAND: 03 REV.H
SIEMENS TI305-01NT 305-01NT 9310 IN/OUT DC/RELAY MODULE
SIEMENS TI315-DR 24VDC SIMATIC CPU MODULE
SIEMENS U01JLD6 120VAC UNDER VOLTAGE TRIP
SIEMENS-OPM2 6SE3290-0XX87-8BF0 CLEAR TEXT DISPLAY IN BOX
SIEMON MX5-F02B T568A/B ETHERNET RJ45 CONNECTORS QUANTITY
SIERRA INSTRUMENTS 810M-2-MP QUANTITY 0-30 SLPM GAS-TRAK FLOW CONTROLLER
SIERRA INSTRUMENTS 810M-NR-2-MP 0-10 SLPM MASS-TRAK MASS FLOW CONTROLLER
SIERRA INSTRUMENTS 824-13-OV1-PV2-V1-MP 0-30 SLPM TOP-TRAK FLOW CONTROLLER
SIERRA INSTRUMENTS 826-NX-OV1-PV2-V1-MP QUANTITY 0-110 TOP-TRAK FLOW CONTROLLER
SIERRA INSTRUMENTS 827-NX-OV1-PV2-V1-MP QUANTITY 0-100 TOP-TRAK FLOW CONTROLLER
SIGNAL TRANSFORMER 241-7-16 TRANSFORMER
SIGNAL TRANSFORMER DP-241-6-24 115/230V 50/60HZ 24VCT 30VA TRANSFORMER
SIMENS SIRIUS 3TK2827-1BB40 SAFETY RELAY
SIMPLEX GRINNELL TYCO 4255-51 135 F. IN BOX QUANTITY
SIMPLEX GRINNELL TYCO 4255-54 STANDARD HEAT DETECTOR
SIMPSON 109ET 10-80VDC 03618 ELAPSED TIME METER 6 DIGIT QUANTITY
SIMPSON ELECTRIC 3344 D21637 DUAL SET POINT AC METER 250VAC TESTED
SINGER M451152 1/4HP 1725RPM 115VAC AC SEWING MOTOR ANTIQUE
SIS SILICON SYSTEMS PT5968-2 990204 6326 3D PRO 8MB AGP VIDEO CARD
SIXNET VERSATRAK IPM2M INDUSTRIAL RTU / CONTROLLER PL-VT-IPM2M W/ BASE UNIT
SKINNER VALVE COIL CMB.2238-N18 * QUANTITY
SMARTLINK FH100-8SE 8-PORT NWAY SWITCH 100Mbps
SMC ZSE1-01-55CL DC12-24V 0-101KPA PNP 80mA VACUUM SWITCH
SMC 0-100 PSI / 0-7 kgf/cm^2 1/8" PRESSURE GAUGE
SMC 30-VXZ2230-02N-5D SOLENOID VALVE 0.7MPa 24VDC / 0.4A
SMC AN402 PNEUMATIC SILENCER
SMC AS 2210F FLOW CONTROL PNEUMATIC VALVE
SMC AS 3210F FLOW CONTROL PNEUMATIC VALVE QUANTITY
SMC AS3000 MANUAL CUTOFF VALVE * QUANTITY
SMC AUTO SWITCH IN-LINE 3WIRE PNP SOLID STATE
SMC AV4000 0.2-1MPa SOFT START-UP VALVE
SMC AW30-N03H-Z PRESSURE REGULATOR FILTER & VHS30-N03-Z SHUT OFF VALVE ASSEMBLY
SMC AW4000-04G PRESSURE FILTER REGULATOR
SMC BE30 BRACKET ASSEMBLY QUANTITY
SMC CBA2D63-150-HN PNEUMATIC CYLINDER
