从工作方式上看，在继电器控制电路中，当电源接通时，电路中所有继电器都处于受制约状态，即该吸合的继电器都同时吸合，不该吸合的继电器受某种条件限制而不能吸合，这种工作方式称为并行工作方式。而PLC的用户程序是按一定顺序循环执行，所以各软继电器都处于周期性循环扫描接通中，受同一条件制约的各个继电器的动作次序决定于程序扫描顺序，这种工作方式称为串行工作方式。

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产品价格以电话或者QQ询价为准，发布价格不做参考

COMCABLES 18P 1U 3 PANEL RACK MOUNT ENCLOSURE FE-18R-1U !

Comm Tech IG232/2-ISA Fastcom Fully Isolated Dual Port RS232 Adapter

COMMEND 4-WIRE DESKTOP STATION EE411S.C REV AA

COMMSCOPE / ANDREW SOLUTIONS F4A-DMDM-15-P 15FT (4.572M) SUREFLEX ASSEMBLY

COMMSCOPE 1 * ATCB-B01-C50 & 3 * ATCB-B01-009 TELE-TILT CABLES !

COMMSCOPE 760180042 UNP-U-610-1U-24 CAT6 24 PORT PATCH PANEL

COMMSCOPE RFE-SLC-IS-EMT-BK 1U-PNL SHELF ASSY 1U INTERNAL SLIDING 760147439

COMMUNICATIONS INTEGRATORS 12AWG - 8AWG 120/208 VAC 3 PHASE 20A 50HZ OR 60HZ

COMMUNICATIONS TEST DESIGN WANSUITE 5130 IAD CSU ROUTER

Compact Air APSG052X18 Pneumatic Parallel Gripper

Compact Air GC234X2 Pneumatic Cylinder 2" Stroke

Compact Air Products SFH212X14 Pneumatic Cylinder, Bore: 2.5", Stroke: 1/4"

Compact Air Products SFH212X78 Cylinder, 1/8 NPT Ports, 7/8" Stroke, 2-1/2" Bore

Compact Air Products, R138X4 Pneumatic Cylinder, 38mm Bore, 4" Stroke

Compact Automation Products BFHD118X12 Air Cylinder, Bore: 1-1/8", Stroke: 1/2"

Compact BFHD118X12 Cylinder 0.5" Stroke

Compact CR3BFH118X3 Stainless Steel Heavy Duty Cylinder, 3" Stroke, 1-1/8" Bore

Compact SD118X78 Pneumatic Cylinder 1" Stroke

Compact SG112-1 Pneumatic Angular Gripper 5/32 Valve, 28mm Bore

Componex WINertia Aluminum Dead Shaft Idler Roller, 6x3, 14"L, Polished 32Ra

COMPULAB FITLET-XA10-LAN BAREBONE FITLET-GX-C67-FLAN-W

Compumotor M578311 Stepper Motor Drive *Bad Connector*

Compumotor PCA 71-006996-02 REV-K Board

Compumotor SM232AE-NTQN Servo Motor with Cabling NEMA 23 Winding A 1000ppr Enc

Computer Communication Cable DB37 Female to 4 DB9 Male

Computer Dynamics SAEUL12V REV-A VAMP Programming Switch 94V-0

Computer Dynamics SAEUL12V REV-A VAMP Programming Switch 94V-0, *Missing Button*

Computer Dynamics VAMP-XGA Rev G Touchscreen Monitor *For Parts*

Computerwise TLD2 Line Driver, Input Voltage: 95-125VAC, Output Voltage: 12VDC

Computerwise TT51-28M Display Terminal

COMTEST MTAS-192 SHELF MTAS-192 CLEI: VAMGH00ERA 00036173 48VDC 0.4A 14.4W

Comtrol 23955-01 Fan Out Cable

Comtrol 53002265 Rev C Rocketport uPCI Octa Card D-Sub 78-Pin

Comtrol A00077 Rev C 95850-5- 95891-8 Quad/Octa I/O PCI Card 5000820

Comtrol Rocketport Octa Cable, 78-Pin to 8x DB9 Connector Cable, 42" Long

Conair Heater TPNO1157 G 03 10 9KW.240/480V.3PH

Conbraco CompacTorque CTS30 Actuator, and Ball Valve, 1/2 NPT Size 30

Concoa 3042001-84-000 Regulator, 3000 PSI IN, 0-50 PSI Out, 1/4"NPT

Concoa 3044001-84-000 Regulator, 1/4"FPT Ports, 0-250psi Outlet Pressure

Concoa 3045001-84-000 Regulator, 1/4"FPT Ports, 0-500psi Outlet Pressure

Concoa 3123331-01-320 Regulator, 1/4" FPT Ports, 0-100psig Outlet Pressure

Concoa 412-13311C Gas Regulator, Brass, 0-4000psi and 30inHg to 30psi Gauges

ConCOA 4833001-01-000 483 Series Regulator, 3000 PSI In, 0-100 PSI Out

ConCOA 4833001-01-000 483 Series Regulator, 3000 PSI In, 0-100 PSI Out

Concoa 5263113-01-540 Switchover Set 0-15PSI 0-1 Bar Outlet Pressure

Concoa 806-5681 Gas Regulator for Hydrogen Methane 0-40PSI Outlet 4000PSI Inlet

Concoa PurityPlus 3043001-84-000 Regulator, 3000 PSI Max, 0-100 PSI, w/Gauge

Concoa PurityPlus 3044001-84-000 Regulator, Stainless, 3000 PSI Max, 0-250 PSI

Condor F48-6-A+ Power Supply, Input: 100/120/215/230-240VAC, Output: 48VDC at 6A

Condor GLC40A DC Power Supply 40W, 100-240V~1.3A 47-63Hz

Condor GLC65DG Power Supply 65W +5/+24/-12V

Condor GPFC125D DC Switching Power Supply 90-264VAC +5V, +24V, +12V, +12V, -12V

Condor GPFM115-24 DC Power Supply 100-240V ~ 2.3A 50/60Hz

Condor HA24-0.5-A+ Power Supply, In: 100/120/215/230-240VAC, Out: 24/28VDC 0.5A

Condor HA5-1.5/OVP-A+ Power Supply 100/120/230-240V-In 5V @ 1.5A