依靠的工业网络技术可以迅速有效地收集、传送生产和管理数据。因此，网络在自动化系统集成工程中的重要性越来越显著，甚至有人提出"网络就是控制器"的观点说法。
PLC具有通信联网的功能，它使PLC与PLC 之间、PLC与上位计算机以及其他智能设备之间能够交换信息，形成一个统一的整体，实现分散集中控制。多数PLC具有RS-232接口，还有一些内置有支持各自通信协议的接口。
PLC的通信，还未实现互操作性，IEC规定了多种现场总线标准，PLC各厂家均有采用。
对于一个自动化工程(特别是中大规模控制系统)来讲，选择网络非常重要的。首先，网络必须是开放的，以方便不同设备的集成及未来系统规模的扩展；其次，针对不同网络层次的传输性能要求，选择网络的形式，这必须在较深入地了解该网络标准的协议、机制的前提下进行；再次综合考虑系统成本、设备兼容性、现场环境适用性等具体问题，确定不同层次所使用的网络标准。
福州卓凯电子科技有限公司联系人：林女士
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公司地址：福州市闽侯西江滨大道77号正荣润园一号楼1205室
主营：世界的PLC 、DCS 系统备件 模块
⒈Allen-Bradley(美国AB)系列产品》
GE Bus Plug FVK47ED4 70a 70 amp
Flex-A-Power Busway Plug Buss FVK
GE BTLF60C Pneumatic Timer 1-60sec 104710
GE BTLF60C Pneumatic Timer 1-60sec 104710
GE AQF3421MBX AXB7 A-Series II Board
Breaker Cover 125A 120V
GE AF-600 FP 6KFP43002X9XXXA1 fan &
pump drive 600FP
GE AF-600 FP 6KFP43002X9XXXA1 fan &
pump drive 600FP
GE 531X132APGACG1 Application Board
PC00007744
GE 463MD0CJD Lighting Contactor
Mechanically Held 30A
GCS Emtron LG1000 LVDT Transducer
GC Electronics 45-308 Computer Cable DB-9
Male to DB-9 Female Communications
GC Electronics 45-2108 AB selector Data
Transfer Switch
GBC Combo 101408 Hole Punch & Stapler
Binder Machine
GBC Combo 101408 Hole Punch & Stapler
Binder Machine
Gates, 900H200, Synchro Power Grip Timing
Belt 9257-3419
Gates, 8MGT-1280-36, Polychain GT Carbon
Belt
Gates, 8MGT-1280-36, Polychain GT Carbon
Belt
Gates, 8MGT-1280-36, Polychain GT Carbon
Belt
Gates, 7858-1706, Taper-Lock Bushing 1610 x
1-3/8"
Gates, 140XL037, PowerGrip Timing Belt
Gates Truflex 1260 Belt 3/8" x
26" 6726 3L260
Gates TL16H200 Powergrip Timing Pulley
7881-7029
Gates PowerGrip HTD 2000 8M 20008M timing
belt
Gates Powergrip GT2 Poly Chain 28-5MGT-15
20MM Bore Timing Pulling Sprocket
Gates Powergrip GT2 Poly Chain 28-5MGT-15
20MM Bore Timing Pulling Sprocket
Gates Powergrip 150L050 Timing Belt 080MC
Gates Poly Chain GT2 belt Polychain Timing
8MGT-2240-36 159v11 carbon
Gates Poly Chain GT Sprocket 8MX-36S-36 MPB
77153036
Gates Poly Chain GT Sprocket 8MX-36S-36 MPB
77153036
Gates Jason 90XL037 Gear Timing Tooth Belt
Gates 8MX-25S-21 MPB Polychain Timing
Pulley Drive GT2 Sprocket
Gates 7858-1702 Taper-Lock Bushing 1610 x
1-1/8"
Gates 7858-1702 Taper-Lock Bushing 1610 x
1-1/8"
Gates 78381100 QD Vulco Mount Bushing SH
1" bore
Gates 072053609271 PowerGrip HTD V-Belt
Timing 1593M06
GateKeeper DL21-SN Dummy Lever Satin Nickel
37-22380
Gast Mfg. AA-900F Muffler Assembly AA900F
Glass Jar 3/4"
Garryson Flap Wheel 10014
1-1/2"x1"x1/4" Grit 120 10/Box sanding sand er
Garlock, 63-0149, Oil Seal .750x1.750x.375
Garlock, 63-0149, Oil Seal .750x1.750x.375
Garlock, 3 X 3460, Mixer Shaft Seal Oil
3.500x4.376x.375
Gardner Denver Duro Flow 4504VT Roots
Sutorbilt Blower GGDAACAX
GAM KLC-250 Servo Motor Coupling Jakob
coupler 57130-140-2
Galco, GB71-415672-02, Motor 1/2HP .5hp
3600rpm 3PH TEFC
GAL Elevator INT5-0015N Power Contact Kit
Bridging Block SN Lock Interlock Lower
GAI Tronics, 13201010, Handle Handset Phone
Old Dial Rotary
G.A.S. GAS 308194 DP 50 D Gesellschaft
Antriebsund Steuerungstechnik
G.A.S. GAS 308194 DP 50 D Gesellschaft
Antriebsund Steuerungstechnik
Fustat SA20 Fuse Adapter pack of 4 Glass
Fusetron, FRS-R-17 1/2, Time-Delay Fuse
Class RK5 17-1/2A 17.5a 17.5 Amp
Fusetron, FRS-R-100, Bussman Class RK5 Fuse
600V Box of 5
Fusetron, FRS-R-100, Bussman Class RK5 Fuse
600V 100a 100 Amp
Fusetron, FRN 2 1/2, 2.5a 2 1/2 Amp
Dual-Element Time Delay Fuse 2.5Amp
Fusetron, FNQ 2 1/2, Time-Delay Fuse 2-1/2A
2.5a 2.5 Amp 2 1/2
Fusetron SOU Box cover unit fuseholder
glass fuse
Fusetron 429P Box Cover Unit for
2-1/4" Handy Box Fused Switch
Furnas, 45DG20AJX321, Contactor 2 Pole 24V
24vac 24 Volt Relay 2p Starter
Furnas Siemens 52SC6AE Oil Tight Key
Selector Operator Switch Keyed Key Lock
Furnas 52PA8A3 Push Button Operator Flush
Cap Green Siemens
Furnas 52PA4D2 Oil Tight Red Pilot Light
24V
Furnas 52PA4D2 Oil Tight Red Pilot Light
24V
Furnas 42CF35AJAGU Definite Purpose Controller
Contactor Relay Miller 160760
Furnas 42BF15AF Definite Purpose Controller
2Poles
Furnas 42BF15AF Definite Purpose Controller
2Poles
Furnas 14CSB32BA Magnetic Starter Nema 1
enlcosure 48ASB3M20 14CS ESP100 120v
FulFlo VJ-5R-5S-SY:1 Relief Valve FPT:
150-300
Fulflo VJ-3 Pressure Relief Valve Cast Iron
1/2" .5"
Fulflo VJ-3 Pressure Relief Valve Cast Iron
1/2" .5"
Fujisoku, HL108A, E110M11J AF LR105871-1
Rocker Switch On/Off
FujiDenshi Co FMA-10Q2 PC Board
Fuji, SZ-A22, Electric Starter Relay
Contactor Auxiliary Contact Block
Fuji, SH04AG, 4GH422, 24v 24vdc Electric
Contactor Relay
Fuji, SC13AA, 4NC0F0#10, 110-120vac 120v
Electric Contactor Relay
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