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1785-L40B现货

b.模块式PLC
输入/输出点数较多的大、中型和部分小型PLC采用模块式结构。
模块式PLC采用积木搭接的方式组成系统，便于扩展，其CPU、输入、
输出、电源等都是独立的模块，有的PLC的电源包含在CPU模块之中。
PLC由框架和各模块组成，各模块插在相应插槽上，通过总线连接。
PLC厂家备有不同槽数的框架供用户选用。用户可以选用不同档次的
CPU模块、品种繁多的I/O模块和其他特殊模块，硬件配置灵活，维修
时更换模块也很方便。采用这种结构形式的有SIEMENS的S5系列、
S7-300、400系列，OMRON的C500、C1000H及C2000H等以及小型CQM系列。
图3所示为三菱MELSEC-Q系列PLC的外形图。

c.叠装式PLC
上述两种结构各有特色，整体式PLC结构紧凑、安装方便、体积小，易于
与被控设备组成一体，但有时系统所配置的输入输出点不能被充分利用，
且不同PLC的尺寸大小不一致，不易安装整齐；模块式PLC点数配置灵活，
但是尺寸较大，很难与小型设备连成一体。为此开发了叠装式PLC，它吸
收了整体式和模块式PLC的优点，其基本单元、扩展单元等高等宽，它们
不用基板，仅用扁平电缆连接，紧密拼装后组成一个整齐的体积小巧的长
方体，而且输入、输出点数的配置也相当灵活。带扩展功能的PLC，扩展
后的结构即为叠装式PLC，如图4所示的三菱公司FX2N系列PLC外形图。
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★厦门岳航计算机工程有限公司
★联系人：黄先森 ★ Q Q ：1497534640 ★
★电话：0592-5165553 ★ 手机：15359409553 ★
★传真：0592-5165561（注黄先森收） ★
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★网址：www.yuehang.cc ★
★地址；厦门思明区湖滨东路湖光大厦18楼B单元★
━━━━━━━━━━━━━━━━━━━━━━━━━

4X264 Fork Terminal, Bare, 16 to 14 AWG, PK100 M14-6FB...

NIB 6F043 ABC-5 PK5 COOPER BUSSMANN Fuse, ABC, 5A, 250V...

NIB 3LB34 PK25 3M Ring Terminal, Red, Brazed, 22-18 AWG...

NIB 2MEK6 A DAYTON Run Capacitor, 60/5 MFD, 440 VAC, Ro...

2UKL1 NIB Battery, Lead Acid, 4V, 4.5AH

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NIB 4XH32 COOPER BUSSMANN Fuse, Class T, 400 A

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2MEK3 B NIB DAYTON Run Capacitor, 50/7.5 MFD, 440 VAC, ...

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2635 ASHCROFT Low Pressure Gauge, 2 1/2 In, 15 In H2O ...

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3LV27 Strap, One Hole, EMT 1 1/2 In, Pk20 39121701

5XC37 NIB Bushing, Conduit, Plastic, 2 In BOX OF 25

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3LL77 THOMAS & BETTS Compression Lug, 3/0 AWG, L 2.35 I...

NIB 4XC40 COOPER BUSSMANN Midget Fuse, Fast Acting, KTK...

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NIB 8501KF12V14 SQUARE D Relay, 8 Pin, DPDT, 12A

NIB 3KG07 STA-KON Female Flag Disconnect, Red, 22-18AWG

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公司名称：岳航计算机工程(厦门)有限公司
联系人：黄玉玺
联系电话：0592-5165553
手机号：15359409553
传真：0592-5165561
电子信箱：182289657@qq.com
公司网站：http://www.yuehang.cc/index.aspx
公司地址：厦门市思明区湖滨东路湖光大厦18楼B单元

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