1783-US16T交换机1783-US16T模块参详
1783-US16T交换机1783-US16T模块参详
1783-US16T交换机1783-US16T模块参详
6AV2125-2JB03-0AX0
PM511V16 3BSE011181R1
LAM 853-017340-001-E
DCP161
SH100/40060/0/0/00/00/00/10/00
SH100/40060/0/0/00/00/00/11/00
C200/10/1/1/1/00
SH100/40080/0/0/00/00/00/11/00
SH140/30200/0/0/00/00/00/11/00
SH140/30270/0/1/00/00/00/10/00
MC-4/11/22/400
C600/10/1/1/1/00(13130262)
DSAO130
SH100/60020/0/0/00/00/00/11/00
iSH100/30044/0/0/00/0/00/00/00
iSH100/30044/0/0/00/0/00/10/00
6SL3320-1TE32-1AA3
6SL3225-0BE31-1AA1
6SL3225-0BE31-8AA0
1783-US16T
DCS402.0350
3HAC029157-001
PHARPSPEP21013
6AV7260-0DB20-0BX6 1
3BSM904483-2 1
-WONDERWARE OICB-15S-2CMXU OICB15S2CMXU
WESTINGHOUSE MORA2MAE MORA2MAE
WESTINGHOUSE 798A243G01 798A243G01
WESTINGHOUSE 292B335A10 292B335A10
VERIS E30A042 E30A042
TELEMECANIQUE TSX-P87410 TSXP87410
TELEMECANIQUE TSX-P871 TSXP871
TAYLOR ELECTRONICS 6014BZ10000D 6014BZ10000D
STROMBERG SAFUI80F500 SAFUI80F500
STI F3S-A482N-04 F3SA482N04
SQUARE D 225T3H 225T3H
SIEMENS TPS3C12400X0 TPS3C12400X0
SIEMENS 6SE9-532-6EL40 6SE95326EL40
SIEMENS 6SE9-531-4DK40 6SE95314DK40
SIEMENS 6SE9531-0DK40 6SE95310DK40
SIEMENS 6SE9-521-0CC40 6SE95210CC40
SIEMENS 6SE9-221-3DC40 6SE92213DC40
SIEMENS 6SE3-121-7DG40 6SE31217DG40
SIEMENS 6SC9-132-0BA0 6SC91320BA0
SIEMENS 6SC9-112-3BA05 6SC91123BA05
SIEMENS 6SC9111-2GA05 6SC91112GA05
SIEMENS 6SC9-111-2AJ55 6SC91112AJ55
SIEMENS 6SC9-111-2AF2 6SC91112AF2
SIEMENS 6SC9-111-2AF0 6SC91112AF0
SIEMENS 6SC9111-2AD0 6SC91112AD01
SIEMENS 6SC9-111-2AC25 6SC91112AC25
SIEMENS 6RA7-083-2FS22-0 6RA70832FS220
SIEMENS 6ES7-671-0RC02-0YX0CH 6ES76710RC020YX0
SIEMENS 6ES7-671-0CC01-0YX0 6ES76710CC010YX1
SIEMENS 6ES7-671-0CC00-0YX0 6ES76710CC000YX0
SIEMENS 6ES5-948-3UA13 6ES59483UA13
SIEMENS 6ES5-945-7UA13 6ES59457UA13
SIEMENS 6ES5-923-3UC11 6ES59233UC11
SIEMENS 6ES5-188-3UA12 6ES51883UA12
SIEMENS 6DS1-106-8BA 6DS11068BA
SIEMENS 6AV3627-1QK00-2AX0 6AV36271QK002AX0
SIEMENS 1PH6-161-4NF00-Z 1PH61614NF00Z
SEW EURODRIVE MDX60A0220-503-4-00 MDX60A0220503400
SCHWEITZER ENGINEERING 0351S61362552X1 0351S61362552X1
SAGINAW MACHINE CO 000W544870 000W544870
ROBERTSHAW DMS-3502 DMS3502
ROBERTSHAW DMS-3501 DMS3501
RELIANCE ELECTRIC 86466-76R 8646676R
RELIANCE ELECTRIC 86466-75R 8646675R
RELIANCE ELECTRIC 802220-14VC 80222014VC
RELIANCE ELECTRIC 801429-SE 801429SE
RELIANCE ELECTRIC 57552-C 57552C
RELIANCE ELECTRIC 3RA2003 3RA2003
RELIANCE ELECTRIC 0-57552-C 057552C
PERCEPTRON 9110021 9110021
PACIFIC SCIENTIFIC SC-752A001-01 SC752A00101
PACIFIC SCIENTIFIC SC155-001-05 SC15500105
OKUMA BL-D-30-A BLD30A
NUM 1020M 1020M
NOVAR CONTROLS CORP 750019110 750019110
NORTEL NETWORKS NT8D37BA-07 NT8D37BA07
NACHI SC35F-01 SC35F01
MODICON MM-PMC1-200 MMPMC1200
MODICON AS-C384-000 ASC384000
MODICON AS-B883-201 ASB883201
MODICON AS-506P-F32 AS506PF32
MODICON AS-384B-000 AS384B000
MITSUBISHI K419C K419C
MITSUBISHI FR-A740-00860-TF FRA74000860TF
MITSUBISHI AD5-1H-S3 AD51HS3
METASYS NU-NCM201-701 NUNCM201701
MEASUREX 51403422-150 51403422150
MEASUREX 51402615-800 51402615800
MEASUREX 51401635-150 51401635150
MEASUREX 053251-00 05325100
MARCONI PC-28-155MM2 PC28155MM2
MAGNETEK GPD515C-B224 GPD515CB224
LORAIN PRODUCTS 486531001 486531001
LORAIN PRODUCTS 486531000 486531000
KEYENCE CORP LS-5041 LS5041
KEYENCE CORP LC-D1A LCD1A
随着计算机及其互联技术(也即通常所谓的“网络技术”)的迅速发展,以太网成为了迄今为止普及率·高的短距离二层计算机网络。而以太网的核心部件就是以太网交换机。 [3]
不论是人工交换还是程控交换,都是为了传输语音信号,是需要独占线路的“电路交换”。而以太网是一种计算机网络,需要传输的是数据,因此采用的是“分组交换”。但无论采取哪种交换方式,交换机为两点间提供“独享通路”的特性不会改变。就以太网设备而言,交换机和集线器的本质区别就在于:当A发信息给B时,如果通过集线器,则接入集线器的所有网络节点都会收到这条信息(也就是以广播形式发送),只是网卡在硬件层面就会过滤掉不是发给本机的信息;而如果通过交换机,除非A通知交换机广播,否则发给B的信息C绝不会收到(获取交换机控制权限从而监听的情况除外)。
以太网交换机厂商根据市场需求,推出了三层甚至四层交换机。但无论如何,其核心功能仍是二层的以太网数据包交换,只是带有了·定的处理IP层甚至更高层数据包的能力。网络交换机是一个扩大网络的器材,能为子网络中提供更多的连接端口,以便连接更多的计算机。随着通信业的发展以及国民经济信息化的推进,网络交换机市场呈稳步上升态势。它具有性能价格比高、高度灵活、相对简单、易于实现等特点。