1746-NO4I

1746-NO4I************1746-NO4I

1746-NO4I

【誠信】【合作】【共贏】【創(chuàng)新】【細(xì)心】【用心】
【技術(shù)參數(shù)】(執(zhí)行標(biāo)準(zhǔn)：Q//YYK888-2a888)。
【精度等級】：測量精度：0.6、0.3級;顯示位數(shù)：整四位LED(888)顯示、整五位LED(8888)、液晶LCD顯示。
【輸入】：電壓：AC300V、AC120V、AC4500、DC65mV等/電流：AC3A、2A、DC30mA等。
【過量程】：持續(xù)：2.5倍，瞬時：電流15倍/5秒，電壓3倍/10秒。
【頻率】：70±10%
【隔離耐壓】：電源與輸入變送輸出、通訊接口為AC3KV輸入、變送輸出、通訊接口兩間為AC1KV。
【絕緣電阻】：≧500MΩ。
【平均*工作時間】：≧80000h。

·協(xié)議（Protocol)：是對數(shù)據(jù)格式和計算機(jī)之間交換數(shù)據(jù)時必須遵守的規(guī)則的正式描述。簡單的說了，網(wǎng)絡(luò)中的計算機(jī)要能夠互相順利的通信，就必須講同樣的語言，語言就相當(dāng)于協(xié)議，它分為Ethernet、NetBEUI、IPX/SPX以及TCP/IP協(xié)議。
 
·拓?fù)浣Y(jié)構(gòu)：是指網(wǎng)絡(luò)中各個站點(diǎn)相互連接的形式，主要有總線型拓?fù)?、星型拓?fù)?、環(huán)型拓?fù)湟约八鼈兊幕旌闲汀?br> 
·FDDI/CDDI:由美國國家標(biāo)準(zhǔn)協(xié)會ANSI的X3T9.5制定。速率為100Mbps；CDDI是基于銅電纜（雙絞線）的FDDI。FDDI技術(shù)成熟，網(wǎng)絡(luò)可延伸100公里，且由于采用環(huán)形結(jié)構(gòu)和優(yōu)良的管理能力，具有高可靠性。價格貴，安裝復(fù)雜，標(biāo)準(zhǔn)完善，技術(shù)成熟，支持的軟硬件產(chǎn)品豐富。
 
·IEEE802.5/令牌環(huán)網(wǎng)：常用于IBM系統(tǒng)中，其支持的速率為4Mbps和16Mbps兩種。Novell、IBM LAN Server支持16MbpsIEEE802.5/令牌環(huán)網(wǎng)技術(shù)。
 
·交換以太網(wǎng):其支持的協(xié)議仍然是IEEE802.3/以太網(wǎng)，但提供多個單獨(dú)的10Mbps端口。它與原來的IEEE802.3/以太網(wǎng)*兼容，并且克服了共享10Mbps帶來的網(wǎng)絡(luò)效率下降。
 
·100BASE-T快速以太網(wǎng)：與10BASE-T的區(qū)別在于將網(wǎng)絡(luò)的速率提高了十倍，即100M。采用了FDDI的PMD協(xié)議，但價格比FDDI便宜。100BASE-T的標(biāo)準(zhǔn)由IEEE802.3制定。與10BASE-T采用相同的媒體訪問技術(shù)、類似的步線規(guī)則和相同的引出線，易于與10BASE-T集成。每個網(wǎng)段只允許兩個中繼器，zui大網(wǎng)絡(luò)跨度為210米。

   
Cluster I/O 200 Series I/O See Chart below for 200 Series part #s The 200 Series Field Bus Modules are the latest generation I/A Series I/O modules. The DIN rail mounted FBM subsystem provides a reliable, high speed communications interface between the host control processor (for example the I/A Series control station) and field I/O sensors and actuators. It incorporates innovative equipment packaging, and the use of fiber optic and/or coaxial cabling between modules to allow local or remote distribution of process I/O points. The DIN rail mounted Fieldbus Modules (FBMs) are compact, high-performance distributed process I/O modules. They perform the signal conversion required to interface the electrical input signals to/from the field sensors to the optionally-fault-tolerant I/A Series control station. Communication between the FBMs the I/A Series control station is via Fieldbus Communication Modules (FCMs), which interface the 2 Mbps module Fieldbus used by the FBMs with the 10 Mbps Ethernet trunk Fieldbus used by the I/A Series control station. The FBMs automatically accept communication from either communication path (A or B) of the redundant Ethernet trunk Fieldbus. Thus, if one path fails, communication is not interrupted. 
 100 Series I/O 
 
V4.3 The Ethernet MESH Network (V8.x) S20 The Mesh Network represents the next revolutionary step of the I/A Series Control Network functionality, Version 8.0 release introduces unprecedented communications capability, versatility and performance to I/A Series process automation systems. The Mesh network structure provides alternate communications paths between all stations that allows for faster, more reliable communications. Standard Commercial Off-The-Shelf (COTS) switch technology and components employ the Rapid Spanning Tree Protocol (RSTP) to manage traffic paths and provide a self-healing, redundant network that can recover from multiples faults. Based on open standards, the Ethernet Mesh Network also lowers deployment costs by moving away from expensive proprietary networks to a low-cost standard network that can be easily maintained. This network also provides an infrastructure for information sharing between manufacturing and back-office systems. 
 V6.X 
 V7.X