PM860K01處理器模塊,3BSE018100R1參數(shù)說(shuō)明
支持10BASE～T和100BASE-TX以太網(wǎng)外設(shè)，對(duì)其他標(biāo)準(zhǔn)以太網(wǎng)解決方案有良好的兼容性和通用性PCB布局方面，精度為1％的電阻和100 nF的去耦電容應(yīng)靠近PHY器件放置，并通過(guò)最短的路徑到電源。兩對(duì)差分信號(hào)(TD和RD)應(yīng)平行走線，避免短截，且盡量保證長(zhǎng)度匹配，這樣可以避免共模噪聲和EMI輻射。理想情況下，信號(hào)線上不應(yīng)有交叉或者通孔，同時(shí)，差分線應(yīng)盡可能走在一面。本模塊設(shè)計(jì)結(jié)構(gòu)，
PM860K01處理器模塊從功能上可以設(shè)計(jì)成兩種工作模式：Modbus TCP從站模式，Modbus TCP主站模式。Modbus TCP從站模式，是把以太網(wǎng)總線Modbus TCP請(qǐng)求轉(zhuǎn)化成串口總線Modbus RTU請(qǐng)求，也就是以太網(wǎng)設(shè)備從PLC讀出數(shù)據(jù)；Modbus TCP主站模式，是把串口總線Modbus RTU請(qǐng)求轉(zhuǎn)化成以太網(wǎng)Modbus TCP請(qǐng)求，也就是PLC從以太網(wǎng)設(shè)備讀入數(shù)據(jù)。下面以Modbus TCP從站模式為例。撥碼功能配置表模塊配置主要是通過(guò)8位撥碼開(kāi)關(guān)實(shí)現(xiàn)，通過(guò)這撥碼開(kāi)關(guān)配置模塊的工作模式，以太網(wǎng)IP地址，串口RTU地址，波特率。驅(qū)動(dòng)開(kāi)發(fā)包括兩部份：芯片物理層驅(qū)動(dòng)(MAC，PHY)和TCP/IP協(xié)議層驅(qū)動(dòng)。芯片物理層驅(qū)動(dòng)主要是對(duì)LPC1758的以太網(wǎng)控制器和PHY芯片的初始化和控制輸入輸出的函數(shù)化打包，以便供TCP/IP協(xié)議層驅(qū)動(dòng)調(diào)用。TCP/IP協(xié)議層驅(qū)動(dòng)開(kāi)發(fā)需要參考TCP/IP標(biāo)準(zhǔn)協(xié)議Modbus TCP與西門(mén)子PLC數(shù)據(jù)地址對(duì)應(yīng)關(guān)系
BCNet-S7PPI、BCNet-S7MPI內(nèi)部集成ModbusTCP服務(wù)器，支持ModbusTCP通訊的客戶機(jī)軟件可以直接讀寫(xiě)PLC的數(shù)據(jù)。實(shí)現(xiàn)功能號(hào)包括：FC1、FC2、FC3、FC4、FC5、FC6和FC16。
PLC的站地址為Modbus從站地址。
PLC的數(shù)據(jù)區(qū)和Modbus數(shù)據(jù)區(qū)在BCNet-S7PPI/MPI內(nèi)部被自動(dòng)映射，PLC內(nèi)不需要編寫(xiě)通訊程序：
1． PLC的Q區(qū)對(duì)應(yīng)Modbus的線圈，Q0.0對(duì)應(yīng)00001。
2． PLC的I區(qū)對(duì)應(yīng)Modbus的離散輸入，I0.0對(duì)應(yīng)10001。
3． PLC的M區(qū)對(duì)應(yīng)Modbus的輸入寄存器，MW0對(duì)應(yīng)30001。
4． PLC的V區(qū)(DB區(qū))對(duì)應(yīng)Modbus的乘法寄存器，VW0對(duì)應(yīng)40001?，F(xiàn)場(chǎng)安裝了K4-2*73NO28F型離心式通風(fēng)機(jī)兩臺(tái)，配套電機(jī)YR1250-10/1430異步電動(dòng)機(jī)，功率1250KW,定子電壓6KV,電流145A,轉(zhuǎn)子電壓801V,電流935A,采用轉(zhuǎn)子回路串接頻敏變阻器降壓?jiǎn)?dòng)方式。電控系統(tǒng)采用繼電器、接觸器組成的模擬控制系統(tǒng)，就地按鈕控制，致使風(fēng)機(jī)各輔助設(shè)備包括潤(rùn)滑站、立風(fēng)門(mén)、平風(fēng)門(mén)、反風(fēng)門(mén)、冷卻水泵等的控制設(shè)備布置分散，未實(shí)現(xiàn)集中控制。
Strengthen the staff operation specification of device and plate welding tooling;
5. The "module coaxial inspection pin" is used to inspect the coaxiality of the shell and the device, which replaces the jumper to inspect the module, reducing the effect on the module and reducing the pollution and damage to the device core. There are many things worth learning about industrial switches. Here we mainly introduce how to avoid packet loss in energy data control of Gigabit industrial switches. Flow control can not improve the data throughput of the whole industrial switch, but it can avoid packet loss in the industrial switch.
The Gigabit Ethernet physical layer protocol IEEE defines several Gigabit Ethernet interfaces for different physical media, including 1000base CX, 1000base SX, 1000base LX and 1000base-t.
Among them, 1000base CX is the interface used for 155 Ω balanced coaxial cable. In practice, there is no real product. 1000BASE-T is the interface that can be used for class 5 or higher twisted pair, and its standard is IEEE802 3 AB, this standard was just released in June 1999, and now commercial products have just been launched in the market.
1000base SX
