1、產(chǎn)品概述
YC-DPM-DNT可將ProfibusDP總線網(wǎng)絡(luò)上的從站設(shè)備接入到DeviceNet網(wǎng)絡(luò)。網(wǎng)關(guān)在ProfibusDP總線側(cè)作為主站使用,在DeviceNet側(cè)作為從站使用。YC-DPM-DNT網(wǎng)關(guān)在ProfibusDP側(cè)只支持與一個(gè)ProfibusDP從站的通信,并且只支持單主站系統(tǒng),不能和其它主站通信。
YC-DPM-DNT的應(yīng)用模式
1.1、產(chǎn)品特點(diǎn)
◆ 使用32-Bit Micro-controller,頻率可達(dá)80MHz;
◆ 支持與Profibus DP-V0 從站通信;
◆ Profibus傳輸速率可達(dá)3M bps,CAN傳輸速率可達(dá)1Mbps ;
◆ Profibus和CAN信號(hào)具備2500Vrms 高速磁耦合隔離保護(hù)電路;
◆ Profibus、CAN、電源三端電氣隔離,并且三個(gè)端口具備抗600W雷電、浪涌能力;
◆ 電源輸入范圍寬,并具備反接、過(guò)壓、過(guò)流、過(guò)熱保護(hù)功能;
◆ 具備LED 狀態(tài)指示燈,方便用戶查看狀態(tài);
◆ 內(nèi)置獨(dú)立看門狗,增強(qiáng)設(shè)備抗干擾能力;
◆ 提供導(dǎo)軌(DIN Rail)安裝方式。
1.2、技術(shù)指標(biāo)
1.2.1、DeviceNet
◆ 作為 DeviceNet 從站,支持標(biāo)準(zhǔn)的 DeviceNet 通訊協(xié)議;
◆ 在預(yù)定義的主/從連接組中支持顯性連接,支持輪詢的 I/O 連接方式;
◆ IO 輪詢連接,顯性連接,Group 2 only servers 連接;
◆ 支持EDS描述文件;
◆ 支持波特率: 125K、250K、500Kbps。
1.2.2、Profibus DP接口
◆ 最大輸入輸出字節(jié)數(shù):輸入244字節(jié),輸出244字節(jié);
◆ 最大用戶參數(shù)長(zhǎng)度:244字節(jié);
◆ 傳輸速率支持9.6K、19.2K、45.45K、93.75K、187.5K、500K、1.5M、3Mbps;
◆ Profibus主站地址軟件可設(shè)置。
1.2.3、電源接口
◆ 物理接口為3P端子;
◆ 輸入電壓范圍7~36V;
◆ 具備反接、過(guò)壓、過(guò)流、過(guò)熱保護(hù)功能;
◆ 功率消耗1W。
1.2.4、環(huán)境指標(biāo)
◆ 工作溫度-20~70度;
◆ 工作濕度5%~95%(25℃時(shí)),無(wú)凝結(jié)。
1.2.5、外形尺寸:112X70X40mm
1.2.6、安裝方式:35mm DIN導(dǎo)軌
1.2.7、重量:約120g
2、硬件描述
YC-DPM-DNT接口
2.1、接口說(shuō)明
2.2、LED狀態(tài)指示燈
3、網(wǎng)關(guān)工作原理
在Profibus組態(tài)工具中完成對(duì)用戶從站設(shè)備的組態(tài),生成配置文件。通過(guò)我公司的YC-DPM-DNT網(wǎng)關(guān)配置軟件,將配置文件下載到網(wǎng)關(guān)(網(wǎng)關(guān)的配置文件掉電不丟失)。主站網(wǎng)關(guān)完成配置后,以后每次上電都會(huì)根據(jù)配置參數(shù)自主進(jìn)行與從站的通信。當(dāng)網(wǎng)關(guān)與從站連接成功并進(jìn)行數(shù)據(jù)交換時(shí),網(wǎng)關(guān)面板上的PB燈會(huì)被點(diǎn)亮;當(dāng)與從站的連接失敗或通信中斷后,PB燈就會(huì)閃爍。
當(dāng)YC-DPM-DNT網(wǎng)關(guān)與Profibus從站連接成功后,就會(huì)與Profibus從站進(jìn)行數(shù)據(jù)交換,這時(shí)可通過(guò)YC-DPM-DNT網(wǎng)關(guān)的CAN接口與其通信,從而實(shí)現(xiàn)對(duì)Profibus從站的讀寫訪問(wèn)。YC-DPM-DNT網(wǎng)關(guān)內(nèi)有兩個(gè)244字節(jié)的緩沖區(qū),在DeviceNet從站側(cè)映射為兩個(gè)DeviceNet 通信對(duì)象,可通過(guò)顯示連接和IO連接進(jìn)行訪問(wèn);在Profibus主站側(cè)映射為Profibus從站的輸入和輸出緩沖區(qū)。這兩個(gè)244字節(jié)的緩沖區(qū)在上電后即可被DeviceNet主站訪問(wèn)(初始值為0x00),但只有在Profibus側(cè)通信成功后才能訪問(wèn)到Profibus從站的有效數(shù)據(jù)。當(dāng)Profibus通信過(guò)程中出現(xiàn)掉線故障時(shí),緩存會(huì)被自動(dòng)清零。
YC-DPM-DNT網(wǎng)關(guān)會(huì)和Profibus從站進(jìn)行周期性數(shù)據(jù)交換,網(wǎng)關(guān)輸出緩沖區(qū)的數(shù)據(jù)周期性寫入到Profibus從站設(shè)備,同時(shí)周期性讀取Profibus從站設(shè)備數(shù)據(jù)并更新網(wǎng)關(guān)的輸入緩沖區(qū)。
審核編輯 黃宇
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