產(chǎn)品細節(jié)介紹
XVC767AE102控制板
電氣接口
硬件或電氣接口是以下之一：
?后端子連接器的三個2線RS485端口之一，
?前面板連接器的RS232
?光纖連接。
在雙線RS485鏈路中，數(shù)據(jù)流是雙向的。RS485和RS232端口的數(shù)據(jù)流都是半雙工的。那就是，數(shù)據(jù)從不同時發(fā)送和接收。RS485線應(yīng)以菊花鏈配置連接（避免星形連接）在鏈路的每一端安裝終端網(wǎng)絡(luò)，即在主端和從端離主人最遠。終端網(wǎng)絡(luò)應(yīng)包括120? 與1 nF陶瓷電容器串聯(lián)的電阻器與Belden 9841 RS485導(dǎo)線一起使用時。端接電阻器的值應(yīng)等于特性線路阻抗。這大約是120? 用于標(biāo)準(zhǔn)#22 AWG雙絞線。屏蔽線應(yīng)始終用于最小化噪音。極性在RS485通信中很重要。必須連接每個369的每個“+”端子
使系統(tǒng)運行。有關(guān)正確的詳細信息，請參閱第3-13頁第3.3.14節(jié)：RS485通信串行端口接線。
當(dāng)使用光纖鏈路時，來自369的Tx應(yīng)連接到主設(shè)備的Rx和來自369應(yīng)連接到主設(shè)備的Tx。
10.1.2 PROFIBUS通信
369電機管理繼電器支持Profibus DP協(xié)議作為從設(shè)備，可以從ProfibusDP主設(shè)備讀取和寫入，該主設(shè)備可以讀取369_xxxx格式的DMD文件。gs*文件。
繼電器支持以下配置和指示：
?現(xiàn)場總線類型：PROFIBUS-DP EN 50170（DIN 19245）第3部分。
?支持的擴展功能：通過郵箱報文的診斷數(shù)據(jù)。
?自動波特率檢測9.6Kbit-12Mbit。
?地址范圍：1-126，通過369PC程序或前鍵盤設(shè)置。
?輸入數(shù)據(jù)：220字節(jié)-周期性。
?診斷數(shù)據(jù)：26字節(jié)-非周期性。
有關(guān)完整詳細信息，請參閱第10-2頁第10.2節(jié)：PROFIBUS協(xié)議。
10.1.3 MODBUS通信
369執(zhí)行AEG Modicon Modbus RTU串行通信標(biāo)準(zhǔn)的子集。許多流行的可編程控制器通過合適的接口卡直接支持該協(xié)議，允許繼電器的直接連接。
雖然Modbus協(xié)議獨立于硬件，369接口包括三個2線RS485端口和一個RS232端口。
Modbus是一種單主、多從協(xié)議，適用于RS485硬件提供的多點配置。
在這種配置中，單個通信信道上最多可以將32個從屬設(shè)備串接在一起。
369總是一個奴隸。它不能作為主程序進行編程。計算機或PLC通常被編程為主機。Modbus協(xié)議有兩個版本：遠程終端單元（RTU，二進制）和ASCII。只有RTU版本是369支持。使用讀寫寄存器命令可以實現(xiàn)監(jiān)控、編程和控制功能。有關(guān)完整詳細信息，請參閱第10-8頁第10.3節(jié)：MODBUS RTU協(xié)議。
ELECTRICAL INTERFACE
The hardware or electrical interface is one of the following: ? one of three 2-wire RS485 ports from the rear terminal connector, ? the RS232 from the front panel connector ? a fibre optic connection. In a 2-wire RS485 link, data flow is bidirectional. Data flow is half duplex for both the RS485 and the RS232 ports. That is, data is never transmitted and received at the same time. RS485 lines should be connected in a daisy chain configuration (avoid star connections) with a terminating network installed at each end of the link, i.e. at the master end and at the slave farthest from the master. The terminating network should consist of a 120 ? resistor in series with a 1 nF ceramic capacitor when used with Belden 9841 RS485 wire. The value of the terminating resistors should be equal to the characteristic impedance of the line. This is approximately 120 ? for standard #22 AWG twisted pair wire. Shielded wire should always be used to minimize noise. Polarity is important in RS485 communications. Each '+' terminal of every 369 must be connected together for the system to operate. See Section 3.3.14: RS485 COMMUNICATIONS on page 3–13 for details on correct serial port wiring. When using a fibre optic link the Tx from the 369 should be connected to the Rx of the Master device and the Rx from the 369 should be connected to the Tx of the Master device. 10.1.2 PROFIBUS COMMUNICATIONS The 369 Motor Management Relay supports Profibus-DP protocol as slave that can be read and written to, from a ProfibusDP master which can read DMD file in the form of 369_xxxx.gs* files.
The relay supports the following
configurations and indications: ? Fieldbus type: PROFIBUS-DP EN 50170 (DIN 19245) Part 3. ? Extended functions supported: Diagnostics Data via mailbox telegram. ? Auto baud rate detection 9.6Kbit - 12Mbit. ? Address range: 1-126, setting via 369PC Program or front keypad. ? Input data: 220 bytes - cyclical. ? Diagnostic data: 26 bytes - non-cyclical. See Section 10.2: PROFIBUS PROTOCOL on page 10–2 for complete details. 10.1.3 MODBUS COMMUNICATIONS The 369 implements a subset of the AEG Modicon Modbus RTU serial communication standard. Many popular programmable controllers support this protocol directly with a suitable interface card allowing direct connection of relays. Although the Modbus protocol is hardware independent, the 369 interfaces include three 2-wire RS485 ports and one RS232 port. Modbus is a single master, multiple slave protocol suitable for a multi-drop configuration as provided by RS485 hardware. In this configuration up to 32 slaves can be daisy-chained together on a single communication channel. The 369 is always a slave. It cannot be programmed as a master. Computers or PLCs are commonly programmed as masters. The Modbus protocol exists in two versions: Remote Terminal Unit (RTU, binary) and ASCII. Only the RTU version is supported by the 369. Monitoring, programming and control functions are possible using read and write register commands. See Section 10.3: MODBUS RTU PROTOCOL on page 10–8 for complete details.
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