產(chǎn)品詳細資料
RS485/RS422通信745為用戶提供了兩個可以同時使用的后部通信端口。兩者都實現(xiàn)了《GEK-106636A:745通信指南》中概述的AEG Modicon Modbus協(xié)議的子集。COM1端口可用于二線制RS485模式或四線制RS422模式，但不會同時在兩種模式下工作。在RS485模式下，數(shù)據(jù)傳輸和接收通過一對雙絞線完成，傳輸和接收數(shù)據(jù)在相同的兩根導線上交替。這些電線應連接到標有RS485的端子上。RS422模式使用指定為RS485的COM1端子用于接收線路，使用指定為RS422的COM1終端用于發(fā)送線路。COM2端口僅用于雙線RS485模式。通過使用這些端口，可以從遠程計算機、SCADA系統(tǒng)或PLC進行連續(xù)監(jiān)測和控制。為了大限度地減少噪聲帶來的誤差，建議使用屏蔽雙絞線。還應遵守正確的極性。例如，繼電器必須與所有B1端子（標記為COM1 RS485+）連接在一起，所有B2端子（標記COM1 RS485–）連接在一同。端子B3（標記為COM1 RS485 COM）應連接到屏蔽內(nèi)部的公共電線。為了避免回路電流，屏蔽應僅在一點接地。
RS485/RS422 Communications The 745 provides the user with two rear communication ports which may be used simultaneously. Both implement a subset of the AEG Modicon Modbus protocol as outlined in publication GEK-106636A: 745 Communications Guide. The COM1 port can be used in the two-wire RS485 mode or the four-wire RS422 mode, but will not operate in both modes at the same time. In RS485 mode, data transmission and reception are accomplished over a single twisted pair with transmit and receive data alternating over the same two wires. These wires should be connected to the terminals marked RS485. The RS422 mode uses the COM1 terminals designated as RS485 for receive lines, and the COM1 terminals designated as RS422 for transmit lines. The COM2 port is intended for the two wire RS485 mode only. Through the use of these ports, continuous monitoring and control from a remote computer, SCADA system or PLC is possible. To minimize errors from noise, the use of shielded twisted-pair wire is recommended. Correct polarity should also be observed. For instance, the relays must be connected with all B1 terminals (labeled COM1 RS485+) connected together, and all B2 terminals (labeled COM1 RS485–) connected together. Terminal B3 (labeled COM1 RS485 COM) should be connected to the common wire inside the shield. To avoid loop currents, the shield should be grounded at one point only.
主營產(chǎn)品簡介
專注于DCS、PLC、機器人控制系統(tǒng)、大型伺服四大系統(tǒng)領(lǐng)域。

主營產(chǎn)品各種模塊/卡件，控制器，觸摸屏，伺服驅(qū)動器。

優(yōu)勢：供應進口原裝正品，專業(yè)停產(chǎn)配件，

發(fā)貨快，貨期精準，

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只賣庫存產(chǎn)品;出完需訂貨!價格以客服說明為準!!訂貨貨期以客服說明為準，有任何疑問請聯(lián)繁客服! Limited stock, Contact US!

●使用前:

在操作和維護，安裝設(shè)備之前，請閱讀并嚴格遵守安全相關(guān)的信息。

Read and strictly follow safety-related information before operatingmaintainingand installing equipment.

●使用者要求:

必須從事安裝，組裝或維護設(shè)備等相關(guān)工控電氣機械以及其他相關(guān)技術(shù)的人員。

Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.應用范圍:

應用于品牌本系列工業(yè)以及生產(chǎn)生活自動化設(shè)備產(chǎn)品。

Used in the brand of this series of industriaand production automation eauipment products

適用于場景:系統(tǒng)集成，非標定制，產(chǎn)線升級改造，原設(shè)備電氣替換等等。

Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.

●操作人員:

應該由本品牌專業(yè)培訓操作員來安裝、操作和維修設(shè)備。專業(yè)人員具有技術(shù)能力強，熟悉安全信息和安全實施:

熟悉設(shè)備的安裝加工、操作和維護:熟悉處理所有的潛在危險情況。

Equipment should be installed,operated and maintained by trained operators from the brand

●危險情況

警告

.請注意使用人員的人身安全。

●除了產(chǎn)品特性以及功能，還需了解產(chǎn)品的使用壽命環(huán)境。

●充分學習產(chǎn)品使用手冊，否則非專業(yè)人員可能會造成人身危險。

Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.

●服務行業(yè)

適用水泥，木業(yè)，石業(yè)，橡膠，石油，化工，發(fā)電，環(huán)保，水處理，制冷，交通，鋼鐵，食品，飲料，船舶，制冷等行業(yè)

Applicable to cementwood,stone,rubber,petroleumchemical, power generation