詳細內容：武漢康廈自動化是華中區(qū)西門子授權分銷商，主營德國西門子PLC，電源，觸摸屏，變頻器，電纜，通訊卡。大量庫存，歡迎來電咨詢 ------------------------------------------------武漢康廈楊琴（027）88779746、18971510091、QQ：572661999----------------------------------------------------------------------------------- 6ES7972-0BA12-0XA0 西門子DP總線連接器，用于PROFIBUS，高達12 MBIT/S，90度出線電纜（W X H X D）：15，8 X 54 X 34 MM，端接電阻，帶隔離 PROFIBUS 連接器的針腳定義及終端電阻的連接 訂貨號 6ES7181-0AA00-0AA0 SIMATIC DP, BT200 TEST UNIT 6ES7181-0AA01-0AA0 SIMATIC DP, BT200 BUS TEST UNIT 6ES7193-8LA00-0AA0 CHARGER 230V F. BUSTESTER BT 200 6ES7193-8LB00-0AA0 CHARGER 110V F. BUSTESTER BT 200 6ES7193-8MA00-0AA0 PROTOKOL KIT F. BUSTESTER BT 200 6ES7901-4BD00-0XA0 CONNECTION CABLE F. PROFIBUS 6ES7972-0AA00-0XA0 SIMATIC S7, RS485 REPEATER FOR 6ES7972-0AA01-0XA0 REPEATER RS485 F. PROFIBUS/MPI 6ES7972-0AA02-0XA0 REPEATER RS485 F. PROFIBUS/MPI 6ES7972-0AB00-0XA0 SIMATIC S7, DIAGNOSIS-REPEATER 6ES7972-0AB00-8AA0 Handbuch Diagnose-Repeater, Deutsch 6ES7972-0AB00-8BA0 Handbuch Diagnose-Repeater, Englisch 6ES7972-0AB00-8CA0 Handbuch Diagnose-Repeater, Franz?sisch 6ES7972-0AB01-0XA0 SIMATIC S7, DIAGNOSIS-REPEATER 6ES7972-0BA00-0XA0 SINEC-L2 Bus connector without PG socket 6ES7972-0BA10-0XA0 SINEC-L2 Bus connector without PG socket 6ES7972-0BA11-0XA0 SINEC-L2 Bus connector without PG socket 6ES7972-0BA12-0XA0 PB CONNECTOR, 90 DEGREE, W/O PG SOCKET 6ES7972-0BA20-0XA0 SINEC-L2 Bus connector without PG socket 6ES7972-0BA30-0XA0 BUS CONNECTOR F. PROFIBUS, TILTED 6ES7972-0BA40-0XA0 SINEC-L2 Bus connector without PG socket 6ES7972-0BA41-0XA0 SIMATIC DP,BUS CONNECTOR FOR 6ES7972-0BA42-0XA0 BUS CONNECTOR F. PROFIBUS, W/O PG SOCKET 6ES7972-0BA50-0XA0 PB CONNECTOR, 90 DEGREE, W/O PG SOCKET 6ES7972-0BA51-0XA0 PB CONNECTOR, 90 DEGREE, W/O PG SOCKET 6ES7972-0BA52-0XA0 PB CONNECTOR, 90 DEGREE, W/O PG SOCKET 6ES7972-0BA52-0XB0 PB CONNECTOR, 90 DEGREE, W/O PG SOCKET 6ES7972-0BA60-0XA0 SIMATIC DP,BUS CONNECTOR FOR 6ES7972-0BB00-0XA0 SINEC-L2 Bus connector with PG socket 6ES7972-0BB10-0XA0 SINEC-L2 Bus connector with PG socket 6ES7972-0BB11-0XA0 SINEC-L2 Bus connector with PG socket 6ES7972-0BB12-0XA0 SIMATIC DP, BUS CONNECTOR FOR 6ES7972-0BB20-0XA0 SINEC-L2 Bus connector with PG socket 6ES7972-0BB40-0XA0 SINEC-L2 Bus connector with PG socket 6ES7972-0BB41-0XA0 BUS CONNECTOR FOR PROFIBUS, TILTED 6ES7972-0BB42-0XA0 BUS CONNECTOR F. PROFIBUS, WIT PG SOCKET 6ES7972-0BB50-0XA0 PB CONNECTOR, 90 DEGREE, WITH PG SOCKET 6ES7972-0BB51-0XA0 PB CONNECTOR, 90 DEGREE, WITH PG SOCKET 6ES7972-0BB52-0XA0 PB CONNECTOR, 90 DEGREE, WITH PG SOCKET 6ES7972-0BB52-0XB0 PB CONNECTOR, 90 DEGREE, WITH PG SOCKET 6ES7972-0BB60-0XA0 SIMATIC DP, BUS CONNECTOR FOR 6ES7972-0DA00-0AA0 SIMATIC S7, RS485 RESISTOR 問題: PROFIBUS 連接器6ES7972-0BA12-0XA0的針腳定義及終端電阻是怎樣連接的? 解答: 9針D形連接器針腳定義如下表 D形連接器的插座與總線站相聯(lián)接,而它的插頭與總線電纜相聯(lián)接。 根據EIA RS 485標準,在數據線A和B的兩端均加接總線終端器。PROFIBUS的總線終端器包含一個下拉電阻和一個上拉電阻。當在總線上沒有站發(fā)送數據時,也就是說在兩個報文之間總線處于空閑狀態(tài)時,這兩個電阻確保在總線上有一個確定的空閑電位。必須為終端電阻供電以使其作用。