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PROFIBUS 连接器的针脚定义及终端电阻的连接
订货号
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

问题: PROFIBUS 连接器6ES7972-0BA12-0XA0的针脚定◥义及终端电阻是怎样连接的?
解答: 9针D形连接╳器针脚定义如下表

D形连接器的插座与总线站相联接,而它的插头与总线电缆相联接。
根据EIA RS 485标准,在数据线A和B的两端均加接总线终端器。PROFIBUS的总线终端器包▽含一个下拉电阻和一个上拉电阻。当在总线上没∑有站发送数据时,也就△是说在两个报文之间总线处于空闲状态时,这●两个电阻确保在总线上有一个确定的空闲々电位。必须为终端电阻供电以使其作用。