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6ES7972-0BA12-0XA0

西门子DP总线连接器，用于PROFIBUS，高达12 MBIT/S，90度出线电缆（W X H X D）：15，8 X 54 X 34 MM，端接电阻，带隔离

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电位。必须为终端电阻供电以使其作用。