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PROFIBUS 連接器的針腳定義及終端電阻的連接
信息來源： 發(fā)布時間：2012-07-13 10:50:32 點(diǎn)擊次數(shù)：0
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(jù)EIA RS 485標(biāo)準(zhǔn),在數(shù)據(jù)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(dāng)在總線上沒有站發(fā)送數(shù)據(jù)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。原理如下圖:
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6AG1500-0EA02-2AA0
6AG1500-0EA02-4AA0
6AG1972-0AB01-4XA0
6AG1972-0BA12-2XA0
6AG1972-0BB12-2XA0
6AG1972-0DA00-2AA0
6ES7181-0AA00-0AA0
6ES7181-0AA01-0AA0
6ES7193-8LA00-0AA0
6ES7193-8LB00-0AA0
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6ES7972-0BA40-0XA0
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6ES7972-0BA50-0XA0
6ES7972-0BA51-0XA0
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6ES7972-0BA52-0XB0
6ES7972-0BA60-0XA0
6ES7972-0BB00-0XA0
6ES7972-0BB10-0XA0
6ES7972-0BB11-0XA0
6ES7972-0BB12-0XA0
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6ES7972-0BB51-0XA0
6ES7972-0BB52-0XA0
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6GK1500-0AB00
6GK1500-0BA00
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6GK1500-0CA00
6GK1500-0CB00
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根據(jù)EIA RS 485標(biāo)準(zhǔn),在數(shù)據(jù)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(dāng)在總線上沒有站發(fā)送數(shù)據(jù)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。原理如下圖:
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6ES7972-0BA42-0XA0
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6XV1861-7CN50
6XV1861-7CN75
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6XV1861-7DN50
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6XV1874-2A
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