ALLEN BRADLEY 74100-013-51
ALLEN BRADLEY 74100-013-51
使用譯碼指令SDEC舉例
寫語句表、分析程序功能
譯碼數(shù)字位3→0
需占用一個結(jié)果通道
設(shè)源通道HR00中內(nèi)容為1673(BCD)
源通道中第3位數(shù)字是1→對應(yīng) b、c 段應(yīng)該是1;
*個譯碼結(jié)果要存放在結(jié)果通道的低8位,所以HR01的低8位是0000 0110(bit7固定為0);
源通道中第0位數(shù)字是3→對應(yīng) a、 b、 c、d、g段是1;
第二個譯碼結(jié)果要存放在結(jié)果通道的高8位,所以HR01的高8位是0100 1111(bit15固定為0)。
源通道數(shù)字與譯碼結(jié)果通道的對應(yīng)關(guān)系如下頁圖。
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