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FXN-4DA模擬量輸出模塊緩沖存儲器BFM的內(nèi)容是什么?

發(fā)布日期:2022-10-09 點擊率:61


     FX2N-4DA模擬量輸出模塊由32個BFM緩沖器組成,每個緩沖儲存器

BFM為16位,其分配見表6-8。




 


    表中有“W”的緩沖寄存器中的數(shù)據(jù)可由PLC通過TO指令寫入,標有“E”的

緩沖寄存器中的數(shù)據(jù)可以寫入EEPROM,當電源關閉時可以保持緩沖寄存器中

的數(shù)據(jù)。

    若BFM#O的設定值用H口口口口表示,則BFM#O的最低位口控制CHI,

然后依次為CH2、CH3和CH4。“口”中對應的設定如下:

    口=l,通道模擬量輸出為- 10~-r-iov直流電壓;

    口一2,通道模擬量輸出為—-4~+20mA直流電流;

    口=3,通道模擬量輸出為0~20mA直流電流。

    BMF#5:數(shù)據(jù)保持模式。當PI_C處于停止(STOP)模式時,RUN模式下

的最后輸m值將被保持。若BMF#5的設定值用H口口口口表示,則BMF#5

的最低位為CHI,然后依次為CH2、CH3和CH4。“口”中對應的設定如下:

    口=1,相應通道的轉換數(shù)據(jù)在PIC停止運行時,仍然保持不變;口一2,
相應通道的轉換數(shù)據(jù)復位,稱為偏移設置值。

BFM#29錯誤狀態(tài)信息見表6-9。




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