先進先出(FIFO)讀功能模塊(FIFO_ RD)從表中移出數據。數值總是從表的底部移出。如果指針指向最后位值，表就滿了。FIFO_RD必須用來刪除指針入口存儲單元的記錄并且指針減1。IFO_ RD和FIFO_ _WRT結合使用，FIFO_ WRT使指針增1并且把指針存儲單元的內容寫入表中。1.FIFO_ RD復制表的頂部存儲單元的值到輸出參數Q中。

 

POWERTEC POWER SUPPLIES 1000-6A USPP 10006A

GENERAL ELECTRIC 531X300CCHAEM2 NSPP 531X300CCHAEM2

BANNER ENGINEERING MSXLHDE7212Y NSPP MSXLHDE7212Y

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FANUC A16B-0160-0650 USPP A16B01600650

ALLEN BRADLEY 7300-UCES3 USPP 7300UCES3

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MATTEC 561-1022 USPP 5611022

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SQUARE D CP2308G4STM NSPP CP2308G4STM

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SENSORIK 4031 NSPP 4031

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HONEYWELL 30752766-001 NSPP 30752766001

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ASPECT 68040U NSPP 68040U