BUS_ RD功能塊從VME總線上讀取數(shù)據(jù)。這個(gè)功能應(yīng)該在程序中需要該數(shù)據(jù)之前執(zhí)行。如果要被讀取的數(shù)據(jù)總數(shù)在32767字節(jié)、字或雙字以上，則使用多指令來(lái)讀取該數(shù)據(jù)。當(dāng)BUS_ RD接收到能量流，它就訪問(wèn)在指定機(jī)架(R)、插槽(S)、子插槽(SS)、區(qū)域地址(RGN)和偏移量(OFF)上的VME模塊。BUS_ RD從輸出點(diǎn)Q開(kāi)始在模塊中復(fù)制的數(shù)據(jù):單位(雙字、字或字節(jié))指定數(shù)量

RITTAL 9969.894 NSPP 9969894

ALLEN BRADLEY 1336-B005-EAD-L?3 USPP 1336B005EADL3

ALLEN BRADLEY 1336-B005-EOD USPP 1336B005EOD

GETTYS DR1060-305 NSFP DR1060305

CONTROL TECHNIQUES DXE-450 USPP DXE450

NOVATEC MCS-132 USPP MCS132

ALLEN BRADLEY 1779-KFL USPP 1779KFL

ALLEN BRADLEY 809-A2 USPP 809A2

FOXBORO 230SM-G USPP 230SMG

ALLEN BRADLEY 809-A21E USPP 809A21E

ALLEN BRADLEY 1336-B005-EAD-F?A2 USPP 1336B005EADFA2

MITSUBISHI MR-SA152 USPP MRSA152

GE LIGHTING RINTER2424PSLM NSFP RINTER2424PSLM

LEEDS & NORTHRUP 074419 NSPP 074419

SIEMENS 32.1578.340-00 NSPP 32157834000

RELIANCE ELECTRIC 0-51419 NSFP 051419