Logix5000 Controllers General Instructions - SLAC Confluence

292 Move/Logical Instructions (MOV, MVM, BTD, MVMT, BTDT, CLR, SWPB, AND, OR, XOR, NOT, BAND, BOR, BXOR, BNOT)Example:1. Copy Target into Dest.Target 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1Dest 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 12. Mask Source and compare it to Dest. Any required changes aremade in Dest. Source and Target remain unchanged. A 0 in themask restrains the instruction from comparing that bit (shown byx in the example).Source 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1Mask1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0Dest 0 1 0 1 1 1 1 1 0 1 0 1 1 1 1 1 0 1 0 1 1 1 1 1 0 1 0 1 1 1 1 1Structured TextThe shaded boxes show the bits that changed.MVMT_01.Source := value_1;MVMT_01.Mask := mask1;MVMT_01.Target := target;MVMT(MVMT_01);value_masked := MVMT_01.Dest;Function BlockPublication 1756-RM003I-EN-P - January 2007