Logix5000 Controllers General Instructions - SLAC Confluence

238 Compare Instructions (CMP, EQU, GEQ, GRT, LEQ, LES, LIM, MEQ, NEQ)Mask Equal to (MEQ)The MEQ instruction passes the Source and Compare values through aMask and compares the results.Operands:Relay LadderOperand Type Format DescriptionSource SINT immediate value to test against CompareINTtagMaskDINTA SINT or INT tag converts to a DINT value by zero-fill.SINT immediate defines which bits to block or passINTtagCompareDINTA SINT or INT tag converts to a DINT value by zero-fill.SINT immediate value to test against SourceINTtagStructured TextStructured text does not have an MEQ instruction, but you canachieve the same results using structured text.IF (Source AND Mask) = (Compare AND Mask) THENEND_IF;DINT;Function BlockA SINT or INT tag converts to a DINT value by zero-fill.Operand Type Format DescriptionMEQ tag FBD_MASK_EQUAL structure MEQ structurePublication 1756-RM003I-EN-P - January 2007