Logix5000 Controllers General Instructions - SLAC Confluence

Chapter 10Array (File)/Shift Instructions(BSL, BSR, FFL, FFU, LFL, LFU)IntroductionUse the array (file)/shift instructions to modify the location of datawithin arrays.If You Want To Use This Instruction Available In These Languages See PageLoad bits into, shift bits through, and unloadBSL relay ladder 388bits from a bit array one bit at a time.BSR relay ladder 392Load and unload values in the same order. FFL relay ladder 396FFU relay ladder 402Load and unload values in reverse order. LFL relay ladder 408LFU relay ladder 414You can mix data types, but loss of accuracy and rounding errorsmight occur.For relay ladder instructions, bold data types indicate optimal datatypes. An instruction executes faster and requires less memory if allthe operands of the instruction use the same optimal data type,typically DINT or REAL.387 Publication 1756-RM003I-EN-P - January 2007