1766-RM001A-EN-P MicroLogix 1400 Programmable Controllers ...

Index 681ESC 540JOG 539OK 540POT0 539POT1 539SCD 536Sub-Elements 535, 536TIF 538TO 537WND 540LCD Instruction 542Addressing Modes and File Types 542Default Values 543Displaying Special Characters 544Getting Value with Keypad 543Use 542LCD Overview 533least significant bit (LSB) 671LED (light emitting diode) 671LEQ instruction 192LES instruction 191less than instruction 191less than or equal to instruction 192LFL instruction 282LFU instruction 284LIFO (Last-In-First-Out) 671LIFO load instruction 282LIFO unload instruction 284LIM instruction 194limit instruction 194LN Insrtuction 227load memory module always bit 557load memory module on error or default program bit 556local messages 413LOG Insrtuction 229logic 671logical instructions 255logical NOT instruction 260logical OR instruction 258low byte 671Mmajor error code status 565major error detected in user fault routine status bit 563major error halted status bit 558manuals, related 14mask compare for equal instruction 193masked move instruction 264master control relay (MCR) 671master control reset instruction 300math instructions 197, 237math overflow selection bit 561math register status 567maximum scan time status 568MCR instruction 300memory 40clearing controller memory 51memory mappingMicroLogix 1200 I/O 18memory module boot status bit 564memory module compare bit 560memory module information function file 60fault override 61functionality type 60load always 62load on error 62mode behavior 62module present 61program compare 61write protect 61memory module password mismatch status bit 564memory usagechecking controller memory usage 44MicroLogix 1500 instructions 545MEQ 193MEQ instruction 193messageQuick Start example 638message (MG) file 399message errors 466message instruction 398message reply pending status bit 569messageslocal 413local messaging examples 423remote 439messagingremote station-to-remote station 596messaging overview 393MicroLogix 1400 scan time example 550minor error bits 563MMI function file 60mnemonic 671Modbus definition 672Modbus RTU protocol 611Modbus to MicroLogix memory map 617, 618, 619, 621mode behavior 558mode status 554Publication 1766-RM001A-EN-P - October 2008