Logix5000 Controllers General Instructions - SLAC Confluence

632 ASCII Conversion Instructions (STOD, STOR, DTOS, RTOS, UPPER, LOWER)Condition Relay Ladder Action Structured Text ActionEnableIn is set na EnableIn is always set.The instruction executes.instruction execution The instruction converts the Source to upper case.postscan The rung-condition-out is set to false. No action taken.Example:To find information about a specific item, an operator enters thecatalog number of the item into an ASCII terminal. After the controllerreads the input from a terminal (terminal_read.EM is set), the UPPERinstruction converts the characters in catalog_number to all uppercase characters and stores the result in catalog_number_upper_case. Asubsequent rung then searches an array for characters that matchthose in catalog_number_upper_case.Relay LadderStructured TextIF terminal_read.EM THENUPPER(catalog_number,catalog_number_upper_case);terminal_read.EM := 0;END_IF;Publication 1756-RM003I-EN-P - January 2007