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

Recipe and Data Logging 5254. After entering all the information for the data log queue, click onOK. The queue is added to the Data Log Que window with acorresponding queue number. This is the queue number to use inthe DLG instruction.DLG - Data LogInstructionDLGData Logqueue number 0Instruction Type: outputExecution Time for the DLG InstructionControllerWhen Rung Is:TrueFalseMicroLogix 1400 8.9910 µs 2.6050 µsIMPORTANTYou must configure a data log queue before programming a DLG instructioninto your ladder program.The DLG instruction triggers the saving of a record. The DLG instructionhas one operand:Queue Number - Specifies which data log queue captures a record.The DLG instruction only captures data on a false-to-true rung transition.The DLG rung must be reset (scanned false) before it will capture dataagain. Never place the DLG instruction alone on a rung. It should alwayshave preceding logic, as shown below:Publication 1766-RM001A-EN-P - October 2008