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

Knowledgebase Quick Starts 647Notes on using Interrupt bitsIf the Auto Start bit (AS) is set, this will start the interrupt on power upand set the Timed Interrupt Enabled bit (TIE) automatically, allowing theinterrupt to execute. Shown in the above example.If the AS bit is not set then the TIE bit must be set through the ladder logicin order for the interrupt to execute.The User Interrupt Enable bit (UIE) determines if the interrupt executes ornot.# 18465 “Quick Start”RTC SynchronizationBetween ControllersThe following example illustrates a message write from an SLC 5/03 orhigher processor to a Micrologix 1400 processor with RTC that has beenenabled.This example can also be applied for messaging between MicroLogix1100, 1200, 1400, and 1500 controllers. When messaging from aMicroLogix 1100/1200/1400/1500 controller to MicroLogix 1100/1200/1400/1500 controller it is recommended that RTC:0 be used as the sourceinstead of (S:37 - S:42).Minimum Hardware/Software requirements• All MicroLogix 1400• MicroLogix 1200 Series B FRN 2• MicroLogix 1500 Series B FRN 4• RSLogix 500/RSLogix Micro v8.10.00• All MicroLogix 1100ExampleThe example shows network connections using DH-485, however DF1Full or Half Duplex Ethernet/IP will also work.Publication 1766-RM001A-EN-P - October 2008