Copyright Goodheart-Willcox Co., Inc. 90 C H A P T E R 6 Aleksey Stemmer/Shutterstock.com PLC Programming Chapter Outline 6.1 Creating PLC Ladder Logic Diagrams from Relay Logic Diagrams 6.2 Programming Ladder Logic Diagrams with Normally Open and Normally Closed Switches 6.3 Programming Ladder Logic Diagrams with Normally Open and Normally Closed Contacts 6.4 PLC Program Scan Time 6.5 PLC Program and Data Files 6.6 Program P ing mi L L dd ad de r L Lo ic gi Diagrams with Latch and Unlatch Instructions 6.7 Loading and Troubleshooting PLC Ladder Diagrams in Run Mode 6.8 Using the PLC Force Instruction for Troubleshooting 6.9 Creating and Printing PLC Program Reports 6.10 Using Utility Instructions to Save and Retrieve PLC Programs 6.11 Using th he LogixPro S Si mul la tor to Create C Ladder dd Logic Diagrams Technical Terms bit (B3 and B10) channel one channel zero control co nt ro l (R6) (R 6) counter (C5) examine if closed (XIC) examine if open (XIO) immediate input with mask (IIM) immediate output with mask (IOM) input (I) instruction in st ru ct io n comments co mm en ts integer (N7) main program file fi offl mode fline online mode online monitor mode operational scan rate output (O) PLC project program pr og ra m scan sc an project tree area run mode rung comment status (S2) subroutine program file fi timer (T4)