Allen-Bradley MicroLogixt 1000 Programmable User Controllers Manual (Bulletin 1761 Controllers) Important User Information Because of the variety of uses for the products described in this publication, those responsible for the application and use of this control equipment must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes, and standards. The illustrations, charts, sample programs and layout examples shown in this guide are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Allen-Bradley does not assume responsibility or liability (to include intellectual property liability) for actual use based on the examples shown in this publication. Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application, Installation, and Maintenance of Solid-State Control (available from your local Allen-Bradley office), describes some important differences between solid-state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication. Reproduction of the contents of this copyrighted publication, in whole or in part, without written permission of Allen-Bradley Company, Inc., is prohibited. Throughout this manual, we use notes to make you aware of safety considerations: Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss. Attention statements help you to: • identify a hazard • avoid the hazard • recognize the consequences Note Identifies information that is critical for successful application and understanding of the product. SLC 500, SLC 5/01, SLC 5/02, SLC 5/03, SLC 5/04, MicroLogix, DTAM, DTAM Micro, PanelView, RediPANEL, Dataliner, DH+, and Data Highway Plus are trademarks of Rockwell Automation. PLC-2, PLC-5 are registered trademarks of Rockwell Automation. A.I. Series and WINtelligent LINX are trademarks of Rockwell Software Inc. Table of Contents Table of Contents Preface . P–1 Who Should Use this Manual . P–2 Purpose of this Manual . P–2 Common Techniques Used in this Manual . P–6 Allen-Bradley Support. P–6 Hardware 1 Installing Your Controller. 1–1 Compliance to European Union Directives. 1–2 Hardware Overview. 1–3 Master Control Relay . 1–4 Using Surge Suppressors . 1–8 Safety Considerations . 1–11 Power Considerations . 1–12 Preventing Excessive Heat . 1–13 Controller Spacing. 1–14 Mounting the Controller. 1–14 2 Wiring Your Controller. 2–1 Grounding Guidelines . 2–2 Sinking and Sourcing Circuits. 2–3 Wiring Recommendations . 2–4 Wiring Diagrams, Discrete Input and Output Voltage Ranges . 2–7 Analog Cable Recommendation . 2–21 Minimizing Electrical Noise on Analog Controllers . 2–21 Wiring Your Analog Channels . 2–22 Analog Voltage and Current Input and Output Ranges. 2–23 Wiring Your Controller for High–Speed Counter Applications. 2–24 3 Connecting the System. 3–1 Connecting the DF1 Protocol. 3–2 Connecting to a DH-485 Network. 3–5 Connecting the AIC+ . 3–9 toc–i MicroLogixPreface 1000 Programmable Controllers User Manual Establishing Communication. 3–17 DeviceNet Communications . 3–18 Programming 4 Programming Overview. 4–1 Principles of Machine Control. 4–2 Understanding File Organization. 4–4 Understanding How Processor Files are Stored and Accessed . 4–6 Addressing Data Files . 4–10 Applying Ladder Logics to Your Schematics. 4–14 Developing Your Logic Program – A Model. 4–15 5 Using Analog. 5–1 I/O Image. 5–2 I/O Configuration. 5–3 Input Filter and Update Times. 5–3 Converting Analog Data. 5–5 6 Using Basic Instructions. 6–1 About the Basic Instructions . 6–2 Bit Instructions Overview. 6–3 Examine if Closed (XIC). 6–4 Examine if Open (XIO). 6–4 Output Energize (OTE). 6–5 Output Latch (OTL) and Output Unlatch (OTU). 6–5 One-Shot Rising (OSR). 6–7 Timer Instructions Overview. 6–8 Timer On-Delay (TON). 6–11 Timer Off-Delay (TOF). 6–12 Retentive Timer (RTO). 6–14 Counter Instructions Overview. 6–15 Count Up (CTU). 6–18 Count Down (CTD). 6–19 Reset (RES). 6–20 Basic Instructions in the Paper Drilling Machine Application Example. 6–21 7 Using Comparison Instructions. 7–1 About the Comparison Instructions. 7–2 Comparison Instructions Overview. 7–2 toc–ii Table of Contents Equal (EQU). 7–3 Not Equal (NEQ). ..