ALLEN BRADLEY 1747-L551 PLC Processor

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Identifying the Components of Your Processor 5–7 The figure below shows some of the hardware components of the SLC 5/03 processors (1747-L531 and 1747-L532). SLC 5/03 CPU RUN FLT BATT RUN FORCE DH485 RS232 REM PROG Battery (Battery Provides Back-up Power for the CMOS RAM) Memory Module Keyswitch DH485 Channel 1 DH485, DF1, or ASCII Channel 0 Operating System Memory Module Download Protection Jumper Left Side View Location of Serial and Catalog Numbers Front View Publication 1747-6.2
5–8 Identifying the Components of Your Processor The table below provides a general explanation of each processor status LED on the SLC 5/03 processor. ➀➁ Processor LED When It Is Indicates that On (steadily) The processor is in the Run mode. RUN (Color: green) FLT (Color: red) BATT (Color: red) FORCE (Color: amber) DH485 (Color: green) RS232 (Color: green) Flashing (during operation) Off Flashing (at power up) Flashing (during operation) On (steadily) Off On (steadily) Off Flashing On (steadily) Off On (steadily) Flashing Off On (flashing) DF1 Mode Off DF1 Mode On (steadily) DH485 Mode Flashing DH485 Mode Off DH485 Mode The processor is transferring a program from RAM to the memory module. The processor is in a mode other than Run. The processor has not been configured. The processor detects a major error either in the processor, expansion chassis or memory. A fatal error is present (no communications). There are no errors. The battery voltage has fallen below a threshold level, or the battery or the battery jumper is missing or not connected. The battery is functional, or the battery jumper is present. One or more input or output addresses have been forced to an On or Off state but the forces have not been enabled. The forces have been enabled. No forces are present or enabled. The Communications Active Bit (S:1/7) is set in the System Status file and processor is actively communicating on the network. There are no other active nodes on the network. A fatal error is present (no communications). The SLC 5/03 is transmitting on the network. The SLC 5/03 processor is not transmitting on the network. The Communications Active Bit (S:1/7) is set in the System Status file and the processor is actively communicating on the network. The processor is trying to establish communications, but there are no other active nodes on the network. A fatal error is present (no communications). ➀ If the LEDs on the SLC 5/03 turn on in a predefined sequence, the SLC 5/03 is in the process of downloading a new operating system. ➁ See chapter 10 for more information on LED status. Publication 1747-6.2
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Allen-Bradley SLC 500 Modular Hardw
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The information below summarizes th
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iv Table of Contents DH-485 Interfa
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vi Table of Contents Recommendation
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viii Table of Contents Connecting t
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x Table of Contents Calculating Hea
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P-2 Preface How to Use this Manual
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P-4 Preface Conventions Used in thi
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1-2 Quick Start for Experienced Use
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Page 25 and 26: 2-2 Selecting Your Hardware Compone
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Page 63 and 64: 3-12 System Installation Recommenda
Page 65 and 66: 4-2 Mounting Your SLC 500 Control S
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Page 79 and 80: 5-10 Identifying the Components of
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Page 97 and 98: 7-2 Wiring Your I/O Modules Contact
Page 99 and 100: 7-4 Wiring Your I/O Modules Prepari
Page 101 and 102: 7-6 Wiring Your I/O Modules Feature
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Page 105 and 106: 7-10 Wiring Your I/O Modules Using
Page 107 and 108: This chapter describes how to start
Page 109 and 110: Starting Up Your Control System 8-3
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Page 121 and 122: Maintaining Your Control System 9-3
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In this chapter, you will learn abo
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Troubleshooting 10-3 Replacing Fuse
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Troubleshooting 10-5 If the LEDs in
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Troubleshooting 10-7 If the LEDs in
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Troubleshooting 10-9 Identifying SL
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Troubleshooting 10-11 Troubleshooti
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Troubleshooting 10-13 If the LEDs i
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Troubleshooting 10-17 Identifying S
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Troubleshooting 10-19 If the RS232
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Troubleshooting 10-21 Identifying P
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Troubleshooting 10-25 Returning the
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11-2 Replacement Parts Catalog Numb
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The information in this appendix wi
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Setting Up the DH-485 Network A-3 O
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Setting Up the DH-485 Network A-5 E
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Setting Up the DH-485 Network A-7 I
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Setting Up the DH-485 Network A-9 T
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Setting Up the DH-485 Network A-11
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This appendix provides an overview
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RS-232 Communication Interface B-3
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This appendix provides an overview
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Setting Up the DH+ Network C-3 Wiri
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This appendix provides a brief intr
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Control Networks D-3 DeviceNet Netw
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- Use this Table to Calculate the
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Power Supply Worksheet E-3 Hardware
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This appendix will assist you in ca
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Calculating Heat Dissipation for th
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This appendix: • describes SLC 5/
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Communicating with Devices on an Et
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You can find the following terms us
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Glossary GL-3 Initiator — A node
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Glossary GL-5 Signal Delay — For
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I-2 Index hardware features, 5-2, 6
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I-4 Index DH-485 Communication Inte
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I-6 Index keyswitch positions for t
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I-8 Index Publication 1747-6.2 Q Qu
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I-10 Index T testing inputs, 8-5 ou
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ALLEN BRADLEY 1747-L551 PLC Processor

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