ALLEN BRADLEY 1747-L551 PLC Processor

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A–12 Setting Up the DH-485 Network Connecting the Communication Cable to the Isolated Link Coupler Attach the terminal block of the link coupler to the Belden #3106A or #9842 cable as shown below. Additional terminal blocks are available for replacement, see chapter 11. Single Cable Connection Orange with White Stripes Belden #3106A or #9842 Shrink Tubing Recommended White with Orange Stripes Blue (#3106A) or Blue with White Stripes (9842) Drain Wire 6Termination 5 A 4 B 3Common 2Shield 1Chassis Ground Multiple Cable Connection to Previous Device to Successive Device 19525 The table below shows wire/terminal connections for DH-485 connectors for Belden #3106A. For this Wire/Pair Connect this Wire To this Terminal Shield/Drain Non-jacketed Terminal 2 – Shield Blue Blue Terminal 3 – (Common) Wit White/Orange White with Orange Stripe Terminal 4 – (Data B) Orange with White Stripe Terminal 5 – (Data A) Publication 1747-6.2
Setting Up the DH-485 Network A–13 The table below shows wire/terminal connections for DH-485 connectors for Belden #9842. For this Wire/Pair Connect this Wire To this Terminal Shield/Drain Non-jacketed Terminal 2 – Shield Blue/White White with Blue Stripe Blue with White Stripe Cut back – no connection ➀ Terminal 3 – (Common) Wit White/Orange White with Orange Stripe Terminal 4 – (Data B) Orange with White Stripe Terminal 5 – (Data A) ➀ To prevent confusion when installing the communication cable, cut back the white with blue stripe wire immediately after the the insulation jacket is removed. This wire is not used by DH-485. Important: In Series A 1747-AIC, terminal 5 was called DATA B and terminal 4 was called DATA A. In this case, use terminal numbers only and ignore signal names DATA B and DATA A. The internal circuitry of the Series A is the same as Series B. Grounding and Terminating the DH-485 Network Only one of the link couplers at the end of the link must have Terminals 1 and 2 of the network connector jumpered together. This provides an earth ground connection for the shield of the communication cable. Link couplers at both ends of the network must have Terminals 5 and 6 of the link connectors jumpered together. This connects the termination impedance (of 120Ω) that is built into each link coupler as required by the DH-485 specification. See the figure below for the proper jumpering. End-of-Line Termination Jumper Jumper 6 5 4 3 2 1 Jumper Belden #9842 Cable 1219 m (4000 ft) Maximum 6 5 4 3 2 1 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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2-2 Selecting Your Hardware Compone
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2-10 Selecting Your Hardware Compon
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3-2 System Installation Recommendat
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3-10 System Installation Recommenda
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3-12 System Installation Recommenda
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4-2 Mounting Your SLC 500 Control S
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5-2 Identifying the Components of Y
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5-10 Identifying the Components of
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6-2 Installing Your Hardware Compon
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6-10 Installing Your Hardware Compo
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7-2 Wiring Your I/O Modules Contact
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7-4 Wiring Your I/O Modules Prepari
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7-6 Wiring Your I/O Modules Feature
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7-8 Wiring Your I/O Modules Octal L
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7-10 Wiring Your I/O Modules Using
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This chapter describes how to start
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Starting Up Your Control System 8-3
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Page 119 and 120: This chapter covers the following m
Page 121 and 122: Maintaining Your Control System 9-3
Page 127 and 128: In this chapter, you will learn abo
Page 129 and 130: Troubleshooting 10-3 Replacing Fuse
Page 131 and 132: Troubleshooting 10-5 If the LEDs in
Page 133 and 134: Troubleshooting 10-7 If the LEDs in
Page 135 and 136: Troubleshooting 10-9 Identifying SL
Page 137 and 138: Troubleshooting 10-11 Troubleshooti
Page 139 and 140: Troubleshooting 10-13 If the LEDs i
Page 143 and 144: Troubleshooting 10-17 Identifying S
Page 145 and 146: Troubleshooting 10-19 If the RS232
Page 147 and 148: Troubleshooting 10-21 Identifying P
Page 151 and 152: Troubleshooting 10-25 Returning the
Page 157 and 158: 11-2 Replacement Parts Catalog Numb
Page 159 and 160: The information in this appendix wi
Page 161 and 162: Setting Up the DH-485 Network A-3 O
Page 163 and 164: Setting Up the DH-485 Network A-5 E
Page 165 and 166: Setting Up the DH-485 Network A-7 I
Page 167 and 168: Setting Up the DH-485 Network A-9 T
Page 169: Setting Up the DH-485 Network A-11
Page 173 and 174: Setting Up the DH-485 Network A-15
Page 175 and 176: This appendix provides an overview
Page 177 and 178: RS-232 Communication Interface B-3
Page 195 and 196: This appendix provides an overview
Page 197 and 198: Setting Up the DH+ Network C-3 Wiri
Page 199 and 200: This appendix provides a brief intr
Page 201 and 202: Control Networks D-3 DeviceNet Netw
Page 203 and 204: - Use this Table to Calculate the
Page 205 and 206: Power Supply Worksheet E-3 Hardware
Page 207 and 208: This appendix will assist you in ca
Page 209 and 210: Calculating Heat Dissipation for th
Page 215 and 216: This appendix: • describes SLC 5/
Page 217 and 218: Communicating with Devices on an Et
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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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