ALLEN BRADLEY 1747-L551 PLC Processor

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B–20 RS-232 Communication Interface Applications for the RS-232 Communication Interface The figures below show you different applications for the RS-232 communication interface. DF1 Full-Duplex Peer-to-Peer Modem Modem SLC 5/03 Processor Modular Controller SLC 5/03 Processor Modular Controller Half-Duplex with Slave-to-Slave Routing Important: The 1747-KE module does not support slave-to-slave transfers. WINtelligent Linx or RSLinx Running DF1 Half-Duplex Protocol (Master) RS-232 (DF1 Protocol) Modem Leased Line Modem Modem SLC 5/03 Processor Modular Controller SLC 5/03 Processor Modular Controller Publication 1747-6.2
This appendix provides an overview of the Data Highway Plus (DH+) communication protocol and explains how the SLC 5/04 processors support it. This appendix also provides information on the following: • DH+ communication protocol overview • SLC 5/04 processor and DH+ communication • wiring connectors for DH+ communication for SLC 5/04 • typical DH+ network configuration Data Highway Plus Communication Protocol Overview Data Highway Plus implements peer-to-peer communication with a token-passing scheme to rotate link mastership among a maximum of 64 nodes. Since this method does not require polling, it helps provide time-efficient reliable data transport. The DH+ features: • remote programming of PLC-2, PLC-3, PLC-5 and SLC 500 processors on your network • direct connections to PLC-5 processors and industrial programming terminals • easy re-configuration and expansion if you want to add more nodes later • a communication rate of 57.6K baud, 115.2K baud, or 230.4K baud Important: A programming device, such as an IBM compatible PC, using a 1784-KT Communication Interface module does not operate faster than 57.6K baud. The 1784-KTXD can operate at all three communication rates. The following table summaries the type of termination resistor needed to stop communicating at the specified baud rate with the maximum cable length. Termination Link Resistor Value Ω Communication Rate (Kbaud) Maximum Cable Length m (ft) 150 57.6 3,048 (10,000) 150 115 1,542 (5,000) 82 230.4 762 (2,500) 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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This chapter covers the following m
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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 10-15 If the LEDs i
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Page 145 and 146: Troubleshooting 10-19 If the RS232
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Page 149 and 150: Troubleshooting 10-23 If the LEDs i
Page 151 and 152: Troubleshooting 10-25 Returning the
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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 and 170: Setting Up the DH-485 Network A-11
Page 175 and 176: This appendix provides an overview
Page 177 and 178: RS-232 Communication Interface B-3
Page 193: RS-232 Communication Interface B-19
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
Page 229 and 230: You can find the following terms us
Page 231 and 232: Glossary GL-3 Initiator — A node
Page 233 and 234: Glossary GL-5 Signal Delay — For
Page 235 and 236: I-2 Index hardware features, 5-2, 6
Page 237 and 238: I-4 Index DH-485 Communication Inte
Page 239 and 240: I-6 Index keyswitch positions for t
Page 241 and 242: I-8 Index Publication 1747-6.2 Q Qu
Page 243 and 244: I-10 Index T testing inputs, 8-5 ou
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ALLEN BRADLEY 1747-L551 PLC Processor

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