ALLEN BRADLEY 1747-L551 PLC Processor

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B–6 RS-232 Communication Interface Either half-duplex or full-duplex modem types can be used for the master, but half-duplex modems must be used for the slaves (assuming there is more than one on a multi-drop network). WINtelligent Linx or RSLinx Running DF1 Half-Duplex Protocol (MASTER) RS-232 (DF1 Protocol) Modem Modem Modem Modem Modem SLC 5/02 Processor Modular Controller with 1747-KE Interface Module (SLAVE) SLC 5/03 Processor Modular Controller (SLAVE) SLC 5/01 Processor Modular Controller with 1747-KE Interface Module (SLAVE) SLC 500 Fixed I/O Controller with 1747-KE Interface Module (SLAVE) SLC 5/03 Processor Modular Controller (MASTER) RS-232 (DF1 Protocol) Modem Modem Modem Modem Modem SLC 5/02 Processor Modular Controller with 1747-KE Interface Module (SLAVE) SLC 5/03 Processor Modular Controller (SLAVE) SLC 5/01 Processor Modular Controller with 1747-KE Interface Module (SLAVE) SLC 500 Fixed I/O Controller with 1747-KE Interface Module (SLAVE) Publication 1747-6.2
RS-232 Communication Interface B–7 ASCII Communication ASCII protocol allows you to connect the SLC 5/03, SLC 5/04, and SLC 5/05 processors to serial printers, PCs, and other third party devices. ASCII protocol allows your ladder program to manage ASCII data. SLC 5/03 Processor Modular Controller 1747-CP3 RS-232 Channel 0 DF1 Communication Protocol Modems Overview You can connect the SLC 5/03, SLC 5/04, and SLC 5/05 processors to several different types of modems. In all cases, the processors act as Data Terminal Equipment (DTE). DTE send and/or receive data on a network. Modem or line drivers act as Data Communication Equipment (DCE), which provide the signal conversion and coding required for communication between DTE and data circuits. Other DCE include phone-line modems and specialized modems, such as radio and satellite-link modems. In addition to Common Return (COM), Receive Data (RXD), and Transmit Data (TXD), the following active modem-control lines are provided on the SLC 5/03, SLC 5/04, and SLC 5/05 processors: RTS (Request to Send) — this output signal indicates to the modem or other DCE that the DTE wants to transmit. CTS (Clear to Send) — this input signal from the modem indicates the modem is ready to receive the transmission by the DTE for forwarding over a link. DSR (Data Set Ready) — this input signal indicates the DCE device is ready for operation. Loss of this signal causes a “modem-lost” condition in the processor. DTR (Data Terminal Ready) — this output signal from the DTE indicates that it is ready for operation. You can also use this signal with the processor to initiate DTR dialing in dial-up modems that support such a feature. DCD (Data Carrier Detect) — this is an input signal from the DCE that indicates a carrier signal is being received and that presumably data is to be received for forwarding to the DTE connected. 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
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 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 179: RS-232 Communication Interface B-5
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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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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