SCADA System Selection Guide Flexible Solutions for Your Supervisory Control and Data Acquisition Needs
Important User Information Read this document and the documents listed in the additional resources section about installation, configuration, and operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.
Summary of Changes This manual contains new and updated information. Changes throughout this revision are marked by change bars, as shown to the right of this paragraph. New and Updated Information This table contains the changes made to this revision. Topic Page Updated the device selection table.
Summary of Changes Notes: 4 To download or view a .doc file version of this procurement specification, please visit: www.rockwellautomation.com/industries/procurement-specifications.
Table of Contents Summary of Changes Table of Contents Preface New and Updated Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 How to Use This Document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Chapter 1 Your SCADA System Solutions What Is SCADA? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents DNP3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Other Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Securing the Telemetry Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . What To Do Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents Chapter 5 Choosing a Device for a Remote Station Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Choose a Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Needed Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Installation Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents 8 Rockwell Automation Publication AG-SG001G-EN-P - April 2015
Preface Use this document as a guide for choosing SCADA system components. This book assumes that you have a thorough understanding of the: • control-system requirements of the application. • locations of the sites that you will be controlling.
Preface Resource Description ControlLogix Controllers User Manual, publication 1756-UM001 Provides information on the ControlLogix controller including its features. Logix5000 Controllers Common Procedures Manual, publication 1756PM001 Provides links to other ControlLogix information. ControlLogix Selection Guide, publication 1756-SG001 Provides information on how to select your ControlLogix controller. You can view or download publications at http://www.rockwellautomation.com/ literature/.
Chapter 1 Your SCADA System Solutions SCADA is an acronym for Supervisory Control and Data Acquisition. Use this book as a guide for choosing SCADA system components. If you are already familiar with SCADA, go to page 18. What Is SCADA? SCADA systems let you monitor and control various remote functions and processes by using modem communication links between master and remote locations.
Chapter 1 Your SCADA System Solutions Variety of Applications There are a variety of SCADA applications: • Water and wastewater applications • Oil and gas production Water and Wastewater SCADA Application These applications use lift stations and water booster stations. Lift Stations Collection systems rely on a series of lift stations and combined sewer overflow (CSO) stations communicating to a central location to prevent sewerage backups and protect the environment.
Your SCADA System Solutions Chapter 1 Figure 2 - Water and Wastewater SCADA Applications Main Pump Station Primary Secondary FactoryTalk FactoryTalk View SE View SE Server Server Ethernet Logix5 RUN POW ER DH +/RIO 550 Control ETHE RNET NET ST 0 1 2 3 4 5 6 RS23 2 FLT 8 9 10 11 12 13 PROG RXD TXD OK AC OUT PUT 7 FLT 0 1 2 3 4 5 6 7 O ST 8 9 10 11 12 13 14 15 K A#2 4 B#1 5 CH A CH B OK REM AC INPU T DC OUT PUT I/O OK BAT RUN ST 0 1 2 3 4 5 6 7 O ST 8 9 10 11 12 13 14 15 K ST 0 1
Chapter 1 Your SCADA System Solutions Oil and Gas Production SCADA Application Oil and Gas Wells There are two main types of wells: Natural Flow and Artificial Lift wells. Monitoring and remote control requirements depend on the type of well. For natural flow well, surface process variables like flowing/casing pressure and temperatures and the position of the flowing valve need to be monitored and gas wells include compensated flow calculations. Remote control is limited to the shutdown valve.
Your SCADA System Solutions Chapter 1 Figure 3 - Oil and Gas Production SCADA Applications Well RTU Well RTU Main Pump Station Primary Secondary FactoryTalk FactoryTalk View SE View SE Server Server PowerFlex 700 MicroLogix 1100 MicroLogix 1100 PowerFlex 700 Ethernet Logix5 DH +/R IO 550 RUN POWER Contro ETH ERNET l NET DC OUTPU T I/O ST 0 1 2 3 4 5 6 RS232 FLT 8 9 10 11 12 13 CH A CH B OK REM PROG RXD TXD OK AC I NPUT AC O UTP UT 7 FLT 0 1 2 3 4 5 6 7 O ST 8 9 10 11 12 13 14 15 K
Chapter 1 Your SCADA System Solutions System Flexibility Rockwell Automation has developed a close relationship with several companies who supply SCADA-related hardware and software. Through the Encompass Program, we reference hardware and software companies that provide additional products to meet your application needs. We review each company to make certain it provides the quality and service you deserve. For the latest information, refer to the Encompass Program Product Directory, at: http://www.
Your SCADA System Solutions Chapter 1 Integral Communication Built-in communication support means less equipment to buy. • Choose versions of ControlLogix, CompactLogix, MicroLogix, or Micro800 controllers that have built-in or plug-in serial ports. • Select a CompactLogix LxxE, MicroLogix 1100/1400, or Micro850 controller for built-in Ethernet connectivity that uses standard TCP/IP protocol.
Chapter 1 Your SCADA System Solutions We offer a world-wide technical support network to answer your questions. Support • Rockwell Automation Technical Support provides help via telephone or at your control sites. • Allen-Bradley local distributors provide quick turnaround on your orders and local support. • Allen-Bradley and Rockwell Software product training courses are available. Contact your local Rockwell Automation sales office or AllenBradley distributor for information.
Your SCADA System Solutions Chapter 1 Figure 4 - SCADA System Components 3. Master Station 2. DCE 1. Telemetry Network 4. Remote Station 5. Modular Processor with I/O 4.
Chapter 1 Your SCADA System Solutions Use this worksheet as a quick guide to specifying a system.
Chapter 2 Choosing a Telemetry Network A telemetry network provides the communication pathway in a SCADA system. Topologies, transmission modes, link media, and protocols make up a telemetry network.
Chapter 2 Choosing a Telemetry Network Choosing a Topology Topology is the geometric arrangement of nodes and links that make up a network. For a SCADA system, choose among point-to-point, point-tomultipoint, and multipoint-to-multipoint topologies. Point-to-point Point-to-point is a communication link between only two stations, where either station can initiate communication with the other, or one station can inquire and control the other.
Choosing a Telemetry Network Chapter 2 Point-to-multipoint connections are generally four-wire connections, with the transmission media using four wires for signal transmission/reception: one pair to transmit and one pair to receive. Private leased lines and digital data services provide four-wire, point-to-multipoint connections. TIP Point-to-multipoint is the main topology for SCADA applications.
Chapter 2 Choosing a Telemetry Network Choosing a Transmission Mode The transmission mode defines the way information is sent and received between and/or among devices on a network. For SCADA systems, your network topology generally determines your data transmission mode. If you have chosen this topology Point-to-multipoint Then your transmission mode is Which means Half-duplex Information is sent in one direction at a time over the link.
Choosing a Telemetry Network % % Chapter 2 Public-switched Telephone Network (PSTN) or General Switched Telephone Network (GSTN) The dial-up network is furnished by a telephone company. This telephone line is the one that we use daily and that carries voice and data transmissions. Advantages/Capabilities • Public-switched telephone networks are cost-effective for: – short, occasional data collection from remote sites that have access to a PSTN. – sites calling in to a central location.
Chapter 2 Choosing a Telemetry Network Private Leased Line (PLL) PLL PLL Phone Company PLL is a dedicated telephone line that is a permanent connection between two or more locations and that is used for analog data transmission. The line is available 24 hours a day. In order for the line to be used for voice communication, a voice option must be installed.
Choosing a Telemetry Network Chapter 2 Digital Data Services (DDS) DDS DDS Phone Company DDS is a special wide-bandwidth private leased line that uses digital techniques to transfer data at higher speeds and at a lower error rate than private leased lines. The line is available 24 hours a day. Advantages/Capabilities • DDS is a digital network that offers higher transmission rates and minimal, if any, line impairments.
Chapter 2 Choosing a Telemetry Network Internet via Internet Service Provider (ISP) Advantages/Capabilities • High-speed broadband Ethernet network connections readily available in metropolitan areas • Low monthly fixed cost for continuous data connections • Minimal capital costs • Remote access possible to/from anywhere on the Internet Disadvantages • Dependent on a public network (may not be available when needed most) • Requires network security precautions to prevent unauthorized access Equipment Re
Choosing a Telemetry Network Chapter 2 Disadvantages • Transmission is limited to a line-of-sight, for example, you cannot transmit through mountains. The signal can experience distortion and interference. Also, atmospheric conditions such as rain, snow, or fog can affect the signal. • Most microwave link frequencies are allocated and regulated by the Federal Communications Commission (FCC). In urban areas, fewer datatransmission frequencies are available.
Chapter 2 Choosing a Telemetry Network Disadvantages • Repeaters are needed to extend transmissions over distances greater than 15 miles. • Most radio link frequencies are allocated and regulated by the FCC. In urban areas, fewer data-transmission frequencies are available. • The signal from 900 MHz and higher transmitters can experience distortion and interference, and can be affected by poor weather conditions. • The narrow bandwidth carries only one channel.
Choosing a Telemetry Network Chapter 2 Disadvantages • You can encounter longer transmission delays, measured in seconds rather than milliseconds as for other media. • You incur a large initial cost for the satellite dish and supporting equipment.
Chapter 2 Choosing a Telemetry Network Dedicated Wire With dedicated wire modems, you can transmit and received data over a pair of copper conductors for extended distances.
Choosing a Telemetry Network Choosing a Protocol Chapter 2 A protocol governs the format of data transmission between two or more stations, including handshaking, error detection, and error recovery.
Chapter 2 Choosing a Telemetry Network DF1 Radio Modem Protocol Using DF1 radio modem protocol in radio modem configurations provides one or more of these advantages, depending upon the radio modem used: • Any station can initiate to any other station at any time for true Report-byException capability. • Any station can be configured to be a Store & Forward node between nodes that are not within radio reception range of one another. • Any station can be programmed over the radio network.
Choosing a Telemetry Network Chapter 2 DNP3 DNP3 Slave is a serial and Ethernet SCADA/RTU protocol built into the DataSite RTU and MicroLogix 1400 controller. DNP3 Master OPC drivers for FactoryTalk View SE software are available from Encompass Partners Kepware Technologies and MatrikonOPC, and DNP3 Master/Slave interface modules for various Allen-Bradley controllers are available from Encompass Partner Prosoft Technology. Distributed Network Protocol version 3.
Chapter 2 Choosing a Telemetry Network • Security DNP3 offers a Secure Authentication option. This is a sophisticated mechanism that the RTUs can use to verify that the communication packets actually came from their master and vice versa. This prevents hackers from using spoofing or replay to disrupt RTU operations and can be used in conjunction with other security measures such as encryption.
Choosing a Telemetry Network Chapter 2 Table 2 - Protocols Available from Third-party Suppliers Protocol Allen-Bradley form factor Installation Master Slave • Allen-Bradley DF1 halfduplex • AMOCAMS 500 • BIF (BRITE) • Caterpillar Gas and Diesel Engine • Caterpillar Digital Voltage Regulator • Controlotron • Danload 6000 • Data Aire • Dynalco TM5000 and TEC9000 • GE SNP • HSQ • Leeds & Northrup Conitel C2020 • Liebert • Modbus ASCII and RTU • Omron Host Link • Power Measurements Ltd.
Chapter 2 Choosing a Telemetry Network Communication Drivers Rockwell Software also sells communication drivers from KEPware. KEPServer Enterprise software, a set of communication drivers, which enable OPC connectivity to many third-party devices. Use KEPServer Enterprise software with FactoryTalk View SE software on Windows XP and Windows 2000 systems. KEPServer Enterprise software is catalog number 9301OPCSRVENE. The following drivers are available with KEPServer Enterprise software.
Choosing a Telemetry Network What To Do Next Chapter 2 Record your telemetry network choices on the selection worksheet (page 20). You should have defined the: • topologies. • transmission modes. • link media. • protocols. Go to the next chapter to choose your data communication equipment.
Chapter 2 Choosing a Telemetry Network Notes: 40 Rockwell Automation Publication AG-SG001G-EN-P - April 2015
Chapter 3 Choosing Data Communication Equipment Overview Data Communication Equipment (DCE) is the link between a transmission medium and master and remote stations (data terminal equipment or DTE). Data communication equipment includes phone and radio modems as well as microwave and satellite transmission equipment. Master Station Remote Station Remote Station Remote Station Choose the data communication equipment appropriate for the communication media you have chosen.
Chapter 3 Choosing Data Communication Equipment Choosing a Telephone Modem Modems convert digital information from a programmable controller or computer to an analog signal that is compatible with the communication media being used. The signal is then transported to the receiving modem, which converts the analog signal back into a digital one. In the illustration below, digital data from each DTE is converted to an analog signal for transmission over the communication media.
Choosing Data Communication Equipment Chapter 3 • Requirements of the DTE devices to which you are connecting. – Do you need asynchronous or synchronous operation? TIP If you are using all Allen-Bradley DTE devices, choose an asynchronous modem. – What interfaces do you need (RS-232, MIL 188, EIA-449, IEEE 488, CCITT V.24)? – What other features are required to support your DTEs? • Required standards (for example, UL, CSA, and FCC). • Space requirements.
Chapter 3 Choosing Data Communication Equipment Consult the vendor for information about their product offerings. Supplier Maximum Transmission Rate Modem Model DATA-LINC Group 33600/28800 DLM4000/DLM4500 Miille Applied Research Co. Inc.
Choosing Data Communication Equipment Chapter 3 Whether an application uses 2-wire or 4-wire leased lines, choose remote modems that support switched modem carriers. Modem Suppliers See the following table for a listing of recommended analog leased-line modem suppliers and respective modem models. Consult the vendor for information about their product offerings.
Chapter 3 Choosing Data Communication Equipment Telephone Modem and ISU Installation Guidelines Telephone modems and ISUs require a telephone-company approved connector. Consult your modem/ISU vendor for installation requirements. You can use radio modems for point-to-point, point-to-multipoint, or multipoint-to-multipoint applications. Choosing a Radio Transmission System The primary consideration for radio modems is the radio frequency band in which they operate.
Choosing Data Communication Equipment Chapter 3 • Required standards (for example, UL, CSA, or FCC) • Whether the radio modem is composed of an integrated unit or a radio and a modem as separate units • Radio modem design and operation • Data security • Required response time • Ability to buffer serial data and avoid data collisions between radio modems to allow Report-by-Exception • Ability to route DF1 data packets and to store and forward Licensing There are two major types of radio networks; licensed
Chapter 3 Choosing Data Communication Equipment Licensed Fixed-frequency vs Unlicensed Spread-spectrum Considerations Consider the following when choosing either a licensed fixed-frequency or an unlicensed spread-spectrum system: • The licensed fixed-frequency option requires a license - this can be an issue in urban areas where available frequencies are already allocated. However, in recent years the FCC has subdivided the existing licensed frequency bands to make more available.
Choosing Data Communication Equipment Chapter 3 Radio Modem Types There are two types of radio modems: Ethernet modems and Serial modems. Ethernet Radio Modems Ethernet radio modems have a standard IEEE 802.3 (10Base-T or 100BaseT) interface that can connect directly to the Ethernet port on the computer or PLC, or to the Ethernet network via a bridge or router. Serial Radio Modems Serial modems may be sold as: • integrated units. – Key-up time between the radio and modem is integrated fully.
Chapter 3 Choosing Data Communication Equipment For Point-to-multipoint (or Broadcast) Half-duplex Applications Choose full-duplex master radio, half-duplex master radio, or half-duplex remote radios. For best performance use a ‘master’ radio modem capable of full-duplex operation, since a full-duplex radio modem has a transmitter that is separate from the receiver. This provides shorter RTS-to-CTS delays with each master station data transmission.
Choosing Data Communication Equipment Chapter 3 Modem Suppliers The following table lists radio modem suppliers and the modems they sell. Consult the vendor for information about their product offerings. Encompass Partner Modem Model# RF Transmission Rate Frequency Type Published Line-ofSight Range CalAmp (Dataradio) Integra-TR 2424018 19.2 kbps 132 to 174 MHz Serial 30 miles T-96SR 242-4016 19.2 kbps 132 to 174 MHz Serial 30 miles Viper 140-5018 19.
Chapter 3 Choosing Data Communication Equipment Encompass Partner Modem Model# RF Transmission Rate Frequency Type Published Line-ofSight Range FreeWave Technologies LRS-455 19.2 kbps 435 to 470 MHz. Serial 60 miles LRS-760 38.4 kbps 757 to 788 MHz. Serial 30 miles FGR2-CE-U 115.2 or 153.6 kbps 902 to 928 MHz(1) Serial 60 miles HTPlus 867 kbps 902 to 928 MHz(1) Ethernet 15 miles FGRplus RE 154 kbps 902 to 928 MHz(1) Ethernet 60 miles LRS-140 19.2 kbps 1.427 to 1.432 GHz.
Choosing Data Communication Equipment Chapter 3 • Ethernet supports higher transmission speeds. However, consider that this may be offset by the fact that Ethernet is usually less efficient in transmitting industrial data than serial protocols. This is because industrial data typically consists of smaller packets (for example, control information) than commercial data (for example, file downloads). The overhead of an Ethernet packet is usually much greater than that of a typical serial packet.
Chapter 3 Choosing Data Communication Equipment You can choose a single-hop system that shares the inbound and outbound channels with others to offset costs. Double-hop A VSAT site is directly connected to your master or remote station. This VSAT beams the data to the satellite, which beams the data to either the remote site or master site. With a double-hop system, you are not dependent upon the availability of terrestrial leased lines.
Choosing Data Communication Equipment Choosing Dedicated Wire/ Power Line Modems Chapter 3 You can easily integrate dedicated wire/power line modems into your application. You need a suitable dedicated wire pair or power line and an RS-232 interface. The following table lists the recommended dedicated wire/power line modem supplier and modem models. Consult the vendor for installation requirements and detailed information about their product offerings.
Chapter 3 Choosing Data Communication Equipment Two major components of the cellular network are the remote site and the host or central site. The remote site has application devices locally networked and communicate to the host site by using the cellular network through a gateway. These devices could be a PLC or other equipment like an embedded computer. The host site runs an application server that could be a web server that is responsible for running the application.
Choosing Data Communication Equipment Chapter 3 Table 4 - Comparison of Cellular Modems from Rockwell Automation Encompass Partners Partner Name Product Name / Catalog Number Description Digi International Digi Connect WAN IA (Verizon) / DCWAN-G511 • Uses Verizon CDMA. • Din rail mountable. • Class 1, Div 2 Digi International Digi Connect WAN IA GSM/ DC-WANF501 • Uses GSM EDGE. • Din Rail mountable. • Class 1, Div 2 approved. CalAmp LandCell 882 • Applies GSM and CDMA technology.
Chapter 3 Choosing Data Communication Equipment While it may seem that using the TCP mechanism should be the obvious choice, this is not always true. TCP gives room to a lot of network overhead as it initiates packet retransmissions and Acknowledgement packets whenever it detect a loss in data receipt. Several applications employ their own data delivery integrity validation procedures and do not require the network to validate data delivery for it.
Choosing Data Communication Equipment Chapter 3 Advantages and Disadvantages over other Modem Technologies Listed are the advantages and disadvantages of choosing a cellular transmission system over other modem technologies. Advantages • Ability to use existing secure cellular infrastructure thereby significantly reducing cost of cabling and antenna towers. • Increases mobility of users.
Chapter 3 Choosing Data Communication Equipment Notes: 60 Rockwell Automation Publication AG-SG001G-EN-P - April 2015
Chapter 4 Choosing a Device for a Master Station Overview Topic Choosing a Computer-based Master Station Choosing a Programmable Controller-based Master Station Choosing a Data-concentrating Submaster Station Choosing a Data-routing Submaster Station Needed Equipment Installation Guidelines What To Do Next Page 63 65 66 67 69 69 69 The master station in a SCADA system does the following: • Gets field data by periodically reading and/or receiving data directly from the remote stations or through a subm
Chapter 4 Choosing a Device for a Master Station Very large applications can also require submaster stations, which: • gather data from the remote stations within a region. • support local operator interface for the region. • support logging of alarms and events. • communicate remote station data and support control commands. • interface with a larger, host master station. In the illustration below, a submaster station controls remote sites within a region.
Choosing a Device for a Master Station Choosing a Computerbased Master Station Chapter 4 For many small SCADA configurations, a personal computer running Rockwell Software FactoryTalk View SE software and DNP3 OPC Driver can meet the requirements for both the operator interface and the master station. FactoryTalk View SE software provides not only an operator interface but also master station functionality, both at the same time.
Chapter 4 Choosing a Device for a Master Station Using FactoryTalk View SE Software as a Plant HMI Redundant Servers Ethernet Ethernet Based Master Station Serial or Ethernet Remote Station(s) Minimum requirements: • Personal computer with Windows XP or later operating system • Ethernet communication card • Cables • FactoryTalk View SE software • RSLinx communication server software • For the PLC-based master station requirements, see Choosing a Programmable Controller-based Master Station 64 Rockwel
Choosing a Device for a Master Station Choosing a Programmable Controller-based Master Station Chapter 4 Choose a programmable controller-based master station if any of these requirements exists: • The master station must be able to control local I/O. • Your application requires master station redundancy. • More robust and flexible PLC hardware platform for polling remotes. Use this chart to help you choose a programmable controller master station.
Chapter 4 Choosing a Device for a Master Station Choose the programmable controller based on processor memory requirements. The following table provides a selection guideline for programmable controllerbased master stations. The guidelines are based on a maximum of 4 K of programming memory for the polling master application logic and 200 words of data table memory per remote station. Other application requirements might dictate specifying a larger processor.
Choosing a Device for a Master Station Chapter 4 Figure 7 - Controllers Configured as a Submaster Communication with Master Station Serial or Ethernet MicroLogix 1400 Serial or Ethernet Remote Site A Remote Site B Remote Site C MicroLogix CompactLogix SLC Choosing a Data-routing Submaster Station If your application requires one or more data-routing submaster stations, the master station and the submaster stations can either be ControlLogix or CompactLogix processor-based.
Chapter 4 Choosing a Device for a Master Station In this application, not only can the submaster communicate directly with its master or remote stations, but the master can initiate messages to the remote stations by routing through the submaster, with no additional programming or data table memory used in the submaster.
Choosing a Device for a Master Station Chapter 4 Needed Equipment Allen-Bradley offers a wide variety of chassis, power supplies, and I/O modules to help you automate your application. Installation Guidelines You must provide an appropriate environment and proper grounding for programmable controller systems. See the Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1, for more information.
Chapter 4 Choosing a Device for a Master Station Notes: 70 Rockwell Automation Publication AG-SG001G-EN-P - April 2015
Chapter 5 Choosing a Device for a Remote Station Overview Topic Choose a Device Needed Equipment Installation Guidelines What To Do Next Page 72 73 73 74 A remote station in a SCADA application does the following: • Controls inputs and outputs of field devices, such as valves, metering equipment, and drives • Monitors conditions of the field devices and logs alarms • Reports status to the master station and carries out the commands it receives from the master station Remote DataSite RTU Remote Compact
Chapter 5 Choosing a Device for a Remote Station Choose from a variety of remote stations that fit your application and cost requirements. The most cost-effective remote station for applications that use limited analog and/or discrete I/O are the Micro800 and MicroLogix families of programmable controllers.
Choosing a Device for a Remote Station MicroLogix 5/03 5/05 Micro800 830 850 L35E 1500 LRP DataSite RTU L32E 1400 ControlLogi x L31 1200 CompactLogix L23E 1100 SLC L23 Controller Specification Chapter 5 Local AI points, max 34 24 60 256 480 480 3 6 36 25 6 25 6 48 0 128 8 20 36(11) Local AO points, max 16 12 30 128 240 240 1 8 18 12 8 12 8 24 0 128 2 10 26(11) Available User 24V DC (mA), max 250 400 250 400 100 0 100 0 0 0 75 0 75 0 75 0 0 0 N
Chapter 5 Choosing a Device for a Remote Station What To Do Next You should choose a remote station for each remote site in your application. Finalize any telemetry requirements. Record these choices on the worksheet (page 20). • Finalize any telemetry equipment decisions. • Consult the related publications on page 9 to begin designing any needed control systems.
Appendix A Third-party Supplier Contact Information Introduction This section lists contact information for the third-party products mentioned in this document. For more information about either the vendors or products, do any of the following: • Contact the vendor directly • Visit the Encompass website at www.rockwellautomation.com/encompass Contact your local Rockwell Automation office or distributor.
Appendix A Third-party Supplier Contact Information Contact List Please use this as a reference. This list is not all-inclusive. Company Product Offering Contact Information Website Cal Amp Data Com Licensed and spread-spectrum radio modems and cellular modems. 299 Johnson Ave. Waseca, MN 56093 Phone: 1.507.833.8819 Toll Free: 1.800.992.7774 http://www.calamp.com Cisco Systems, Inc. Wireless Ethernet modems. 170 West Tasman Dr. San Jose, CA 95134 Phone: 1.408.526.4000 http://www.cisco.
Glossary The following terms and abbreviations are used throughout this manual. For definitions of terms not listed here, refer to the Allen-Bradley Industrial Automation Glossary, publication AG-7.1. ACK See Acknowledgment. Acknowledgment An ASCII control character that indicates the transmission and acceptance of data. Asynchronous Transmission A method of serial transmission where characters may be transmitted at unequal time intervals.
Glossary Digital Data Service (DDS) A special wide-bandwidth Private Leased Line (PLL) that uses digital techniques to transfer data at higher speeds and with lower error rates than voice-band, analog PLLs. DSR Data-Set-Ready. A signal that indicates the modem is connected, powered up, and ready for data transmission. DTE Data Terminal Equipment. Equipment that is attached to a network to send or receive data, or both. Programmable controllers, workstations, and interface modules are examples of DTEs.
Glossary Integrated Service Unit (ISU) Data communication equipment for a digital data network, which serves as the data transmitting and receiving device. An ISU is a combination of a digital service unit (DSU) and a channel service unit (CSU). Link A data channel established between two or more stations.
Glossary Parallel Port An electrical connection on a computer capable of transmitting or receiving two or more bits of data at one time. The communication port to which such devices as parallel printers can be attached. Point-to-multipoint A network where connections exist between one master station and multiple remote stations. Point-to-point A network where a connection is made between two and only two terminal installations.
Glossary Slave See remote station. Slave Protocol See Half-duplex Protocol. Serial Port An electrical connection on a computer that handles data bits one after another. The communication port (COM1 or COM2) to which devices such as a modem, a mouse, or a serial printer can be attached. Spurious Character A false or unexpected character received when none is expected. Standard Radio Modem An assembly that contains both a radio and a modem, which transmits data without any special handling.
Glossary Notes: 82 Rockwell Automation Publication AG-SG001G-EN-P - April 2015
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