PLC-5 System

At the center of thousands of Allen-Bradley control solutions around the globe, you'll find a PLC-5 controller. The chassis-based, modular family of PLC-5 programmable controllers offers you flexibility in programming, networking, I/O and choice of controllers to match your exact requirements. Well-suited for many diverse applications, the PLC-5 controller brings together existing and future systems by means of networks such as EtherNetp/IP, ControlNet and DeviceNet, and offers connectivity amoung MicroLogix, SLC 500, and ControlLogix controllers. With the flexibility to grow with your needs without your having to sacrifice capital on training investments, the PLC-5 controllers will continue to maintain their value in the years ahead.

Overview

Right For Today. Ready For Tomorrow.

• Over 450,000 PLC-5s and more than 10,000,000 1771 I/O modules installed worldwide
• Flexibility in terms of programming, networking, I/O, and choice of controllers to suit your requirements
• Reliability with a Mean Time Between Failure (MTBF) rating that exceeds 400,000 hours
• Wide range of memory choices to fit your application needs
• Step Forward provides a financial incentive to upgrade to latest technology

New Developments Now Available

• PLC-5 Series C Interface Module (1785-ENET) — adding 10/100Mb EtherNet/IP capability
• PLC-5 Series F Processors (1785-20E, -40E, -80E) — adding 10/100Mb EtherNet/IP capability

A Solid Investment. Today. Tomorrow.

• Exceptional quality now and in the future
• Proven solutions you can build on
• On-going engineering investment
• Commitment to compatibility between products purchased today and newly introduced Rockwell Automation products

Controller

Functional Design

PLC-5 processors are available in a large range of forcible I/O (512 maximum through 3072 maximum) and maximum user memory (6K through 100K words). All are capable of controlling remotely-located I/O. The maximum number of I/O locations ranges from 5 through 125.

Mechanical Design

The PLC-5 processors are single-slot modules that you place into the left-most slot of a 1771 I/O chassis. Some 1771 I/O chassis are built for back-panel mounting and some are built for rack mounting. The 1771 I/O chassis is available in sizes of 4, 8, 12, or 16 I/O module slots. The 1771 I/O modules are available in densities of 8, 16, or 32 I/O per module.

Standards Compliance

• ISO 9000 Registration: Rockwell Automation facilities are registered to ISO 9001 standards. Our quality system for design, development, manufacture, delivery, and internal customer service processes has been verified by third party audits.
• Marine and Off-Shore Applications: PLC-5 controllers have been certified for use in marine and offshore applications around the world by Lloyd's Register, American Bureau of Shipping, Det Norske Veritas, Bureau Veritas, Registro Italiano Navale, Germanischer Lloyd, and the Korean Register of Shipping.
• UL Certification: Generally Rockwell Automation pursues applicable certification by Underwriters Laboratories (UL) for our products. For actual UL recognition of a specific controller, always refer to the label on the product.
• CSA Certification: Generally Rockwell Automation pursues applicable certification by the Canadian Standards Association (CSA) for our products. For actual CSA recognition of a specific controller, always refer to the label on the product.
• European Union Directives: Rockwell Automation products covered by European Union Directives are intended for sale and use within the European market and conform with the essential requirements of these directives. For actual CD conformity of a specific controller, always refer to the label on the product.

Applications

The features of PLC-5 controllers allow them to be suitable for many applications:

• Integration with operator interfaces, I/O and power monitors in the brew house, yeast / fermentation and finishing areas of breweries.
• Direct network connections for power train, paint shop, and other automotive manufacturing applications.
• Affordable remote communication and control to enable SCADA solutions for water / waste-water treatment facilities.
• Integration of control with information systems to facilitate the databases needed for documentation of your production process.
• Real-time control for a quick response to diverse customer demands in metals production.
• Standardization of control throughout a facility in material handling and routing, from baggage, cargo, parcel and container handling to warehousing and distribution of bulk materials.
• Integration of motion, vision, logic and barcode scanners in semiconductor and electronics production to simplify and standardize such critical processes as fabrication.
• Hydraulic positioning or force control on the wet and dry ends of paper machines by means of a PLC-5 system that includes 1771 hydraulic control modules to reduce leaks, extend fluid life and reduce power consumption.
• Industrially hardened control platforms for batch and continuous processes in diverse applications such as petroleum, chemical processing, cement, municipal and military to simplify maintenance.

Software

• Ladder-logic, Sequential Function Control (SFC), and Structured-Text programming
• Advanced Instruction Set (AIS), including file handling, sequencer, diagnostic, shift register, immediate I/O, and program control instructions
• Multiple Main Control Programs for segregation of control tasks
• Processor Input Interrupts
• Global Status Flags
• Programmable Fault Response for reacting to a fault before the system goes down
• Timed Interrupt Routine for examining specific information at specific time intervals

I/O

• 512 thru 3,072 maximum forcible I/O in any mix
• Up to 50,176 maximum non-forcible I/O
• Processor-resident local I/O (1771 I/O modules)
• Extended-local I/O on selected processors (1771 I/O modules)
• Universal remote I/O (1746, 1771, 1794, 1797 I/O modules; 1791D and 1792D I/O blocks)
• DeviceNet I/O (1734, 1769, 1790, 1794, 1797 and 1798 I/O modules; 1791D and 1792D I/O blocks)
• ControlNet I/O on selected processors (1771, 1746, 1794, 1797 I/O modules)

Communication

A PLC-5 processor communicates across the 1771 backplane to 1771 I/O modules in the chassis in which the processor resides. A PLC-5 processor can communicate with I/O across a DeviceNet or Universal Remote I/O link. Selected models of PLC-5 processors can communicate with I/O across a ControlNet or Extended Local I/O link. I/O adapters for 1771 I/O are available for ControlNet, Universal Remote I/O, and Extended Local I/O links. General communication messages can be sent from or received by PLC-5 processors across DeviceNet, ControlNet, or EtherNet networks, as well as Data Highway Plus, RS-232-C, RS-422-A, or RS-423-A networks. You can add a DeviceNet port to any PLC-5 processor with a 1771-SDN scanner module. Each EtherNet PLC-5 processor has an on-board EtherNet port, and you can add an EtherNet port to any PLC-5 processor with a 1785-ENET EtherNet Interface Module.

Networking

• EtherNet
• ControlNet
• DeviceNet
• Data Highway Plus
• RS-232-C,422-A,423-A
• Universal Remote

ControlNet Backup System

In systems that use a ControlNet link for I/O communication, hot backup capability can be established with two ControlNet PLC-5 processors and 1785-CHBM hot-backup memory cartridges.

The ControlNet PLC-5 backup system helps increase the fault tolerance of Allen-Bradley PLC-5 programmable controller systems that use a ControlNet link for I/O communication by providing backup of the PLC-5 processor used in the systems.

Each PLC-5 processor with its own hot-backup memory cartridge (1785-CHBM) installed is located in its own local 1771 I/O chassis with its own power supply. Communication across the ControlNet link keeps the secondary PLC-5 processor updated. Upon detection of a fault, control of the ControlNet link switches from the primary PLC-5 processor to the secondary PLC-5 processor.