Overview
Connecting with Confidence™ with Allen-Bradley® Distributed I/O
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Rockwell Automation is the only company that offers the experience with world-class I/O products for virtually every need. Choose from I/O that is distributed around the application or integrated with the controller. Allen-Bradley I/O offers the greatest advantage with the power of the NetLinx™ Open Networks.
Whether you choose a ControlLogix® or CompactLogix® programmable automation controller, a PLC-5®, SLC™ 500, or MicroLogix™ programmable logic controller, or the GuardLogix™ safety programmable controller, each offers I/O that you can install locally in the same chassis as the processor. Through the use of I/O communication networks, you can also distribute I/O in locations remote from the processor, closer to the sensors and actuators, reducing your wiring costs.
Having the freedom to monitor and control I/O across an I/O link means you can select I/O products from a variety of platforms that include a variety of integrated termination solutions.
Rockwell Automation also offers a wide selection of more granular distributed, In-Cabinet™ (IP20) I/O for use in your control system. These range from simple 4 I/O blocks up to 128 I/O blocks, to modular I/O that offers increased flexibility for your exact needs, or intrinsic safety. For mounting On-Machine™, we offer a line of hardened (IP67/69K) block or module I/O to reduce your wiring and system costs.
In addition, you can take advantage of our DeviceLogix™ Smart Component Technology that integrates low cost logic solving capability in your I/O. DeviceLogix-enabled I/O performs simple control functions locally without the performance constraints typically imposed by a centralized controller and a communication network.
Rockwell Automation also offers distributed safety I/O modules, including I/O that can be located on the machine close to sensors and actuators, controlled from a safety PLC. A distributed safety I/O module continuously monitors its internal functions to make certain that it is functioning and available if a safety demand is placed on the system. It also provides valuable detailed diagnostic information to the machine operators and maintenance personnel making troubleshooting easier and thereby improving overall machine utilization.
Chassis-based I/O
Chassis-based I/O is specifically designed for a particular controller, as part of its family. Allen-Bradley chassis-based I/O systems are also capable of being mounted away from the controller via networks.
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| 1756 ControlLogix I/O | 1769 Compact I/O | 1771 Universal I/O | 1746 SLC I/O | 1762 MicroLogix Expansion I/O | |
| I/O Types | Digital, Analog, Thermocouple, RTD, Motion | Digital, Analog, Thermocouple, RTD | Digital, Analog, Thermocouple, RTD | Digital, Analog, Thermocouple, RTD | Digital, Analog, Thermocouple, RTD |
| Module Density | 4 to 32 points per module | 4 to 32 points per module | 4 to 32 points per module | 4 to 32 points per module | 4 to 32 points per module |
| Primary Controller (in bold) and Compatible Controllers |
ControlLogix, SoftLogix5800 | CompactLogix, MicroLogix 1500, SoftLogix5800 | PLC-5, ControlLogix, SoftLogix5800 | SLC 500, PLC-5 | MicroLogix 1100, 1200, 1400 (local only) |
| Specialty Modules | • Counter In • Positioning Module • Hi-Res Frequency Monitor • Flow Totalizer Rate Meter • Serial ASCII • Hydraulic Control • Weigh Scale • Resolver Interface • Programmable Limit Switches • LDT Interface • Sequence of Events Input |
• Counter In • Resolver Interface • Serial ASCII • Address Reserve Module • LDT Interface • Weigh Scale • Stepper Module • Strain Gage • Boolean |
• Counter In • Positioning Module • Hi-Res Frequency Monitor • Flow Totalizer Rate Meter • Serial ASCII • Temperature Control • Hydraulic Control • Weigh Scale • Plastics • Resolver Interface • Programmable Limit Switches • Serial Synchronous Interface (SSI) • LDT Interface • Time Stamp • Die Monitoring • Signature Analysis |
• Counter In • Positioning Module • Serial ASCII • Temperature Control • Hydraulic Control • Weigh Scale • Plastics • Resolver Interface • Programmable Limit Switches • LDT Interface • Die Monitoring • Signature Analysis |
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| Network Connectivity | ControlNet, EtherNet/IP, DeviceNet, Universal Remote I/O | DeviceNet | ControlNet, Universal Remote I/O | Universal Remote I/O, ControlNet | EtherNet/IP, DeviceNet, DH-485 (local only) |
| Environmental Style | IP20, Class I, Division 2/Zone 2 | IP20, Class I, Division 2/Zone 2 | IP20, Class I, Division 2/Zone 2 | IP20, Class I, Division 2/Zone 2 | Class I, Division 2 |
| Max. Modules per Chassis/Controller | Up to 16 modules per chassis | Up to 30 local modules | Up to 16 modules per chassis | Up to 13 modules per chassis Max. 3 chassis, 30 modules per CPU/node |
Up to 4 local modules for MicroLogix 1100 Up to 6 local modules for MicroLogix 1200 Up to 7 local modules for MicroLogix 1400 |
| For product certification information go to http://www.ab.com/certification. | |||||
Cables and Cordsets
| Connect to your Allen-Bradley sensors or other field devices with the following cables and cordsets. | ||||||
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| Bulletin 1667 PanelConnect |
Plus | Bulletin 889 Patchcord |
Plus | Bulletin 898 Distribution Box |
Plus | Bulletin 889 Patchcord |
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| Bulletin 888 Receptacle |
Plus | Bulletin 889 Patchcord |
Plus | Bulletin 898 Distribution Box |
Plus | Bulletin 889 Patchcord or Bulletin 879 Y-Cable |
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| Bulletin 898 Distribution Box |
Plus | Bulletin 889 Patchcord or Bulletin 879 Y-Cable |
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| Bulletin 888 Receptacle | Plus | Bulletin 889 Patchcord | ||||
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| Bulletin 889 Cordset | ||||||
| For additional information on Allen-Bradley wiring and connection systems, go to www.ab.com/io and www.ab.com/sensors. | ||||||
In-Cabinet Distributed I/O
Distributed I/O can be mounted In-Cabinet (IP20) requiring an enclosure, or On-Machine™ (IP67) not requiring an additional enclosure for environmental protection and allowing easier maintenance. Both Distributed I/O types are offered in modular and block I/O styles. Modular I/O is a system of interface cards and communications adapters that interface directly to the sensors and actuators of the machine/process and communicate their status to the controller via a communication network. It allows the designer to mix and match I/O interfaces and communications adapters. Block I/O is a complete assembly of sensor and actuator interface points including a network adapter. It may or may not include a power supply and is available in fixed configurations.
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| 1734 POINT I/O | 1794 FLEX I/O | 1797 FLEX Ex I/O | 1790D CompactBlock LDX I/O | 1791D CompactBlock I/O | 1791DS/ES CompactBlock Guard I/O | 1753 GuardPLC Safety I/O | |
| I/O Types | Digital, Analog, AC/DC, Thermocouple, RTD, Specialty, Safety | Digital, Analog, Relay, Thermocouple, RTD | Digital, Analog, Thermocouple, RTD | Digital, Analog, Relay, Thermocouple, RTD | Digital, Analog | Digital 24V DC | Digital, Analog, Relay |
| Module Density | 1 to 8 points per module | 4 to 32 points per module | 4 to 16 points per module | 4 to 32 points per module | 4 to 16 points per module | 8 to 16 points per module | 8 to 28 points per module |
| Specialty Modules | • Encoder • 1 MHz Counter In • Counter In with Outputs • Serial RS232 • RS485 • RS422 • Channel Isolated Thermocouple • RTD • Serial Synchronous Interface (SSI) • Address Reserve |
• HART Analog • Encoder • Counter In • Quadrature Mode • Hi-Res Frequency Monitor • Flow Totalizer Rate Meter • SCANport |
• Hi-Res Frequency Monitor • Flow Totalizer Rate Meter • HART Analog |
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| Network Connectivity | DeviceNet (including SubNet connectivity), ControlNet (Logix controller only), EtherNet/IP (Logix controller only), PROFIBUS DP, OPC/DDE Data Monitoring⋆ | DeviceNet, ControlNet, EtherNet/IP, PROFIBUS DP, Universal Remote I/O, other open networks | ControlNet in hazardous area via coax or fiber. By use of bus isolator: DeviceNet, ControlNet, EtherNet/IP, PROFIBUS DP |
DeviceNet, PROFIBUS DP | DeviceNet, Universal Remote I/O, PROFIBUS DP | DeviceNet, EtherNet/IP | GuardPLC Ethernet |
| Environmental Style | Class I, Division 2/Zone 2, Marine Certification, European ATEX Zone 2 3G | IP20, Class I, Division 2/Zone 2, European Zone 2, Marine Certification | Hazardous Areas, Class I, II & III, Division 1, Zone 1, European ATEX Zone 1 & 22 | IP20 | IP20, Class I, Division 2/Zone 2 | IP20, Class I, Division 2/Zone 2 | IP20 |
| Max. Modules per Node | Up to 63 modules | Up to 8 modules | Up to 8 modules | Up to 4 blocks | 2 blocks | 1 Block | 1 block |
| ⋆ OPC/DDE Data Monitoring does not require a controller when used in conjunction with RSLinx. For product certification information go to http://www.ab.com/certification. |
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Cables and Cordsets
| Connect to your Allen-Bradley sensors or other field devices with the following cables and cordsets. | |||||||
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| Bulletin 888 Receptacle |
Plus | Bulletin 889 Patchcord |
Plus | Bulletin 898 Distribution Box |
Plus | Bulletin 889 Patchcord or Bulletin 879 Y-Cable |
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| Bulletin 898 Distribution Box |
Plus | Bulletin 889 Patchcord or Bulletin 879 Y-Cable |
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| Bulletin 888 Receptacle | Plus | Bulletin 889 Patchcord | |||||
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| Bulletin 889 Cordset | |||||||
| For additional information on Allen-Bradley wiring and connection systems, go to www.ab.com/io and www.ab.com/sensors. | |||||||
On-Machine Distributed I/O
On-Machine control is the placement of automation components directly on a machine rather than housing them in a remote, central cabinet. This is possible with the emergence of more modular, compact devices, plug-and-play connectivity, flexible communication networks, intelligent devices, and a wide array of products with improved environmental ratings. On-Machine components can include everything from programmable controllers, motor starters, drives, sensors, contactors, network media, distribution boxes, and I/O, as well as HMI devices. On-Machine solutions provide reduced wiring and system costs, improved Mean Time to Repair (MTTR), enhanced control system reliability, increased productivity, and greater flexibility.
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| 1738 ArmorPoint I/O | 1792 ArmorBlock MaXum I/O | 1732D/E/P ArmorBlock and Armor WeldBlock I/O | 1732DS ArmorBlock Guard I/O | 1799 Embedded I/O | |
| I/O Types | Digital, Analog, AC, DC, Relay, Thermocouple, RTD | Digital 10…30V DC | Digital 24V DC | Digital 24V DC | Digital 10…30V DC |
| Module Density | 2 to 8 points per module | 2 to 16 points per block | 8 or 16 points per block | 8 or 16 points per block | 10 or 16 points per card |
| Specialty Modules | • 30 types • Serial Synchronous Interface (SSI) • Very High Speed Counter • RS232 • RS485 • Incremental Encoder • Extension cables for I/O and ArmorStart |
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| Network Connectivity | DeviceNet (including SubNet connectivity), ControlNet, EtherNet/IP, PROFIBUS DP | DeviceNet, Round or Flat Media | DeviceNet, EtherNet/IP, PROFIBUS DP | DeviceNet | DeviceNet |
| Environmental Style | IP69K, IP67 (AC) | IP67, NEMA 4X, 6P | IP69K, NEMA 4X | IP67 | IP00 |
| Max. Modules per Node | Up to 63 modules | 1 block | 1 block | 1 block | 1 card |
| For product certification information go to http://www.ab.com/certification. | |||||
Cables and Cordsets
| Connect to your Allen-Bradley sensors or other field devices with the following cables and cordsets. |
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| Bulletin 889 Patchcord |
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| Bulletin 879 Y-Cable |
| For additional information on Allen-Bradley wiring and connection systems, go to www.ab.com/io and www.ab.com/sensors. |