CompactBlock I/O
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Bulletin 1791D CompactBlock™ I/O can be distributed throughout your plant for heavy-duty applications, especially where space is limited. Base blocks include I/O points and a built-in DeviceNet™ network communication adapter. Digital and analog I/O expansion blocks provide the flexibility to add I/O points to your CompactBlock I/O system. Integrated DeviceLogix™ Smart Component Technology provides low-cost logic solving capability in your I/O for faster sense-to-actuation times. |
Features
- Compact size for installation in shallow cabinets, operator workstations, and wireways
- 24V DC IEC/NEMA Type 3+ inputs on digital blocks
- Electronically protected outputs on digital blocks
- Supports connection of an expansion block to your base block to expand I/O count up to 32 points per assembly
- Rotary switches and autobaud rate detection ease commissioning
- Removable screw-clamp terminal strips make it easy to replace an I/O block without rewiring
Products
1791 CompactBlock™ Digital I/O Base Blocks
- Built-in DeviceNet™ communication adapter
- DeviceLogix™ Smart Component Technology
- 16 I/O points per block
- Supports one digital or analog expansion block
1791 CompactBlock Digital I/O Expansion Blocks
- Add to base blocks to expand the I/O assembly up to as many as 32 I/O points
- 16 inputs or outputs per block
- Includes 4-cm ribbon cable connector; longer cables are available
1791 CompactBlock Analog I/O Expansion Blocks
- Add to base blocks to expand the I/O assembly up to as many as 32 I/O points
- 4 single-ended inputs; 2 single-ended outputs
- 12-bit integer data format
- Includes 4-cm ribbon cable connector; longer cables are available
Certifications
- UL, c-UL-us Class I, Div 2/Zone 2 Hazardous, CE, C-Tick, ODVA
Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.
Learn More
Our DeviceLogix Smart Component Technology integrates logic-solving capability into I/O, motor starters, push buttons, and other control components, delivering higher-performance and lower-cost distributed control.
Frequently Viewed Publications
| Title | Number | Language |
|---|---|---|
| CompactBlock I/O Product Profile | 1791D-PP002 |  EN |
| CompactBlock I/O, CompactBlock LDX I/O Selection Guide | 1790-SG001 | EN |
| More 1791D/P/R CompactBlock I/O publications in Literature Library | All Languages | |
Product Catalog
Find catalog numbers, certifications, and specifications.
- Bulletin 1791 CompactBlock Digital I/O Base Blocks
- Bulletin 1791 CompactBlock Digital I/O Expansion Blocks
- Bulletin 1791 CompactBlock Analog I/O Expansion Blocks
Certifications
See our Product Certification site for Declarations of Conformity, certificates and other certification details.
Can’t Find What You Need?
Browse our Literature Library where you can search for additional publications in more languages. You can also use the Advanced Search feature to search by catalog number, publication type, title, or keywords to narrow your results.Build This Catalog Number
Build or verify a catalog number, and get information and CAD drawings for these products.
Configuration & Selection Tools
- eCADWorks — Select product 3D-CAD drawings in AutoCAD®.
- Integrated Architecture Builder — Select hardware and generate bills of materials for projects.
- ProposalWorks — Build complete quotes and proposals.
Other Resources
- Electronic Data Sheets — Find DeviceNet™, ControlNet™, EtherNet/IP™, and network-independent EDS files.
- DeviceLogix Electronic Data Sheets — Find DeviceLogix EDS files.
- Knowledgebase — Visit our online resource for technical information, support chat and forums, software updates, and product safety advisories/notices.
Accessories
We offer a variety of accessories for your CompactBlock™ I/O Modules, including:
- Cables and connectors
- DeviceNet communication cable assemblies
- DeviceNet straight 5-pin open plug to 5-pin micro male connectors