CompactBlock LDX I/O
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Bulletin 1790D CompactBlock™ LDX I/O is a cost-effective distributed I/O solution for light industrial environments where high-protection specifications and advanced performance features are not required. Base blocks include I/O points and a built-in DeviceNet™ network adapter. Digital I/O expansion blocks provide the flexibility to add I/O points to your CompactBlock LDX I/O system. |
Features
- Compact package for easy installation in confined areas, including wireways and operator terminals
- Base blocks provide 4…32 I/O points
- Built-in DeviceNet™ network connectivity
- Allows addition of expansion blocks to a base block for up to 80 points per node
- Universal sink/source inputs reduce the number of components to stock and provide flexibility of input types
- Node address switches and autobaud rate detection simplify network commissioning
- Choice of fixed screw terminals, or D-shell connector for convenient disconnection
Products
1790 CompactBlock™ LDX Digital I/O Base Blocks
- 24V DC, 120V AC, and relay outputs
- Up to 32 I/O points per block
- Each base block supports up to three expansion blocks
1790 CompactBlock LDX Analog I/O Base Blocks
- Up to four I/O points per block
- 16-bit integer data format
- Each base block supports up to two expansion blocks
1790 CompactBlock LDX Thermocouple and RTD I/O Base Blocks
- 16-bit integer (2's complement) data format
- Thermocouple and RTD base blocks do not support expansion blocks
1790 CompactBlock LDX Digital I/O Expansion Blocks
- Add to base blocks to expand the I/O assembly up to 80 I/O points
- 24V DC, 120V AC, and relay outputs
- 8 or 16 I/O points per block
- Compatible with all base blocks, except for thermocouple and RTD base blocks
- Includes 7-cm ribbon cable connector
Certifications
- c-UL-us Class I Div 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.
Software
- CompactBlock™ LDX I/O modules require RSNetWorx for DeviceNet software, version 3.0 or later (version 7.0 or later recommended).
- Current functions of CompactBlock LDX I/O modules require modular EDS files for RSNetWorx for DeviceNet software.
Learn More
Learn more about Rockwell Software products.
Frequently Viewed Publications
| Title | Number | Language |
|---|---|---|
| CompactBlock LDX I/O Product Profile | 1790-PP002 |  EN |
| CompactBlock I/O, CompactBlock LDX I/O Selection Guide | 1790-SG001 | EN |
| CompactBlock LDX I/O for DeviceNet Technical Data | 1790-TD001 | EN |
| CompactBlock LDX Analog I/O User Manual | 1790-UM001 | EN |
| More 1790 CompactBlock LDX publications in Literature Library | All Languages | |
Product Catalog
Find catalog numbers, certifications, and specifications.
- Bulletin 1790 CompactBlock LDX Digital I/O Base Blocks
- Bulletin 1790 CompactBlock LDX Analog I/O Base Blocks
- Bulletin 1790/D/P CompactBlock LDX Thermocouple and RTD I/O Base Blocks
- Bulletin 1790 CompactBlock LDX Digital 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.
- 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™ LDX I/O Modules, including:
- Cables and connectors
- DeviceNet communication cable assemblies
- DeviceNet straight 5-pin open plug to 5-pin micro male connectors