CompactBlock LDX I/O

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.

1790 CompactBlock LDX I/O  Economical Compact In-Cabinet Block
  • Overview
  • Product Selection
  • Specifications
  • Software
  • Documentation
  • Resources

Features

  • Includes compact package for easy installation in confined areas, including wireways and operator terminals
  • Offers base blocks that provide 4…32 I/O points
  • Includes built-in DeviceNet™ network connectivity
  • Allows addition of expansion blocks to a base block for up to 80 points per node
  • Includes universal sink/source inputs which reduce the number of components to stock and provide flexibility of input types
  • Includes node address switches and autobaud rate detection which simplifies network commissioning
  • Offers choice of fixed screw terminals, or D-shell connector for convenient disconnection

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

To view commonly ordered and quickly available products, use the Product Configuration Assistant for our complete product offerings.

Specifications

TitleNumberDownload
CompactBlock LDX I/O for DeviceNet Technical Data1790D-TD001

Certifications

  • c-UL-us Class I Div 2 Hazardous
  • CE
  • C-Tick
  • ODVA
  • Enclosure meets IP20.

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Software

Learn More

Learn more about Rockwell Software products.

Documentation

TitleNumberDownload
CompactBlock I/O, CompactBlock LDX I/O Selection Guide1790-SG001
CompactBlock LDX I/O for DeviceNet Technical Data1790D-TD001
CompactBlock LDX Analog I/O User Manual1790-UM001
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Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Configuration & Selection Tools

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.