Rockwell Automation 1734-485ASC ASCII Serial Module for DeviceNet

Allen-Bradley 1734-485ASC Point I/O Serial Interface Module

The Allen-Bradley 1734-485ASC Serial Interface Module delivers seamless connectivity between DeviceNet networks and industrial ASCII devices. Designed for robust performance in demanding environments, this module supports both RS-485 and RS-422 networks and ensures reliable data transmission with minimal electrical interference.

Technical Specifications

• Brand: Allen-Bradley
• Manufacturer: Rockwell Automation
• Series: POINT I/O
• Model: 1734-485ASC (Full Suffix: 1734-485ASC)
• Module Type: Serial Interface (ASCII)
• Key Switch Position: 2
• Operating Voltage: 10–28.8V DC
• Nominal Supply Voltage: 24V DC
• Current Consumption: 15mA at 24V DC
• Communication Support: RS-485 (2-wire) and RS-422 (4-wire)
• Shielded Cable: Required (single-end grounding)
• Chassis Ground: Via DIN rail (not terminal block)
• Default I/O Buffer Size: 20 bytes (configurable)

Packaging List

• 1 x Allen-Bradley 1734-485ASC Serial Interface Module
• 1 x Removable Terminal Block (1734-TB)
• Documentation Leaflet
• Shipping Method: FedEx, UPS, or DHL

FAQ

• What networks does the 1734-485ASC support?
  It supports both RS-485 (2-wire) and RS-422 (4-wire) networks.
• How should the shield be grounded?
  Always ground the shield at one end only to prevent ground loops.
• Can the I/O buffer size be changed?
  Yes, the default 20-byte buffer can be expanded via configuration.
• Is chassis grounding supported?
  Yes, but only through the DIN rail, not the terminal block.