Fieldbus expansion module XD-BD series

modularwith programmable logic controller (PLC)compact

Product Overview
The compact expansion BD board installs directly on an XD series basic unit without occupying additional space, providing communication port expansion and an optional precision clock function to increase system flexibility and scalability.

Key features

• Compatible with XD series basic units.
• Up to 2 boards can be installed on the front of a basic unit.
• Communication BD board models and functions:
  • XD-NS-BD: expands RS232 port.
  • XD-NE-BD: expands RS485 port.
  • XD-NO-BD: expands RS485 / fieldbus fiber-optic communication.
• Precision clock expansion BD board: XD-RTC-BD provides improved clock accuracy (approx. 13 seconds/month).

Applications / Functions

• Direct front-mounted expansion on XD series basic units.
• Communication interface expansion (RS232, RS485, fiber/fieldbus) to enhance connectivity with external devices and networks.
• Optional precision clock for applications requiring improved timing accuracy.

Technical specifications

• Series: XD series
• Product type: Expansion BD board (communication and/or clock expansion)
• Compatibility: XD series basic units
• Maximum expandable units: up to 2 boards installed on the front of the basic unit
• Communication expansion models: XD-NS-BD (RS232), XD-NE-BD (RS485), XD-NO-BD (RS485 / fieldbus fiber-optic)
• Precision clock model: XD-RTC-BD (approx. 13 seconds/month clock error)
• Installation: directly installed on the basic unit without taking up extra space
• Main functions: communication expansion, clock/precision timing expansion