Product Description

The P0928JK is a high-availability Fieldbus Communications (FBC) module for the Foxboro I/A Series Distributed Control System. It serves as a gateway between the high-speed Nodebus and localized Fieldbus strings, enabling bidirectional, low-latency communication between field devices and control processors.

Built for mission-critical industrial environments, the P0928JK ensures signal integrity, fault tolerance, and robust data flow across distributed control architectures. Its mechanical design provides secure, vibration-resistant mounting in standard I/A Series modular structures, making it ideal for large-scale automation deployments.

Technical Specifications

Industrial Applications

The P0928JK is widely used in:

• Petrochemical and specialty chemical plants

• Power generation facilities

• Remote instrument enclosures (RIEs) managing clusters of FBMs

• Mid-to-large scale DCS networks requiring decentralized Fieldbus control

It ensures high-speed, reliable updates to central operator stations while maintaining robust local control.

Technical FAQ

Role in Redundant Configurations
When paired redundantly, the P0928JK modules share a single “letterbug” address. If the active module experiences a fault, the standby module immediately takes over communication, ensuring zero data loss.

Compatibility with Analog and Digital FBMs
Yes. The P0928JK is protocol-transparent, managing communication for all I/A Series Fieldbus Modules connected to its subordinate string, regardless of signal type.