- Connects a supported Ethernet host environment to two FOUNDATION Fieldbus H1 segments
- Maintains the network configuration and schedules required for field-device communication
- Requires engineered segment power, conditioning, termination, grounding, and enclosure protection
1757-FFLD2 is an Allen-Bradley ProcessLogix FOUNDATION Fieldbus Linking Device for two H1 fieldbus segments.
It bridges a supported host network to the H1 device networks and coordinates the applicable fieldbus configuration and communication schedules.
Before replacement, preserve the approved network backup and verify Ethernet settings, both H1 segment designs, terminal assembly, enclosure, grounding, and connected devices.
Availability, condition, price, and shipping time for 1757-FFLD2 are confirmed during quotation.
Allen-Bradley 1757-FFLD2 Fieldbus Linking Device Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Select the two-segment version only when the approved architecture requires two H1 links
- Verify host compatibility, saved schedules, device descriptions, and network addressing
- Engineer each H1 segment according to connected devices and process-control requirements
- Mount the 1757-FFLD2 on the approved DIN rail or panel and maintain the installation clearances specified by Rockwell Automation.
- Before Class I Division 2 use, inspect units shipped from January 2004 through May 2008: H1 terminal blocks without retaining screws are covered by Rockwell Automation’s mandatory safety alert and must be returned for correction.
- After corrective service, confirm the approved firmware revision and redownload the saved fieldbus configuration before recommissioning the 1757-FFLD2.
- Maintain an external backup of Ethernet settings, H1 configuration, and device schedules
- Verify both segment power systems and expected field devices after restoration
- Review linking-device and port diagnostics before returning control to the process
- ProcessLogix systems linking host controllers to FOUNDATION Fieldbus instruments
- Two-segment H1 networks serving distributed process measurement and final-control devices
- Industrial fieldbus architectures requiring centralized Ethernet-to-H1 communication