Description
Product Introduction
The Foxboro P0914XB (RoHS designation RH914XB) is an 8-position horizontal mounting baseplate designed for the Foxboro 200 Series subsystem. Serving as the physical and electrical backbone for I/O processing, the P0914XB holds up to eight 200 Series Fieldbus Modules (FBMs) or Fieldbus Communications Modules (FCMs).
Constructed with built-in redundant power distribution traces and dual HDLC fieldbus communication channels (Bus A and Bus B), the P0914XB ensures high availability for process automation. Pre-fabricated multi-pin connectors on the baseplate allow seamless cable extension (such as the H9290 series) directly to DIN-rail Termination Assemblies (TAs) in marshalling bays, eliminating point-to-point cabinet wiring errors.
Key Technical Specifications
| Parameter | Value |
| Manufacturer | Foxboro (Invensys / Schneider Electric) |
| Part Number | P0914XB (RoHS Equivalent: RH914XB) |
| Series | Foxboro 200 Series Subsystem |
| Slot Capacity | 8 Module Positions (Supports single or redundant FBM pairs) |
| Mounting Orientation | Horizontal Mounting (19-inch rack or panel enclosure) |
| Communication Bus | Dual Redundant 2 Mbps HDLC Fieldbus (Bus A & Bus B) |
| Power Input | Redundant 24V DC backplane power rails via power module connections |
| Field Wiring Link | Multi-pin connectors for pre-fabricated cables (e.g., H9290 series) to TAs |
| Operating Temp Range | -20°C to +70°C (-4°F to +158°F) |
Application Scenarios & The “Trench” Experience
The Trench Story
It is 02:15 AM during an emergency expansion at an offshore gas compression platform. Technicians needed to add 16 new analog input loops to monitor pump bearing temperatures. Space inside the existing remote instrument cabinet was severely constrained. The instrument supervisor selected two horizontal 8-slot P0914XB baseplates, daisy-chaining their fieldbus ports back to the primary FCP280 controller rack. Plugging in the FBM201 cards into the fresh P0914XB slots instantly established backplane power and HDLC communications—allowing rapid loop commissioning before the scheduled shift restart.
Target Application Scenarios
- Distributed I/O Cabinet Expansion: Houses 200 Series FBMs in remote instrument enclosures (RIEs) close to field devices.
- Redundant Module Pairs: Accommodates paired redundant cards (e.g., FBM207, FBM217, FBM242) across adjacent odd/even slots for fault-tolerant I/O operations.
- Marshalling Bay Integration: Connects directly to field terminal strips via factory-shielded cables, keeping high-density field lands organized.
P0914XB
P0914XB
Transparency SOP: Quality Assurance & Testing
Every baseplate undergoes a strict 5-stage workbench validation process prior to dispatch:
- Inbound Visual & Mechanical Inspection: High-magnification check of backplane slot pins, latching mechanics, circuit board traces, and connector shrouds for bent pins or mechanical wear.
- Backplane Electrical Continuity & Short Checks: Automated point-to-point pin checks across 24V DC power rails, ground planes, and HDLC signal lines to rule out micro-shorts.
- Live Controller & Module Communication Handshake: Mounted on a live test rack with a Foxboro Control Processor (FCP280/FCP270) and populated with test FBMs to verify clean MAC address recognition and signal routing.
- Fieldbus Redundancy & Signal Integrity Test: High data loads are passed across all 8 slots while toggling Bus A and Bus B lines to ensure zero packet loss or signal attenuation across backplane traces.
- Anti-Static ESD Packaging: Cleared baseplates are thoroughly cleaned, dried, and sealed in heavy-duty anti-static ESD protective packaging.
The Veteran’s Tech Trap Guide
- ⚠️ Horizontal vs. Vertical Baseplate Orientation:
The is a horizontal 8-slot baseplate. Do not confuse it with vertical mounting baseplates (such as the P0926KE series). Ensure your cabinet layout and thermal ventilation match horizontal card slot orientation.
- ❗ Set Baseplate Address / ID Jumpers Correctly:
When adding a new to an existing fieldbus chain, verify the baseplate identification switches or position jumpers match your DCS software configuration (Equipment Control Blocks / System Manager).
- ⚠️ Maintain Fieldbus Termination & Cable Limits:
Ensure proper fieldbus terminators are installed at the physical end of the baseplate chain to prevent HDLC signal reflections and communication intermittent drops.
- ❗ Confirm RoHS Part Numbers ( vs. RH914XB):
is the standard hardware part number, and
RH914XBis Schneider Electric’s RoHS-compliant equivalent. Both share identical mechanical dimensions, mounting footprints, and backplane pinouts.
Frequently Asked Questions (FAQ)
Q: What is the main function of the Foxboro baseplate?
A: The is an 8-slot horizontal mounting baseplate that provides structural support, 24V DC power distribution, and 2 Mbps HDLC fieldbus signal routing for Foxboro 200 Series Fieldbus Modules (FBMs).
Q: What is the difference between part numbers and RH914XB?
A: “” is the standard Foxboro hardware part number, while “RH914XB” is Schneider Electric’s RoHS-compliant (lead-free) equivalent. They are 100% functionally and mechanically interchangeable.
Q: Can I install redundant FBM pairs on a baseplate?
A: Yes, the backplane supports both single FBM cards and redundant FBM card pairs (installed in adjacent odd/even slot positions).
Q: What warranty covers these pre-tested baseplate assemblies?
A: Every / baseplate sold includes a full 12-Month Functional Warranty. If the unit experiences hardware failure under normal operating parameters within 365 days, we provide an immediate unit replacement or full credit.
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