Description
Product Introduction
The Foxboro P0916BX (RoHS designation RH916BX) is a high-density 16-position horizontal mounting baseplate designed for the Foxboro 200 Series subsystem. Engineered to maximize cabinet space and centralize field I/O connections, the P0916BX serves as the physical and electrical backbone for housing up to sixteen 200 Series Fieldbus Modules (FBMs) or Fieldbus Communications Modules (FCMs).
Constructed with integrated dual power distribution rails and dual HDLC fieldbus communication channels (Bus A and Bus B), the P0916BX delivers fault-tolerant operation for high-channel-density DCS cabinets. Integrated multi-pin cable connectors on the baseplate allow direct interface to Termination Assemblies (TAs) in marshalling bays via pre-fabricated cables, minimizing cabinet wiring footprint and reducing installation time.
Key Technical Specifications
| Parameter | Value |
| Manufacturer | Foxboro (Invensys / Schneider Electric) |
| Part Number | P0916BX (RoHS Equivalent: RH916BX) |
| Series | Foxboro 200 Series Subsystem |
| Slot Capacity | 16 Module Positions (Supports single modules or redundant FBM pairs) |
| Mounting Orientation | Horizontal Mounting (19-inch rack or enclosure panel) |
| Communication Bus | Dual Redundant 2 Mbps HDLC Fieldbus (Bus A & Bus B) |
| Power Distribution | Redundant 24V DC backplane power rails via FPS power module connections |
| Field Wiring Interface | Multi-pin connector receptacles for pre-fabricated cables 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 01:45 AM during a critical cabinet consolidation at a chemical processing plant. Space inside the existing remote instrument enclosure was at a premium, and adding multiple 8-slot baseplates would have required an additional bay. The instrument team installed a single 16-slot P0916BX horizontal baseplate instead. Slotting in sixteen mixed AI, AO, and Discrete FBM200-series modules immediately brought all field loops online across the dual HDLC bus backplane—doubling loop density within the exact same rack footprint without adding thermal clutter.
Target Application Scenarios
- High-Density Cabinet Footprints: Maximizes slot density in restricted enclosures where mounting space per cabinet rail is limited.
- Redundant I/O Pair Organization: Houses up to 8 redundant FBM pairs (occupying adjacent odd/even slot positions) across a single unified backplane.
- Centralized Marshalling Integration: Connects directly to external DIN-rail terminal strips using factory-shielded point-to-point cables, streamlining maintenance and loop testing.
P0916BX
P0916BX
Transparency SOP: Quality Assurance & Testing
Every P0916BX baseplate undergoes a strict 5-stage workbench validation process prior to dispatch:
- Inbound Visual & Mechanical Inspection: High-magnification inspection of all 16 backplane slot pin arrays, PCB traces, card guide latches, and cable connector shrouds for pin deflection or wear.
- Backplane Electrical Isolation & Continuity: Automated point-to-point pin checks across all 24V DC power rails, ground planes, and HDLC signal tracks to rule out micro-shorts.
- Live Redundant Loop & Bus Communication Test: Mounted on a test stand connected to an FCP280 controller and populated across all 16 slots with test FBMs to verify clean module indexing and data routing.
- Fieldbus Redundancy Signal Test: High data loads are driven across all 16 slots while toggling Bus A and Bus B channels to ensure zero packet loss or signal degradation.
- Anti-Static ESD Packaging: Cleared baseplates are contact-cleaned, thoroughly dried, and sealed in heavy-duty anti-static ESD shielding bags prior to custom packaging.
The Veteran’s Tech Trap Guide
- ⚠️ Confirm Cabinet Width & Cable Clearance:
The is a full 16-slot horizontal baseplate. Verify that your cabinet rail width and side wireways accommodate the extended width and cable bend radiuses for the multi-pin TA connections.
- ❗ Verify Baseplate Identification Jumpers:
When adding a to an existing fieldbus chain, configure the baseplate position switches or jumpers correctly to match the hardware addressing in Foxboro Control Software (ICC / System Manager).
- ⚠️ Ensure Proper End-of-Line Fieldbus Termination:
Install appropriate fieldbus terminators at the physical end of the baseplate fieldbus chain to avoid HDLC signal reflections and communication intermittent drops.
- ❗ Check RoHS Part Numbers ( vs. RH916BX):
is the standard Foxboro hardware part number, whileRH916BXis Schneider Electric’s RoHS-compliant equivalent. Both share identical dimensions, mounting hole patterns, and electrical characteristics.
Frequently Asked Questions (FAQ)
Q: What is the main function of the Foxboro baseplate?
A: The is a 16-slot horizontal baseplate that provides mounting, 24V DC redundant power distribution, and 2 Mbps HDLC fieldbus communication for up to sixteen Foxboro 200 Series Fieldbus Modules (FBMs).
Q: What is the difference between part numbers and RH916BX?
A: “” is the standard Foxboro hardware part number, while “RH916BX” is Schneider Electric’s RoHS-compliant (lead-free) equivalent. They are 100% functionally and mechanically interchangeable.
Q: How does the compare to the P0914XB baseplate?
A: The provides 16 module slots in a single horizontal assembly, whereas the P0914XB provides 8 module slots. Both use the same 200 Series architecture and fieldbus protocol.
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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