FOXBORO FBM222 P0926TL | Redundant PROFIBUS Communication Module

Description

The FOXBORO FBM222 P0926TL is a Redundant PROFIBUS Communication Module for Foxboro I/A Series and Foxboro Evo process control systems. It provides an interface between the DCS and PROFIBUS-DP/PA field devices such as motor drives, remote I/O, and field instruments.

The module supports two galvanically isolated PROFIBUS communication channels and can operate as a single module or as part of a redundant FBM222 pair. With repeaters, up to 125 PROFIBUS devices per port can be supported.

The original part number P0926TL has been superseded in newer product generations by the RH973LA FBM222, so compatibility should be checked carefully before using a newer module as a replacement.

 

📋 Product Datasheet

The dimensions, weight, power consumption, cable length, and communication specifications are based on Foxboro’s published FBM222 documentation.

 

⚙️ Main Functions

🌐 PROFIBUS-DP Interface — Connects PROFIBUS field devices to the Foxboro control system.

🔄 Redundant Communication — Supports redundant FBM222 configurations for improved availability.

🔌 Dual Isolated Channels — The two PROFIBUS channels are galvanically isolated.

📡 High Device Capacity — Supports up to 125 devices per port when repeaters are used.

🛡️ Fault-Tolerant Architecture — Supports redundant communication between the FBM222 and compatible fault-tolerant control processors.

🔧 Hot-Swappable Architecture — The FBM222 platform supports redundant/hot-swappable configurations when the complete system is designed for this function.

 

🛠️ Operating Instructions & How to Use

1. 🔍 Confirm the module is FBM222 P0926TL.
2. 🏷️ Check the hardware identification and revision.
3. 🧩 Confirm compatibility with the Foxboro I/A Series or Foxboro Evo system.
4. 🔧 Install the FBM222 on the appropriate modular baseplate.
5. 🔌 Connect the termination cable.
6. 🌐 Connect the PROFIBUS-DP network to the appropriate termination assembly.
7. ⚡ Verify the 24 VDC supply.
8. 🖥️ Configure the PROFIBUS devices through the appropriate Foxboro engineering environment.
9. 📡 Import or select the required device description/GSD information where applicable.
10. 🔄 Configure master/slave and communication parameters.
11. 🟢 Energize the module.
12. 🔍 Check the operational-status LEDs.
13. 📡 Check the communication activity LEDs for both PROFIBUS ports.
14. 🧪 Verify communication with each configured field device.
15. ✅ Confirm the DCS receives valid device data before returning the process to normal operation.

 

🔌 Power-On Sequence

⚠️ The FBM222 is part of a process-control communication architecture. Follow the site’s approved DCS maintenance and startup procedure.

1. 🛑 Place the process in a safe operating condition.
2. 🔧 Confirm the FBM222 is correctly seated.
3. 🔌 Verify the baseplate and termination connections.
4. 🌐 Check PROFIBUS cable polarity and shielding.
5. ⚡ Confirm the 24 VDC supply.
6. ⚡ Apply power to the FBM subsystem.
7. 🟢 Observe the module status LEDs.
8. 📡 Check communication activity on both channels.
9. 🖥️ Verify the module is recognized by the Foxboro control system.
10. 🔍 Check PROFIBUS slave diagnostics.
11. 🧪 Verify process values and device status.
12. ✅ Return the process to normal operation.

 

🔻 Power-Off / Shutdown Sequence

1. 🛑 Place the process in the approved shutdown state.
2. 🖥️ Stop or isolate the affected PROFIBUS control functions.
3. 📡 Confirm that connected devices are in their required safe state.
4. ⚡ Remove the module supply according to the DCS maintenance procedure.
5. 🔒 Apply lockout/tagout when required.
6. 🧤 Use ESD protection.
7. 🔧 Remove the module only after the appropriate isolation procedure is complete.
8. 📦 Place the FBM222 in antistatic packaging.

 

📖 Product Usage Notes

A typical application can be arranged as:

Foxboro DCS → Field Control Processor → FBM222 → PROFIBUS-DP Network → Drives / Remote I/O / Field Devices

The FBM222 communicates with PROFIBUS devices through its dedicated PROFIBUS channels. The physical PROFIBUS interface follows the RS-485-based PROFIBUS-DP architecture.

For a non-expanded PROFIBUS segment, the documentation specifies one master and up to 31 slaves. When repeaters are used, the FBM222 can support up to 125 devices per port.

The communication channels are galvanically isolated, which helps separate the PROFIBUS network interfaces from the module’s other circuitry.

🔧 Important Configuration Checks

🔹 FBM222 hardware version

🔹 P0926TL part number

🔹 Foxboro system generation

🔹 PROFIBUS master configuration

🔹 Slave addresses

🔹 GSD/device descriptions

🔹 PROFIBUS baud rate

🔹 Bus termination

🔹 Cable length

🔹 Network topology

🔹 Redundancy arrangement

🔹 Termination assembly type

 

🧪 Inspection Before Installation

🔎 Check the P0926TL identification.

🔎 Inspect the module housing.

🔎 Check both PROFIBUS communication ports.

🔎 Inspect the baseplate connector.

🔎 Check for bent or damaged contacts.

🔎 Inspect the PCB for corrosion.

🔎 Check for overheating marks.

🔎 Verify the hardware revision.

🔎 Check the termination assembly and cable.

🔎 Compare the replacement module with the original before installation.

 

❓ Common Questions & Answers

Q: What is FOXBORO FBM222 P0926TL?
A: It is a Redundant PROFIBUS Communication Module used with Foxboro I/A Series and Foxboro Evo systems.

Q: What protocol does FBM222 use?
A: It is designed for PROFIBUS-DP/PA communication.

Q: How many PROFIBUS ports does it have?
A: It provides two galvanically isolated PROFIBUS communication channels.

Q: What is the communication speed?
A: The documented selectable data rate is 9.6 to 12,000 kbit/s.

Q: How many devices can one FBM222 support?
A: A non-expanded segment supports up to 31 slave devices. With repeaters, the module can support up to 125 devices per port.

Q: What power supply does P0926TL require?
A: The documented input is 24 VDC with +5% / -10% tolerance.

Q: What is the power consumption?
A: The P0926TL version is specified at approximately 6 W.

Q: Is FBM222 an I/O module?
A: No. It is primarily a PROFIBUS communication interface module connecting fieldbus devices to the Foxboro DCS.

Q: Is P0926TL still a current part number?
A: P0926TL is a legacy FBM222 part number. Foxboro documentation identifies newer RH973LA as a replacement for P0926TL in newer product generations.

Q: Can RH973LA directly replace P0926TL?
A: It may be a replacement option, but the complete system configuration must be checked. The newer RH973LA has a maximum power consumption of 6.5 W, compared with approximately 6 W for P0926TL.

Q: Can FBM222 operate redundantly?
A: Yes. Two FBM222 modules can be configured as a redundant pair, with the system identifying the modules as Master and Tracker.

Q: Does FBM222 support hot swapping?
A: The Foxboro architecture supports hot-swappable redundant FBM configurations when the system is designed and configured for that function. Follow the installed system’s maintenance procedure.

Q: What should I check before purchasing a replacement?
A: Confirm FBM222, P0926TL, hardware revision, baseplate compatibility, termination assembly, PROFIBUS configuration, and the existing Foxboro DCS version.

 

⭐ Recommended FOXBORO Series / Models

1. FOXBORO FBM222 P0926TL — Redundant PROFIBUS Communication Module
2. FOXBORO FBM222 RH973LA — Newer FBM222 Redundant PROFIBUS Module
3. FOXBORO FBM223 — PROFIBUS Communication Module
4. FOXBORO FBM228 — FBM Redundant Adapter
5. FOXBORO P0922RK — FBM228/FBM222 Redundant Adapter
6. FOXBORO P0926XM — FBM222 Redundant Adapter, Dual Network
7. FOXBORO P0926TH — FBM222 Termination Assembly
8. FOXBORO P0926TJ — FBM222 Termination Assembly
9. FOXBORO FBM231 — PROFIBUS Communication Interface
10. FOXBORO FBM232 — PROFIBUS Communication Interface

⚠️ These models belong to related Foxboro communication and fieldbus architectures. They should not be treated as universal drop-in replacements for FBM222 P0926TL.

 

📦 Storage & Handling

📦 Keep the module in antistatic packaging when not installed.

🛡️ Use ESD protection during handling.

💧 Keep the module away from moisture and condensation.

🌡️ Store in a clean, temperature-controlled environment.

🔌 Protect the PROFIBUS connectors from dust and mechanical damage.

🏷️ Preserve the original model and revision labels.

📋 For spare-parts inventory, record the complete designation as FOXBORO FBM222 P0926TL.

Recommended Short Listing Title

FOXBORO FBM222 P0926TL | Redundant PROFIBUS Communication Module

★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
One year warranty, special discount after sale
The company focuses on DCS, PLC, robot, large servo four systems
The main products are all kinds of module/card, controller, touch screen, servo drive
The company's advantages: the supply of imported original products, professional production of accessories
Fast delivery time, complete supply, The seller has more than $1526000 worth of industrial control products inventory
We Can transport to the world！！！
——————————————————————————————————————
[service contact information]
Purchase and consultation hotline: +8613365909307 (Whatsapp/ Wechat)
E-mail: dcsplcsales@gmail.com
Contact Person: Simon
① 24-hour email reply (12 hours);
② For shipment to countries outside Asia, please contact the seller.
Main brands include: ABB, Bailey, GE, FOXBORO, Invensys TRICONEX, Bentley BENTLY, A-B Rockwell, EMERSON EMERSON, B&R, MOTOROLA, FUANC, REXROTH, KUKA, HONEYWELL, NI, DEIF, Yokogawa, WOODWARD WOODWARD, Ryan, SCHNEIDER SCHNEIDER, Yaskawa, MOOG, EPRO, PROSOFT and other major brands
Related Products：