SST SST-PFB-CLX PROFIBUS Scanner Module | Replacement, Equivalent & Selection Guide
The SST-PFB-CLX is a PROFIBUS DP master/slave scanner module designed for use in Rockwell Automation Allen-Bradley ControlLogix chassis. It enables seamless integration of PROFIBUS DP field devices — including drives, I/O blocks, sensors, and actuators — into a ControlLogix-based control system. This page serves as a comprehensive selection, replacement, and compatibility reference for engineers and procurement teams.
Technical Specifications
- Part Number: SST-PFB-CLX
- Manufacturer: SST (Woodhead / Molex)
- Form Factor: ControlLogix backplane module (1756 chassis compatible)
- Protocol: PROFIBUS DP (EN 50170 / IEC 61158)
- Operating Mode: DP Master (Class 1) and DP Slave
- Max Slave Nodes: Up to 125 PROFIBUS DP slaves
- Baud Rate: 9.6 kbps – 12 Mbps (auto-detect)
- Backplane Interface: Allen-Bradley ControlLogix 1756 series
- Configuration Software: SST Network Configuration Tool (NCT)
- Power Consumption: Supplied via ControlLogix backplane
- Operating Temperature: 0°C to 60°C
- Certifications: CE, UL listed
- Weight: Approx. 200 g
Compatible Replacement & Equivalent Models
The following modules are functionally equivalent or drop-in replacements for the SST-PFB-CLX in ControlLogix PROFIBUS applications. Always verify firmware compatibility and GSD file support before substitution.
- 1756-PROFIBUS (Rockwell / Allen-Bradley) — Native Rockwell PROFIBUS DP master for 1756 chassis; direct functional equivalent with Studio 5000 integration.
- SST-PFB-CLX-2 — Enhanced revision of the SST-PFB-CLX with dual-port PROFIBUS support; backward compatible.
- Hilscher CIFX 50-PB — PC-based PROFIBUS master card; suitable for gateway or PC-based control architectures.
- ProSoft Technology MVI56-PDPMV1 — ControlLogix PROFIBUS DPV1 master module; supports acyclic messaging and extended diagnostics.
- ProSoft Technology MVI56E-PDPMV1 — Enhanced version with EtherNet/IP configuration port; recommended for new designs.
- Anybus X-gateway PROFIBUS DP — Protocol gateway for bridging PROFIBUS DP to EtherNet/IP or other networks; suitable for migration projects.
Why Choose the Original SST-PFB-CLX
- Proven field reliability — Widely deployed in automotive, oil & gas, and process industries for over a decade.
- Native ControlLogix integration — Occupies a standard 1756 slot; no external power supply or gateway required.
- Dual master/slave capability — Supports both DP Master Class 1 and DP Slave modes in a single module.
- Broad GSD compatibility — Compatible with virtually all PROFIBUS DP slave GSD files.
- Established support ecosystem — Extensive documentation, AOI libraries, and community knowledge base available.
- Cost-effective legacy support — Ideal for maintaining existing PROFIBUS networks without full system migration.
Typical Applications
- Connecting PROFIBUS DP drives (Siemens SINAMICS, ABB ACS, Danfoss VLT) to ControlLogix PLCs
- Integrating distributed I/O blocks (ET 200S, ET 200M, Wago 750) into Allen-Bradley systems
- Automotive body shop and paint line automation with mixed-vendor field devices
- Process plant DCS migration projects retaining existing PROFIBUS field instrumentation
- Water/wastewater SCADA systems with PROFIBUS-enabled sensors and actuators
- Machine tool and packaging line control with high-speed PROFIBUS DP networks
System Compatibility
- PLC Platform: Allen-Bradley ControlLogix 1756 series (all generations)
- Chassis: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17 and ControlLogix-XT variants
- Power Supplies: 1756-PA72, 1756-PB72, and compatible 1756 series PSUs
- Programming Software: RSLogix 5000 / Studio 5000 Logix Designer (all versions)
- Configuration Tool: SST Network Configuration Tool (NCT) v3.x and above
- PROFIBUS Standard: EN 50170, IEC 61158 Type 3, IEC 61784 CPF 3
- Not compatible with: CompactLogix, MicroLogix, or SoftLogix platforms (use ProSoft MVI46/MVI69 series for those)
Selection Guide
Use the criteria below to determine whether the SST-PFB-CLX or an alternative is the best fit for your application:
- Existing ControlLogix system + PROFIBUS DP network: SST-PFB-CLX or 1756-PROFIBUS — direct slot-in replacement.
- Need DPV1 acyclic messaging (e.g., parameter access to drives): ProSoft MVI56-PDPMV1 or MVI56E-PDPMV1 recommended.
- New system design (post-2020): Consider 1756-PROFIBUS for native Rockwell support and Studio 5000 integration.
- Migration from PROFIBUS to EtherNet/IP: Anybus X-gateway or ProSoft PLX51-PBM for transparent protocol conversion.
- CompactLogix platform: ProSoft MVI69-PDPMV1 is the correct selection — SST-PFB-CLX is not compatible.
- Budget-sensitive legacy maintenance: Refurbished or surplus SST-PFB-CLX units from verified distributors (such as Konmask.com) offer the most cost-effective path.
Quality Assurance & Sourcing
All SST-PFB-CLX modules supplied by Konmask.com undergo the following quality process:
- Visual inspection for physical damage, corrosion, and counterfeit indicators
- Firmware version verification against SST/Molex official release records
- Functional power-on test with PROFIBUS DP loopback verification
- Anti-static packaging with humidity indicator cards for safe transit
- Traceability documentation available upon request (batch records, test reports)
- 90-day warranty on all units; extended warranty available for volume orders
How to Order
- Part Number: SST-PFB-CLX
- Minimum Order Quantity: 1 unit
- Lead Time: In-stock units ship within 1–3 business days; contact us for volume availability
- Payment: T/T (bank transfer), PayPal, credit card via secure checkout
- Shipping: DHL / FedEx / UPS express worldwide; sea freight available for bulk orders
- RFQ / Bulk Pricing: Email support@konmask.com with quantity and delivery requirements
- Phone / WhatsApp: +0086 19859288691
Replacement & Compatibility FAQ
Q: Can the SST-PFB-CLX replace a 1756-PROFIBUS module directly?
A: Functionally yes — both are ControlLogix PROFIBUS DP masters. However, the configuration tools differ (SST NCT vs. Studio 5000 Add-On Profile), so GSD files and network configuration must be re-imported.
Q: Is the SST-PFB-CLX compatible with ControlLogix V31 / V33 firmware?
A: SST-PFB-CLX is compatible with ControlLogix chassis running firmware V16 through V33. Verify the specific SST firmware revision against the SST compatibility matrix for your chassis firmware version.
Q: Can I use the SST-PFB-CLX as a PROFIBUS slave?
A: Yes. The module supports both DP Master Class 1 and DP Slave modes, configurable via the SST NCT software.
Q: What is the maximum cable length for PROFIBUS DP with this module?
A: At 1.5 Mbps, maximum segment length is 200 m. At 93.75 kbps, up to 1200 m per segment. Use repeaters to extend beyond one segment.
Q: Do you supply the SST Network Configuration Tool (NCT) software?
A: The NCT software is available as a free download from the Molex/SST website. We can assist with sourcing legacy versions if required — contact us.
Q: What warranty do you offer on surplus/refurbished units?
A: All units carry a 90-day functional warranty. Extended 12-month warranty is available for qualified volume orders.
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Contact: support@konmask.com | +0086 19859288691
