SST-PFB3-VME-2
Product Name
ProSoft Technology SST-PFB3-VME-2 VMEbus Profibus DP Master/Slave Communication Module(The naming follows ProSoft’s industrial communication module conventions:
- “SST”: Denotes ProSoft’s legacy “SST” product line, specialized in industrial fieldbus interfaces.
- “PFB3”: Identifies the “Profibus FB3” series, optimized for Profibus DP protocol communication.
- “VME-2”: Specifies compatibility with the VMEbus standard (VME64 compliant) and 2-slot form factor integration.
- “VMEbus Profibus DP Master/Slave Communication Module”: Highlights its core function—acting as a bidirectional bridge between VMEbus-based controllers (e.g., industrial PCs, PLCs) and Profibus DP field devices, supporting both master and slave operating modes.
This module serves as the “system-fieldbus gateway” in industrial automation, resolving compatibility gaps between legacy VME systems and modern Profibus DP sensor/actuator networks.)
2. Product Description
The SST-PFB3-VME-2 is an industrial-grade communication module engineered by ProSoft Technology for seamless integration of VMEbus control systems into Profibus DP networks. It addresses critical challenges in industrial connectivity: legacy system modernization, multi-device network coordination, and high-speed data transmission—by integrating dual Profibus DP interfaces, VME64 bus compliance, and flexible master/slave operation—making it indispensable for:
- Power Generation: Connecting VME-based turbine controllers to Profibus DP pressure/temperature sensors in gas-fired power plants, enabling real-time equipment health monitoring.

- Manufacturing Automation: Linking VMEbus PLCs to Profibus DP variable-speed drives (VSDs) and robotic arms in automotive assembly lines, synchronizing production workflows.
- Oil & Gas: Integrating VME-based pipeline control systems with Profibus DP flow meters and valve actuators, ensuring precise fluid flow regulation.
- Railway Signaling: Connecting VMEbus safety controllers to Profibus DP trackside sensors, supporting low-latency train position detection.
Key Functional Advantages
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Dual Profibus DP Interfaces with Master/Slave FlexibilityEquipped with 2 independent Profibus DP ports (RS-485, DB9 connectors) supporting both Master Class 1/2 and Slave modes—configurable via software. As a master, it can poll up to 126 Profibus DP slave devices; as a slave, it enables VME systems to be controlled by external Profibus masters . This duality eliminates the need for separate master/slave modules, reducing system complexity by 60% in mixed-network environments.
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High-Speed Data Transmission & VMEbus IntegrationSupports Profibus DP transmission rates from 9.6 kbps to 12 Mbps, adapting to both low-latency (12 Mbps for real-time control) and long-distance (9.6 kbps for 1200m cable runs) applications . Compliant with the VME64 standard, it operates on 32-bit VMEbus with A16/A24/A32 address space support, enabling direct memory access (DMA) with VME controllers for 480 bytes of input/output data per interface . A dual-port RAM interface further ensures seamless integration with Windows, Linux, and real-time operating systems (RTOS) .


