Description
Toshiba PF612 | PROSEC T-Series PROFIBUS-DP Master Module Specs
Architect’s Product Breakdown
The Toshiba PF612 serves as a dedicated PROFIBUS-DP Master communication interface module designed for the PROSEC T-Series (specifically T3 and T3H) programmable logic controller architecture. Engineered to integrate Toshiba high-end controllers into open, multi-vendor fieldbus topologies, this hardware model manages high-speed cyclical I/O data exchange between the host CPU and remote PROFIBUS field devices such as variable frequency drives, remote I/O blocks, and smart instrumentation.
Occupying an expansion rack slot in a PROSEC T3/T3H backplane, the model features an integrated 32-bit microprocessor that handles the PROFIBUS-DP protocol stack locally, offloading complex network processing tasks from the primary PLC CPU. The module features an isolated RS-485 serial interface via a standard 9-pin Sub-D connector, supporting data transmission rates from 9.6 kbps up to 12 Mbps. When configuring or replacing this card, automation engineers use Toshiba’s T-Series engineering software (such as T-RAG) alongside standard GSD configuration files to map remote I/O addresses directly into the PLC memory registers.
PF612
Key Technical Specifications
- Manufacturer: Toshiba Corporation / Industrial Automation
- Product Category: PLC Fieldbus Communication Module
- Part Number / Catalog No.: PF612 (PROSEC T-Series PROFIBUS Master)
- Compatible PLC Series: PROSEC T3, T3H, and S3 Controller Platforms
- Protocol Support: PROFIBUS-DP (EN 50170 / IEC 61158) Master Class 1
- Transmission Speed: Auto-detectable / Configurable from 9.6 kbps up to 12 Mbps
- Network Node Capacity: Supports up to 125 PROFIBUS Slave Devices per segment
- Physical Interface: Isolated 9-pin DB-9 Female (RS-485) PROFIBUS port
- Data Volume: Up to 244 bytes of input data and 244 bytes of output data per slave device
- Internal Power Consumption: 5 VDC supplied via PLC rack backplane (Approx. 0.6 A)
- Operating Temperature Range: 0°C to +55°C
- Weight: Approximately 0.40 kg (0.88 lb)
Field Engineer’s Pitfall Guide (Unique Value)
- Hot-Swapping Under Power: Never insert or remove the PF612 module while the PROSEC rack power supply is energized. Removing or seating the card live can cause voltage spikes across the backplane logic bus, risking permanent damage to the card’s internal transceivers and the host CPU memory.
- Profibus Network Line Termination: Operating a high-speed (up to 12 Mbps) PROFIBUS loop without active termination resistors switched ON at both physical ends of the segment will cause severe signal reflection. This leads to intermittent cyclic data errors, field bus timeouts, and missing slave node alarms.
- GSD File Mismatch: When replacing or adding slave devices to the PF612 network configuration, using an incorrect or outdated GSD file version in the T-Series configuration tool will result in bus configuration mismatch faults and prevent the master from entering cyclic data exchange mode.
QA & Testing SOP (Transparency)
- Visual & Origin Verification: Units undergo microscopic examination to confirm clean gold-finger backplane edge contacts, undamaged DB-9 pin housings, intact circuit board traces, and authentic OEM labeling.
- Live Test Bench Environment: Modules are installed into a dedicated Toshiba PROSEC T3 test rack supplied with regulated power to verify module boot-up sequence, onboard CPU health, and diagnostic LED indicators (RUN, ERR, BF, DIA).
- PROFIBUS Data Exchange Sweep: Technicians connect the DB-9 interface to an active PROFIBUS-DP test network with multiple slave nodes, verifying 12 Mbps auto-baud detection, error-free cyclic data polling, and memory mapping stability.
- Anti-Static Packaging: Post-testing units are fitted with protective connector covers, sealed inside conductive ESD shielding bags, and securely cushioned with high-density foam packaging for safe transport.
Technical FAQ
Can I hot-swap the Toshiba PF612 module while the PLC chassis is energized?
No. Standard PROSEC T-Series backplanes do not support live hot-swapping. Always disconnect power to the rack before installing or removing the module.
What maximum baud rate does this model support on a PROFIBUS network?
The model supports standard PROFIBUS-DP transmission speeds up to 12 Mbps, with automatic baud rate detection supported on the segment.
Which software is used to configure the PROFIBUS network map on the PF612?
Network mapping, slave GSD file imports, and I/O address allocations are configured using Toshiba’s PROSEC programming and configuration software suite (such as T-RAG / T-DS).
What is the standard warranty status for surplus inventory units?
Verified surplus or factory-sealed Toshiba PLC modules typically carry a 12-month operational warranty covering material and manufacturing defects under standard operating conditions.
