Description
Core Product Summary
The Woodhead DRL-DPM-BKF (manufactured under the Molex Brad industrial automation lineup) is a single-channel PROFIBUS DP network interface card designed in the stackable PC/104 embedded form factor. The module enables embedded industrial computers and field processing units to operate as a high-speed PROFIBUS DP Master or Slave controller.
Featuring auto-detecting baud rates from 9.6 kbps up to 12 Mbps, the module manages real-time process data exchange across fieldbus segments without placing heavy communication processing overhead on the host CPU. Operating power (+5 VDC) is drawn directly from the host backplane through the stackable PC/104 bus headers, simplifying panel layout in space-constrained embedded automation setups.
Key Technical Specifications
| Parameter | Specification |
| Brand / Manufacturer | Woodhead / Molex (Brad Communications) |
| Model / Part Number | DRL-DPM-BKF (Engineering / Material Part 名列前茅120130008) |
| Form Factor | PC/104 stackable embedded bus format |
| Product Type | PROFIBUS Network Interface Card / Fieldbus Scanner |
| Channels | 1 PROFIBUS DP channel |
| Supported Protocols | PROFIBUS DP Master (Class 1/Class 2), DP Slave, and FDL Layer 2 |
| Baud Rate Support | 9.6 kbps to 12 Mbps (auto-sensing) |
| Power Requirements | +5 VDC (supplied directly via the PC/104 stack bus) |
| Operating Temperature | 0°C to +60°C |
| Relative Humidity | 5% to 95% (non-condensing) |
| Physical Dimensions | Standard PC/104 footprint (approx. 90 mm × 96 mm) |
Detailed Product Overview
The Woodhead DRL-DPM-BKF module bridges embedded PC computing with real-time fieldbus infrastructure. Built around the standard PC/104 architecture, it integrates into stackable embedded computers, motion controllers, and dedicated industrial gateways where space limitations rule out full-size PCI or PCIe extension cards.
Operating as a PROFIBUS master or slave node, the card offloads time-critical protocol handling and cyclic I/O polling from the host operating system. This hardware-level execution maintains deterministic data cycles across connected remote I/O blocks, motor drives, and field instrumentation. Onboard memory buffers store active process images, ensuring smooth data transfer between the fieldbus network and the host application runtime.
Because the card is integrated via the PC/104 stack, system designs require no external power cables for the interface board itself. Communication status and operational state are monitored through onboard LEDs, assisting system builders during commissioning and diagnostic routines.
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
| Host Bus Architecture | PC/104 Stackable Bus | Mounts directly onto compatible PC/104 CPU or expansion stacks. |
| Power Distribution | +5 VDC via PC/104 Bus Pins | No external power supply wiring is needed. |
| Network Interface | Standard RS-485 / PROFIBUS Cabling | Requires standard 9-pin Sub-D connector/header break-out for field line access. |
| Driver / Software Stack | Direct-Link / Brad Console Software Drivers | Host application requires matching DLL and driver binaries compatible with the card firmware. |
DRL-DPM-BKF
DRL-DPM-BKF
Dimensions, Mounting & Connection Notes
- Physical Footprint: Fits the standard PC/104 form factor, measuring approximately 90 mm × 96 mm.
- Mounting Method: Stacked mechanically onto a PC/104 computer board using standard corner standoffs and bus header pin alignment.
- No Hot-Swapping: The PC/104 bus does not support live insertion. Power down the host system completely before adding or removing the module.
- ESD Handling: Use standard anti-static procedures (grounding wrist straps) when installing or handling uncontained PC/104 circuit boards to prevent electrostatic damage to onboard components.
FAQ
What is the function of the Woodhead DRL-DPM-BKF card?
The Woodhead DRL-DPM-BKF is a PC/104 interface card that provides a single PROFIBUS DP communication port for embedded industrial computers.
What bus form factor does the DRL-DPM-BKF use?
It uses the stackable PC/104 embedded bus format, mounting directly onto compatible PC/104 CPU stacks.
Does the DRL-DPM-BKF require an external power supply?
No. It receives its operating power (+5 VDC) directly from the host system via the PC/104 bus header pins.
What transmission speeds are supported on the PROFIBUS port?
The card supports PROFIBUS DP transmission speeds from 9.6 kbps up to 12 Mbps.
Can the DRL-DPM-BKF be installed while the host system is powered on?
No. The PC/104 bus architecture is not hot-swappable; the entire embedded system must be powered off before module installation or removal.
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