Overview
The Datalink DL-PC/104 (hardware version 1-203, KFRB_2.51/4.30 flash FL18_2.50) is a legacy PC/104-based interface module designed to enable industrial PCs, MMIs, and SCADA systems to access Allen-Bradley Data Highway Plus (DH+) and Remote I/O networks. Manufactured by Equustek (formerly Datalink Technologies), this card provides a plug-and-play solution for embedded industrial computing environments requiring cost-effective communication with Allen-Bradley PLCs and SLC controllers.
Key Features
- PC/104 stackable bus connector—allows multiple cards to be stacked for expanded I/O in compact systems
- Data Highway Plus (DH+) and Remote I/O (RI/O) support with configurable baud rates (57.6K, 115.2K, 230.4K)
- Uses standard Allen-Bradley DF1 serial drivers—compatible with legacy control software
- Windows-based configuration program—easy setup over the bus or via external RS-232
- Support for 1–7 virtual adapter racks with up to 16 Block Transfer reads/writes per rack
- Compact form factor—ideal for space-constrained panel and embedded applications
Technical Specifications
The Datalink DL-PC/104 delivers reliable performance in legacy industrial systems:
- Bus Standard: PC/104 (self-stacking, 90 × 96 mm form factor)
- Dimensions: 3.550″ × 3.775″ (90.17 × 95.89 mm)
- Weight: 0.2 lbs (0.086 kg)
- Operating Temperature: 32°F to 122°F (0°C to 50°C)
- Storage Temperature: −40°F to 185°F (−40°C to 85°C)
- Data Highway Plus Speeds: 57.6K, 115.2K, 230.4K baud (configurable)
- Remote I/O Speeds: 57.6K, 115.2K, 230.4K baud
- Throughput per RI/O Rack: 128 bits
- Hardware Revision: HW 1-203 KFRB_2.51/4.30
- Flash Version: FL18_2.50
Typical Applications
- Industrial MMI (Man-Machine Interface) and HMI systems requiring legacy Allen-Bradley network access
- SCADA systems integrating with Data Highway Plus networks
- Embedded PC-based remote I/O controllers in manufacturing and process automation
- Retrofits and upgrades to modernize data acquisition from PLC-5 and SLC-500 systems
- OEM applications using compact PC/104 stack configurations
Compatibility & Replacements
Compatible With
- Allen-Bradley PLC-5 controllers
- Allen-Bradley SLC 500 controllers
- Data Highway Plus (DH+) networks
- Remote I/O (RI/O) systems
- PC/104 embedded computers and stackable PC/104 boards
- Windows 95, Windows NT, and compatible legacy operating systems
- DF1 serial communication protocol
Replaces / Drop-In Replacement For
- Allen-Bradley 1784-PKTX (higher-cost alternative)
- SST 5136-SD-104
- Legacy OEM DH+ communication cards in embedded PC/104 systems
Works With
- Allen-Bradley DF1 Com Port drivers (standard 1770-KF2 support)
- PLC-5 series ladder logic software (version 4.4 and compatible releases)
- CTC P1/P2 PowerStation systems
- Windows-based SCADA and HMI software supporting serial DF1 communication
- Data Highway Plus network protocols
