Detailed Product Description
This product is a DB9 to 9-pin terminal block CAN bus termination resistor adapter specially designed for CAN bus systems. It is used for signal impedance matching at both ends of the CAN bus network.
The module integrates a standard 120Ω termination resistor, which effectively eliminates signal reflections, reduces interference, and improves the stability and reliability of CAN bus communication.
By combining a DB9 connector interface with a 9-pin screw terminal block, the product enables quick and convenient field wiring while providing flexible cable routing and reliable electrical connections. It is an essential accessory for PLC systems, CAN nodes, industrial automation equipment, and fieldbus communication applications.
Design Purpose
● Eliminating Signal Reflection & Echoes
In high-speed CAN and CAN FD systems, high-frequencysignals create echo interference when encountering open wire ends, corrupting data packets. Prewiring the 1200 resistor precisely between pins 2 and 7 absorbs these waves, guaranteeing dataprotocol integrity.
● Replacing Inefficient Legacy Termination Methods
Traditional DB9 termination requires highlytedious soldering or prone-to-loose tiny screws. The screwless spring clamp design decreasesinstallation time by over 80% while fundamentally solving the risk of terminal screws looseningover time due to constant machinery vibrations
● Maximizing Pin Transparency and Versatility
While housing the 1200 CAN resistor internally, theladapter fully exposes all 9 pins to the external terminals. This gives field technicians absoluteflexibility, making the module equally handy for debugging other differential serial protocolslike RS-422 and RS-485.
specifications
| Interface & Conversion | It features a robust standard DB9 Female (D-Sub 9-pin) connector on one side and converts to a3-pin screw-less terminal block with spring clamps on the other, ensurins a clear, full 1-to-1 signal mapping |
| Built-in Precision Resistor | An integrated, high-precision 120 Ohm (120) matching resistor is permanently embeddedbetween Pin 2 (CAN_L) and Pin 7 (CAN_H) in strict adherence to IS0 11898-2 standards. |
| Tool-Free Quick Wiring | Utilizing intuitive push-button spring terminals, it allows operators to establish reliablebare-wire connections within seconds without the need for a soldering iron or even a screwdriver |
| Industrial-Grade Specs | Rated up to 30OV /2A (terminal side) with an impressive operating temperature envelope of -40C to l15° C, this module safely withstands constant vibrations and thermal extremes. |
Product Features
Core Application Scenarios
Product Drawing
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