IL2301-B900 Beckhoff
Wake Industrial LLC is not an authorized distributor of this product.
The Beckhoff IL2301-B900 is part of the IL Coupler Box Units series and features an Ethernet TCP/IP fieldbus interface with an RJ45 port. It offers 4 local digital inputs and 4 digital outputs, and supports up to 120 extension modules. The housing is made of polyamide with IP65/66/67 protection class, and uses M8 bolted I/O connectors.
Internal Product Review
The IL2301-B900 is a Beckhoff coupler box unit with an Ethernet TCP/IP fieldbus interface and an RJ45 fieldbus port. Support for up to 120 extension modules and IP65/66/67 protection makes this unit especially capable for distributed machine I/O. An M8 bolted I/O connector adds secure installation, and Fast ModbusTCP support is a strong advantage for responsive networked control.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The IL2301-B900 coupler box is manufactured by Beckhoff as part of the IL Coupler Box Units series. It functions as the Ethernet head station for a block of distributed I/O, transferring machine-level signals to higher-tier controllers without requiring a separate cabinet. This device provides a compact, on-machine alternative to traditional slice racks, allowing IP-rated electronics to be positioned wherever sensors and actuators are concentrated.
The field side communicates over Ethernet TCP/IP, and fast Modbus TCP telegrams are accepted through the integrated RJ45 port. Downstream, an IP-Link backplane runs at 2 Mbit/s, allowing expansion with up to 120 extension modules while preserving deterministic update times. Four local digital inputs capture proximity or limit-switch states, and their signals reach the controller through the same communication frame. Output wiring is handled by a single M8 bolted connector, which combines supply and signal contacts in a secure connection. The coupler can be mounted in any orientation because the internal logic is insensitive to its installation position. Two M3 threaded holes secure the enclosure directly to a machine frame.
A sealed enclosure made from PA6 polyamide surrounds the electronics, and a cast polyurethane potting compound fills internal voids to block moisture ingress. External metal parts are made from nickel-plated brass, while the spring contacts inside the connectors use gold-plated CuZn to minimize contact resistance. The enclosure carries an IP65/66/67 protection rating, guarding the circuitry against dust, water jets, and temporary immersion. The eight-point signal block includes four local digital outputs driven by high-side switches, providing direct control of solenoid valves or indicator lamps. The sealed housing supports installation near field devices where exposure to moisture and airborne contaminants is expected. Its compact form also reduces the length of individual sensor and actuator cable runs in distributed machine layouts.
