IP4112-B518 Beckhoff
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The Beckhoff IP4112-B518 is part of the IP Compact Box Units series and features 4 channels with a default resolution of 15 bits, supporting a maximum resolution of 16 bits. It offers a fieldbus interface via CANopen, an output range of 0 to 20 mA, and is equipped with M8 and M12 screw-in connectors for bus and output connections.
Internal Product Review
The Beckhoff IP4112-B518 is a compact box analog output module for CANopen networks with 4 channels. A 0 to 20 mA output range and 16-bit maximum resolution give this unit excellent control accuracy for distributed automation tasks. Conversion time under 4 ms makes this module a strong choice for responsive analog output performance.
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Product Description:
The IP4112-B518 is an analog output box from Beckhoff in the IP Compact Box Units series. Mounted directly on the machine frame, it converts controller setpoints into analog current signals for devices such as proportional valves or I/P transducers. This arrangement supports distributed automation on a CANopen network while keeping the signal interface close to the field device. Placing the module near the actuator can also reduce long analog cable runs and simplify wiring on the machine.
The module refreshes its outputs in less than 4 ms, which supports fast response across all channels. Each channel supplies a current range of 0 to 20 mA for compatible field devices. The connected load must stay below 500 Ω, and the unit reports an error when that limit is exceeded. Its maximum conversion depth is 16-bit, and the box uses a four-channel configuration for straightforward channel addressing on the CANopen bus. The actuator side is powered from the load-voltage rail, while the output drivers use a separate control-voltage rail.
In the controller, the process image is mapped as 4 × 16 bits for the analog output data. An optional 4 × 8-bit status block can be added for channel-specific alarms and operating states. The fieldbus connection uses an Integrated Tee-Connector, and the power supply enters through an M8 4-pin plug. Downline expansion is handled through an M8 4-pin socket, which allows bus and power distribution without extra terminal blocks. Diagnostic words travel on the same network as process data, and CANopen node guarding can monitor module status in real time. Internal scaling keeps the numeric output values consistent when the controller uses higher precision data.
