Beckhoff KL4438 Bus Terminal analog output

The KL4438 is an eight-channel analog output terminal from the Beckhoff Bus Terminal series (KL series) for the traditional K-Bus I/O system, featuring integrated diagnostics. It outputs bipolar ±10 V voltage signals to control drives, servo controllers, proportional valves, and other devices that require a signed analog setpoint, while providing diagnostic feedback on output status. It belongs to the KL4xxx analog output family and is the 8-channel member of the bipolar diagnostic output family, alongside the KL4434. Unlike EtherCAT terminals (EL series), the KL series communicates via the K-Bus and is typically used with Beckhoff Bus Couplers or Bus Terminal Controllers.