Bus Terminal is compatible with current and future fieldbus technologies, including Ethernet, Profibus-DP/FMS, DeviceNet, InterBus, Lightbus, CANopen, CAN CAL, Modbus, ControlNet, RS232/422/485, and Sercos. System has modular electronic terminal blocks with 1, 2, or 4 channels per unit. It allows users to mix various I/O types, including ac, dc, digital, analog, relay, t/c, counter, encoder, and serial interfaces. Four-wire terminating system connects sensors and actuators directly, eliminating need to wire I/O signals locally. Up to 64 blocks connect to bus coupler, which then links to fieldbus.