The I/O modules in the MX-System offer a wide choice for all signal types and directions. The MO3004-2255-1112 can be used with four analog channels, two of which can be operated as switchable inputs or outputs, for signals with °¿10?V (also 0...10?V) and °¿20?mA (also 4...20?mA). This enable several measuring tasks to be executed at the same time. The signal state is shown on the display; the signal interface is established via screw-type M12 connectors. ? Various diagnostic options are also available for each channel. The short-circuit proof 24?V?DC sensor/actuator supply for the M12 connectors has electronic protection.