Peripheral ConnectionsIP20 compact I/O modules (6.7x3.2x1.2 in.) handle rotational encoder evaluation, gate measurement, event counters or pulse-width modulation. Distributed I/O signals, ranging from digital inputs to SSI encoders, collect and transfer discrete signals to the controller over a fieldbus and are supplemented with temperature inputs, strain gauge evaluation or resistance measurement. Modules include CAN I/O interfaces or X2X Link.