A compact converter that allows communications between RS-232C/USB and RS-422/485 devices. Ideal for industrial applications. • Allows communications between RS-232C/USB (Universal Serial Bus) and RS-422/485 devices. • Applicable in FA environments: Has passed environment resistance tests equivalent to those for control devices. • CE marking (except for USB). • UL/CSA certification (mark license recognition). • Compact 30-mm-wide body supports both screw-mounting and DIN track mounting. • Operation either with or without echoback available. • Functionality to convert between USB and RS-232C communications added. • USB driver providing virtual communications port for USB communications is available. Note: To use USB communications, the USB driver for the K3SC must be downloaded from the OMRON web site. Application Examples • Data can be transferred between computers (using the USB port if there is no RS-232C port) and field devices. • Using two K3SC Units enables long-distance communications between devices connected via RS-232C.