The Omron CJ1W-DRM21 Programmable Logic Controller (PLC) is a DeviceNet Master/Slave Unit supporting up to 63 nodes and baud rates of 500 kbps, 250 kbps, and 125 kbps. It enables maximum 512 input words and 512 output words exchange, providing high-speed I/O mapping and automatic recovery from communication errors. Manufactured by Omron, part of the Omron Programmable Logic Controller family, available under the Omron CJ1W Series.