... :24xDI/16xDO(relay) Communication port:built-in RS422/RS485 WECON 40 i/o plc,LX2N-40MRC-A,replace Mitsubishi's plc Model LX2N-40MR ... interface)COM2:RS485,support modbus,HMI,inverter and others device communication(optional)CAN:use board panel to extend(optional) Extension module ... *102*97mmNet weight0.3kgWet weight0.5kg WECON 40 i/o plc,LX2N-40MRC-A,Replace Mitsubishi'plc