Industrial CANopen Slave to DCON Master Converter. DCON protocol is a kind of application protocol based on the RS-485 network. It is special for ICPDAS DCON I/O modules, such as I-7000 series and I-87K series modules. By way of using I-7231D to convert the electric signals and messages, the DCON I/O modules can be upgraded to the CANopen protocol based on the CAN bus. For CANopen protocol application, the I-7231D is a CANopen slave device. So, i..