RTU-DNET supports Group 2 only servers, supports the explicit connection in the pre-defined master/slave connection group, and polled I/O connection. The DeviceNet configuration software DeviceNet Builder provides a graphic configuration interface to auto-scan and identify extension modules, configure control registers (CR) to be I/O data, set up error correction methods, and diagnose errors in each module. Users can determine whether to keep the data in the register when the network is cut off. Extendable to the max. 128 input points and 128 output points and connectable to 8 modules. Supports Modbus protocol and is connectable to 8 Modbus devices.