BL67 modular I/O system is a flexible approach to connectorized I/O. The system is made up of a gateway for network interface, electronic modules for I/O signals and base modules for connectorization. The gateway provides communication between the fieldbus and the I/O modules. I/O modules are not dependent on the fieldbus protocol. The DIN-rail or frame-mountable base modules are available with eurofast, minifast and picofast connectors.Â