Profibus D Sub M12 Plug&Play These I-Net Profibus bus connectors have M12 Plug&Play connections. There are four types of body configuration of the M12 Plug&Play I-Net Profibus bus connectors: Standard, Compact, Axial and Special with Body Orientations of 90°, 90°, 180° and 35° respectively. The I-Net Profibus bus connectors are available in two versions, namely: Standard with one male 'D' port connector and PG with two, male and female, 'D' port connectors for monitoring, see table.