Up to 15 iba devices that support the 32Mbit Flex protocol (e.g., ibaPADU-S-IT, ibaBM-eCAT) can be connected in a fiber optic ring per I/O link of an ibaFOB-D card. The rotary switch S1 has to be set to a unique device number at each device.

Please note that the total data rate in the fiber optic ring must be distributed among the connected devices.