The isolated output module provides eight outputs arranged as four groups of 2. Each group is isolated from the others. Individual LEDs (logic side), visible through the transparent portion of the module top, indicate the on/off status of each output. The abbreviations F1/PWR, F2/PWR, F3/PWR and F4/PWR refer to the Fuse OK LED for each of the four groups. Intelligent processing for this module is performed by the Bus Interface Unit or elsewhere in the system. This includes configuring features such as output default and fault reporting. The module has 8 bits (one byte) of discrete output data. A Bus Interface Unit is required to obtain this output data from the host and/or local processor.