Attributes . for PWR 1 LED (green) || for RUN 1 LED (green) || for module error (ERR) 1 LED (red) || for I/O error (I/O) 1 LED (red) || for SD card access (SD) 1 LED (green) || for BAT 1 LED (red) || for SL1 1 LED (green) || for SL2 1 LED (green) || for bus fault on TM4 (TM4) 1 LED (red) || for I/O state 1 LED per channel (green) || for Ethernet port activity 1 LED (green) . Names