Contents26 PAC8000* IO PROFINET Scanner User’s Manual–September 2017 GFK-2839B2.9 PAC8000 PROFINET Scanner Power-up and RestartOnce PNS is powered up, the OK LED remains ON. If a fatal error occurs during powerup,the LED blinks instead.If the module encounters a hardware failure, invalid firmware image, or the powerupdiagnostics fail, the module will not become operational; it may enter firmware update mode.Cycling power to the module should restore operation.
