468.3 C OMMON ERROR C ODE N ODESAlthough the following tables describe common error codes it is worth noting a few here in moredetail.8.3.1 F20n031This warning occurs after new firmware is loaded into the drive. It is merely an announcementthat the firmware has been changed and that the user is strongly advised to reload theconfiguration file into the drive as the non-volatile memory may be corrupt. The only way to get ridof this error is to cycle power – it is a one-shot warning to the user.8.3.2 n09This is a non-volatile memory checksum error and is common after loading new firmware. Theuser is advised to ‘Reset to Factory Defaults’, Save, Coldstart, and then load his configuration file,Save and Coldstart again.8.3.3 n10 and n11These two warnings are announcing that ether the CW or CCW end travel limits are inactive.These two inputs are fail-safe. This means that the input must be ON to signal that there is noover travel limit. All motion in the associated direction of travel will be suppressed while thiswarning is displayed. If need be – the user can reassign the associated digital input to ‘NoFunction’ to work around temporary issues and incontinences.8.4 FAULTS AND ERRORSThe S200 Position Node product has internal fault and error monitoring systems. Constructed of abase-unit drive and a position controller board the product actually has two monitoring systemsand three annunciation systems. The Base Unit is the drive-portion of the product and is an S200Series AC Motor Drive with a single green status LED that signals status of the base unit. Theposition controller card has a seven segment status display used to indicate faults. Finally, theCAN bus firmware has access to a separate MNS bi-color LED to signal bus status. This sectionprovides information about these 3 status indicators, the faults they represent, the conditions thatcan cause the faults, and how to recover from the faults.Faults can occur with primary detection by the drive base-unit. These faults are called ‘b-faults’.(‘b’ Is for Base Unit’). Faults that are primarily detected by the position controller card are called‘F-faults’ (‘F’ for fault’) or ‘o-faults’ (letter O). Base unit errors are detected by the positioncontroller card and become F20 faults be definition. The position controller card annunciatesthese with an ‘F20’ in the seven segment display followed by the ‘b-code’ (base unit) fault.The user interface software, S200 OC Tools, displays drive status information on the StatusMenu real-time. The status block will indicate both a Position Card Fault and the Base-unit fault, ifapplicable.8.4.1 MNS LED Status IndicatorThe MNS status indicator’s function operates differently on CANopen units (-CNS) thanon DeviceNet Units (-DNS). For Device Net it is guided by the rules and definitions of theDeviceNet interface standards.