11.6.7 Scheme communicationScheme communication functions which are used in conjunction with distanceprotection generate viewable data about the signals used in these applications.Depending on the options chosen, data about weak end infeed, earth faults etc. issent to and from IEDs.11.6.7.1 Scheme communication logic for distance or overcurrent protectionZCPSCHMain menu/Test/Function status/Scheme communication/ZSchemeCommunication(PSCH,85)/ZCOMShows available instances of ZCPSCH .11.6.7.2 Current reversal and weak-end infeed logic for distance protectionZCRWPSCHMain menu/Test/Function status/Scheme communication/ZCurrentReversalWEI(PSCH,85)/EFCADisplays available measurement outputs indicating trip status of weak end infeedlogic.11.6.7.3 Current reversal and weak-end infeed logic for residual overcurrentprotection ECRWPSCHMain menu/Test/Function status/Scheme communication/EFCurrentReversalWEI(PSCH,85)/EFCADisplays one instance of ECRWPSCH with four measurements per instance.11.6.7.4 Scheme communication logic for residual overcurrent protectionECPSCHMain menu/Test/Function status/Scheme communication/EFSchemeCommunication(PSCH,85)/EFCDisplays available instances of ECPSCH with some measurements indicatingcarrier and trip status.11.6.7.5 Local acceleration logic ZCLCPLALMain Menu/Test/Function status/Scheme communication/LocalAccelerationLogic(PLAL)/ZCLCDisplays available measurements indicating trip by loss of load or by zone extensionSection 11 1MRK 511 188-UEN CTest the IED76Operator's manual