GE Multilin L90 Line Current Differential System B-7APPENDIX B B.3 FILE TRANSFERSBe) READING DATA LOGGER FILESFamiliarity with the data logger feature is required to understand this description. Refer to the Data Logger section of Chap-ter 5 for details. To read the entire data logger in binary COMTRADE format, read the following files.datalog.cfg and datalog.datTo read the entire data logger in ASCII COMTRADE format, read the following files.dataloga.cfg and dataloga.datTo limit the range of records to be returned in the COMTRADE files, append the following to the filename before writing it:• To read from a specific time to the end of the log: startTime• To read a specific range of records: startTime endTime• Replace and with Julian dates (seconds since Jan. 1 1970) as numeric text.f) READING EVENT RECORDER FILESTo read the entire event recorder contents in ASCII format (the only available format), use the following filename:EVT.TXTTo read from a specific record to the end of the log, use the following filename:EVTnnn.TXT (replace nnn with the desired starting record number)To read from a specific record to another specific record, use the following filename:EVT.TXT xxxxx yyyyy (replace xxxxx with the starting record number and yyyyy with the ending record number)g) READING FAULT REPORT FILESFault report data has been available via the L90 file retrieval mechanism since UR firmware version 2.00. The file name isfaultReport#####.htm. The ##### refers to the fault report record number. The fault report number is a counter thatindicates how many fault reports have ever occurred. The counter rolls over at a value of 65535. Only the last ten faultreports are available for retrieval; a request for a non-existent fault report file will yield a null file. The current value faultreport counter is available in “Number of Fault Reports” Modbus register at location 0x3020.For example, if 14 fault reports have occurred then the files faultReport5.htm, faultReport6.htm, up tofaultReport14.htm are available to be read. The expected use of this feature has an external master periodically poll-ing the “Number of Fault Reports' register. If the value changes, then the master reads all the new files.The contents of the file is in standard HTML notation and can be viewed via any commercial browser.B.3.2 MODBUS PASSWORD OPERATIONThe L90 supports password entry from a local or remote connection.Local access is defined as any access to settings or commands via the faceplate interface. This includes both keypad entryand the faceplate RS232 connection. Remote access is defined as any access to settings or commands via any rear com-munications port. This includes both Ethernet and RS485 connections. Any changes to the local or remote passwordsenables this functionality.When entering a settings or command password via EnerVista or any serial interface, the user must enter the correspond-ing connection password. If the connection is to the back of the L90, the remote password must be used. If the connectionis to the RS232 port of the faceplate, the local password must be used.The command password is set up at memory location 4000. Storing a value of “0” removes command password protection.When reading the password setting, the encrypted value (zero if no password is set) is returned. Command security isrequired to change the command password. Similarly, the setting password is set up at memory location 4002. These arethe same settings and encrypted values found in the SETTINGS Ö PRODUCT SETUP Ö PASSWORD SECURITY menu via thekeypad. Enabling password security for the faceplate display will also enable it for Modbus, and vice-versa.To gain command level security access, the command password must be entered at memory location 4008. To gain settinglevel security access, the setting password must be entered at memory location 400A. The entered setting password mustmatch the current setting password setting, or must be zero, to change settings or download firmware.
