11-1811.1.2 Table of Special Internal Relays for FP2/FP2SH/FP10SHFP2/FP2SH/FP10SHAddress Name DescriptionR9000 Self-diagnostic errorflagTurns on when a self-diagnostic error occurs.The self-diagnostic error code is stored in DT90000.R9001 Not used -R9002MEWNET-TR mastererror flag(Available PLC:FP10SH)Turns on when a communication error occurs in theMEWNET-TR master unit or MEWNET-TR network. Theslot, where the erroneous MEWNET-TR master unit isinstalled, can be checked using DT90002 or DT90003.I/O error flag(Available PLC: FP2/FP2SH)Turns on when the error occurs in the I/O unit. The slotnumber of the unit where the error was occurred is stored inDT90002, DT90003.R9003 Intelligent unit errorflagTurns on when an error occurs in an intelligent unit. The slotnumber, where the erroneous intelligent unit is installed isstored in DT90006 or DT90007.R9004 I/O verification errorflagTurns on when an I/O verification error occurs.The slot number of the I/O unit where the verification errorwas occurred is stored in DT90010 or DT90011.R9005 Backup battery errorflag (non-hold) Turns on for an instant when a backup battery error occurs.R9006 Backup battery errorflag (hold)Turns on and keeps the on state when a backup batteryerror occurs. To reset R9006,- turn the power to off and then turn it on,- initialize, after removing the cause of error.R9007 Operation error flag(hold)Turns on and keeps the on state when an operation erroroccurs. The address where the error occurred is stored inDT90017.(Indicates the first operation error which occurred).FP2SH／FP10SH:When program is 120k steps and the higher byte ofDT90257 is H2, the error occurs in the 2nd program block. Incase of the 1st program block, it is H1.R9008 Operation error flag(non-hold)Turns on for an instant when an operation error occurs. Theaddress where the operation error occurred is stored inDT90018The contents change each time a new error occurs.FP2SH／FP10SH:When program is 120k steps and the higher byte ofDT90258 is H2, the error occurs in the 2nd program block. Incase of the 1st program block, it is H1.R9009 Carry flagTurns on for an instant,- when an overflow or underflow occurs.- when “1” is set by one of the shift instructions.R900A > FlagTurns on for an instant when the compared results becomelarger in the “F60 (CMP)/P60 (PCMP),F61(DCMP)P61(PDCMP),F62 (WIN)/P62 (PWIN) or F63(DWIN)/P63 (PDWIN) comparison instructions.”R900B = FlagTurns on for an instant,- when the compared results are equal in the comparisoninstructions.- when the calculated results become 0 in the arithmeticinstructions.
