15-2615.4.2 Special Internal RelayAddress Name DescriptionR9003 Intelligent unit error flag Turns on when an error occurs in an intelligent unit.The slot number where the erroneous intelligent unit is installed isstored in DT90006 or DT90007.R9004 I/O verification error flag Turns on when an I/O verification error occurs.The slot number of the I/O unit where the verification error wasoccurred is stored in DT90010 or DT90011.R9030 SEND/RECV instructionexecuting flagMonitors if CPU is in the SEND (F145) or RECV (F146)instruction executable condition as follows:OFF: None of the above mentioned instructions can be executed.ON: One of the above mentioned instructions can be executed.R9031 SEND/RECV instruction end flag Monitors if an abnormality has been detected during theexecution of the SEND (F145)/RECV (F146) instructions asfollows:OFF: No abnormality detected.ON: An abnormality detected. (Communication error)The error code is stored in DT90039.R9055 Intelligent communication unit 1transmission error flag (*1 and *2)- Turns on when the Error LED lights on the intelligentcommunication unit.- Turns on when there is an error in the unit No. Settings.R9056 Intelligent communication unit 2transmission error flag (*1 and *2)R9057 Intelligent communication unit 3transmission error flag (*1 and *2)Note1) The following units are included in the intelligent communication unit:- ET-LAN unit- Multi-wire link unit (MEWNET-W2 mode)Note2) Numbered 1,2,3 starting from the slot nearest the CPU unit.
