GTG#1 and STG normal shut down from signals full block auto shutdown. Previously we press to command TRAIN-B and AUTO in INDIVIDUAL STOP SEQUENCE to stop GTG#2 and switch the monitor to logic page to check shutdown logic. But the command of FULL BLOCK AUTO in STOP MODE was pending on. Therefore the system was operated command of FULL BLOCK AUTO instead of TRAIN-B INDIVIDUAL STOP. Please see ATTACHMENT 2: Graphic Plant shutdown panel