Using the shelf manager system event log (SEL)
Using the shelf manager CLI
FortiGate-5140B Chassis Guide
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01-500-156415-20151104
0x0080: Event: at Jan 1 00:25:25 1970; from:(0x8e,0,0);
sensor:(0x01,12); event:0x1(asserted): "Upper Critical",
0x09 0xFF 0xFF
Shows the board in ATCA slot 4 has exceeded the CPU board temperature limit:
0x0081: Event: at Jan 1 00:30:40 1970; from:(0x8e,0,0);
sensor:(0x01,13); event:0x1(asserted): "Upper Critical",
0x09 0xFF 0xFF