Figure 2-1 State Of The Status Lamp And The Cpustop Contact - Hitachi HF-W7500 65 Feature Manual

Figure 2-1 shows how the state of the status lamp and the state of the CPUSTOP contact
change.
OS monitoring timer
starts being retriggered.
Power on
Contact open
(Status lamp:
green)
Contact closed
(Status lamp:
red)
OS startup

Figure 2-1 State of the Status Lamp and the CPUSTOP Contact

Dotted lines in Figure 2-1 denote the respective state of the contact and the thick line denotes
the transition of the state of the contact.
OS monitoring timer
is timed out
3 sec
Timer is
CPU load
retriggered
is used up by
Timer is
a driver
retriggered
2-7
2. ITEMS MONITORED BY THE RAS FEATURE
OS shutdown
starts
3 sec
Timer is Timer stops being
retriggered retriggered
OS
Turning off
shutdown
the power
Time →