Technical information
8.5 Hardware descriptions
SIMATIC IPC477D, IPC477D PRO
238
Operating Instructions, 11/2016, A5E31347228-AF
Watchdog enable register / 066h select register (r/w address 062h)
Scaler watchdog time (Normal/Macro)
0 0 0
94 ms / 2 s (default)
0 0 1
210 ms / 4 s
0 1 0
340 ms / 6 s
0 1 1
460 ms / 8 s
1 0 0
590 ms / 16 s
1 0 1
710 ms / 32 s
1 1 0
840 ms / 48 s
1 1 1
960 ms / 64 s
Trigger red Watchdog LED
0
Red LED (WD) off
1
Red LED (WD) on
Watchdog error / Display and reset
0
WD inactive
1
WD triggered
Reset LED after watchdog alarm
(Bit 7 = write 1)