Siemens SIMATIC IPC277E

Technical specifications
8.5 Hardware description
SIMATIC IPC277E
122 Operating Instructions, 11/2019, A5E35783335-AE
8.5.4 Input/output address areas
8.5.4.1 Overview of the internal module registers
The following addresses are used for the internal registers:
Addresses
Input/output unit
I/O 062h
Watchdog enable register / 066h select register (Page 122)
I/O 066h
Watchdog trigger register (read only, address 066h) (Page 123)
I/O 404Dh
Battery status register (read-only) (Page 123)
8.5.4.2 Watchdog enable register / 066h select register (read/write, address 062h)
Meaning of the bits
Watchdog enable register / 066h select register (r/w address 062h)
Bit
Meaning of the bits
7
6
5
4
3
2
1
0
Watchdog enable bit (WDE)
0
Watchdog circuit disabled
1
Watchdog circuit enabled
Watchdog Mode
0
Standard
1
Macro
066h select register selection
0
Reserved
1
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