WAGO 750 Series Manual page 183

Register address 0x1005 (MODBUS Address 404102)
Designation
Access
Default
Description
Register address 0x1006 (MODBUS Address 404103)
Designation
Access
Default
Description
Register address 0x1007 (MODBUS Address 404104)
Designation
Access
Default
Description
Register address 0x1008 (MODBUS Address 404105)
Designation
Access
Default
Description
Register address 0x1009 (MODBUS Address 404106)
Designation
Access
Description
Register address 0x100A (MODBUS Address 404107)
Designation
Access
Default
Description
All register data is in word format.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Watchdog stoppen, WD_AC_STOP_MASK
read / write
0x0000
This register is used to stop the watchdog timer by entering a value of
0xAAAA followed by 0x5555.
While watchdog is running, WD_RUNNING
read
0x0000
Current watchdog status.
at 0x0000: Watchdog not active,
at 0x0001: Watchdog active.
at 0x0002: Watchdog exhausted.
Restart watchdog, WD_RESTART
read / write
0x0001
This register restarts the watchdog timer by writing a value of 0x1 into it.
If the watchdog was stopped before the overrun, it is not restarted.
Simply stop watchdog WD_AC_STOP_SIMPLE
read / write
0x0000
This register stops the watchdog by writing the value 0x0AA55 or 0X55AA
into it. The watchdog timeout fault is deactivated and it is possible to write in
the watchdog register again. If there is an existing watchdog fault, it is reset
Close MODBUS socket after watchdog timeout
read / write
0 : MODBUS socket is not closed
1: MODBUS socket is closed
Alternative watchdog
read / write
0x0000
This register provides an alternate way to activate the watchdog timer.
Proceedure: Write a time value in register 0x1000; then write a 0x0001 into
register 0x100A. With the first MODBUS request, the watchdog is started.
The watchdog timer is reset with each Modbus/TCP instruction. If the watch
dog times out, all outputs are set to zero. The outputs will become
operational again, after communications are re-established.
MODBUS Functions
Internal Variables
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