Seneca S6001-RTU, Руководство пользователя

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USER MANUAL – Z-TWS4/Z-PASS2-S/S6001-RTU
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19.2.5 WDOG_KEEP_ALIVE
This function restarts the HW Watchdog timer.
NOTICE: once enabled, the HW Watchdog cannot be disabled; the WDOG_KEEP_ALIVE
function shall be called to restart the timer; if timeout elapses, an HW reboot
is triggered.
To let this function actually work, the "WATCHDOG/Enable" parameter in the CPU
configuration shall be set to "OFF"; otherwise, the function will return the -2
value (see below).
INPUTS:
none
OUTPUTS:
- RESULT: the function result; possible values are:
0: OK
-1: watchdog setting failed (WDOG_SET_TMO function has not been called or
failed)
-2: watchdog controlled by system ("WATCHDOG/Enable" parameter set to "ON")
-3: watchdog keep-alive failed
19.2.6 WDOG_SET_TMO
This function enables the HW Watchdog.
NOTICE: once enabled, the HW Watchdog cannot be disabled; the WDOG_KEEP_ALIVE
function shall be called to restart the timer; if timeout elapses, an HW reboot
is triggered.
The function can be called many times; if the timeout value is the same already
set, it will do nothing; otherwise, the new timeout value will be set.