Watchdog Time Setting <Bfm #9> (Read / Write) - Mitsubishi Electric FX2N-32ASI-M User Manual

FX2N-32ASI-M AS-interface Master Block
5.4 Watchdog Time Setting <BFM #9> (Read / Write)
The watchdog time is adjusted in 10 ms steps. Default value is 20 (20 × 10 ms = 200 ms).
When this value is 0, the watchdog timer is disabled. When BFM #0 to #8 are not accessed by
FROM / TO instructions, the watchdog timer begins operating.
When the watchdog time is written in BFM #9 by TO instruction, the watchdog timer is reset. At
this time, 32ASI-M turns off both bit 8 of BFM #8 and bit 4 of BFM #29, and clears the data for
the output in BFM #0 to # 7, so data for using all outputs has to be rewritten.
If the watchdog timer reaches its set time (BFM #9 × 10 ms), a watchdog timer error occurs. At
this time, both bit 8 of BFM #8 and bit 4 of BFM #29 are turned ON and all the outputs of the
slaves connected to the 32ASI-M are turned off.
Allocation of Buffer Memories (BFMs) 5.
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