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5.2 Self-diagnostic function
The S20LP-station has the following self-diagnostic function.
At initialization (at power on)
ROM BCC check
RAM read/write check
CPU and peripheral LSI check
Station number check
Transmission parameter
(EEPROM) check
During operation
Watch dog timer check
Abnormal timer check
(jabber timer) check
Receive frame check (CRC check)
Response check
No signal state check
Diagnostic item
Diagnostic item
33
Station operation abnormal
Station moves into Down mode.
Communications with other stations are
not possible. This state will be reset by
power off/on (SN325, T2N) or pressing
Reset switch (SN325).
Station moves into Standby mode. In
this state, scan transmission is not
possible but message transmission is
available. Station waits for transmission
parameter setting.
Station operation abnormal
Station moves into Down mode.
Communications with other stations are
not possible. This state will be reset by
power off/on (SN325, T2N) or pressing
Reset switch (SN325).
Station ignores the abnormal frame.
In message transmission, if response
from the target station cannot be
received, station re-sends the frame.
If no signal state continues more than
specified time, station starts re-
configuration operation.
6 F 3 B 0 3 5 6
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