48
7 OPTION
48
OPTION
Chapter
7
Event log and details of events
Events can be classified into four types.
◎ Receiving event (when bit 7 is "1")
Bit
0Unused
1 Communication error
2Unused
3Unused
4 Character overrun
5 In listen-only mode ("0" on the F331)
6 Receiving broadcast
71
◎ Sending event (when bit 7 is "0")
Bit
0 Sending exception code 1 to 3
1 Sending exception code 4
20
30
4 Send and write timeout
5 In listen-only mode ("0" on the F331)
61
70
◎ Slave in listen-only mode
In listen-only mode, 04 is recorded.
◎ Communication initialized by Communication restart
This event is recorded when communications are restarted.
The event becomes 00.
If each slave is in Continue-on-error mode, the event is written in the existing log.
If in Stop-on-error mode, the log is cleared and 00 is written in event 0.
(The F331 is fixed in Stop-on-error mode.)
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