Hitachi RAC-E08H2, Руководство по обслуживанию, Страница: 42 / 95

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Fig. 2-4
(1)Outdoor microcomputer (HIC) to indoor microcomputer
Serial Communications Format during Normal Communications
Example When the outdoor message is all 0s
and indoor message is all 1s:
(3)Communications waveforms
Leader
100ms.
Leader
100ms.
When reset
(approx.100ms.)
When reset
(approx.10ms.)
35(V)
34(V)
36(V)
0
7
0
7
7 7 0
33.3ms.
3
2
1
NO
0
Bit No.=0
7
0
7
0
7 0
7
Bit No.=0
3
2
1
(33.3ms.) (33.3ms.)
(33.3ms.)
Transmit/
receive
switching time
(4.95ms.)
(33.3ms.) (33.3ms.)
Outdoor message
Indoor message
(33.3ms.) (33.3ms.)
0
Character No.
(2)In ndoor microcomputer to outdoor microcomputer (HIC)