Hitachi RAS-25CNH2 - [Serial Communications Format during Normal Communications]; Outdoor micro computer (AX-8 J01) to indoor micro computer; Indoor micro computer to outdoor micro computer (AX-8 J01)

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[Serial Communications Format during Normal Communications]
(1) Outdoor micro computer (AX-8J01) to indoor micro computer
(2) Indoor micro computer to outdoor micro computer (AX-8J01)
(3) Communications waveforms
1 frame = 100ms. + 33.3ms. x 8 + 4.95ms. = 371.35ms.
Outdoor message
Indoor message
[Example] When the outdoor message is all 0s
and indoor message is all 1s:
37 (V)
36 (V)
35 (V)
When reset
(approx. 10ms.)
Transmit/
receive
switching time
(4.95ms.)
Character No.
0
(33.3ms.)
1
(33.3ms.)
2
(33.3ms.)
3
(33.3ms.)
Character No.
0
(33.3ms.)
1
(33.3ms.)
2
(33.3ms.)
3
(33.3ms.)
Bit No = 0
Bit No = 0
07
0707077
07077
Leader
(100ms.)
When reset
(approx. 10ms.)
Leader
(100ms.)
Fig. 3-4