6 - 5
6.2.3 Transmission format (direct channel mode)
Details of a 4-byte control or a 4-byte monitor item are as follows:
1) First byte
Table 6-8 First byte
Higher bits
Lower bits
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
*
REC
RMT
4
2
1
The bits have the following meanings.
Bit 7 : 0: The bit indicates the first byte.
Bit 6 : 0: The bit indicates the first byte.
Bit 5 : Not used
Bit 4 : Presence or absence of receiving signal
(0: No receiving signal, 1: receiving signal)
Bit 3 : Classification of remote control or local control
(0: Local control, 1: Remote control)
Bit 2 : Receiving level data (4)
Bit 1 : Receiving level data (2)
Bit 0 : Receiving level data (1)
Details of receiving level data are as shown in table 6-9 "Memory channel data".
Table 6-9 Receiving level data
level
0
1
2
3
4
5
6
7
Bit 2
0
0
0
0
1
1
1
1
Bit 1
0
0
1
1
0
0
1
1
Bit 0
0
1
0
1
0
1
0
1
