Data Swap Mode; Bit Swap Mode; Figure 7-3 Bit Swap Mode - Hitachi S10mini LQS070 Hardware Manual
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7.9 Data Swap Mode
When the data received from the DeviceNet line is output to an I/O or the data entered from
an I/O is transmitted to the DeviceNet line, data byte and bit arrangements can be specified
with the "FUNC2" rotary switch.
ON and OFF of the bit and byte swapping can be combined to specify byte and bit
arrangements.
7.9.1
Bit swap mode
The bit swap mode is operative for digital (DI/DO) data only. When the bit swap feature is
ON, processing is performed at 16-points (words) as a unit as shown in Figure 7-3. When
the bit swap feature is OFF, the data sent from the DI is transferred to the line and then
output the data as it is to the DO.
<Transmission from D.Station>
Data reception from DI
Data on the line
<Reception by D.Station>
Data on the line
Data transmission to DO
bit
8 7
15
0 1 2 3 4 5 6 7 8 9 A B C D E F
......
Bit swapping
......
bit
8
15
F
E
D
C
B
A
9
8
bit
15
F
E
D
C
B
A
9
......
Bit swapping
......
bit
15
0 1 2 3 4 5 6 7
Figure 7-3 Bit Swap Mode
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7 COMMUNICATION FUNCTION
0
......
......
7
0
7
6
5
4
3
2
1
0
8 7
0
8
7
6
5
4
3
2
1
0
......
......
7
0
8
8 9 A B C D E F
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