6 F 3 B 0 3 6 4
123
5.3.2 Asynchronous Mode Data Input/Output
When outputting: Output data to slave devices will be written in the output data area of the DN211
from the T2/T2E/T2N. The DN211 transmits output data written in its scan
cycle to slave devices (unrelated to the output data write timing by the
T2/T2E/T2N).Unless output data is updated, the DN211 continues to transmit
the same data.
When inputting: The DN211 receives data from slave devices in polling response/bit strobe
response. The DN211 updates data in the input data area when completing data
reception from all slave devices. The DN211 doesn't inform the T2/T2E/T2N of
the completion of receiving data. The T2/T2E/T2N reads input data regardless
of the timing of input data updates by the DN211.
T2/T2E/T2N Data Update Cycle
DN211
Slave
T2/
T2E/
Output
Input
data
Output
data
Output
processing
Response
Response
Output
processing
Intput
processing
Iutput
processing
Output
processing
Intput
processing
Output
processing
Response
DN211 scan
Figure 5.4 Asynchronous Mode Data Input/Output
Input data area
0000H D02100
0001H Node address = 1 D02101
0002H D02102
0003H D02103
0004H Node address = 6 D02104
0005H D02105
0006H Node address = 8 D02106
0007H D02107
0008H Node address = 20 D02108
0009H D02109
000AH Node address = 22 D02110
Output data area
0080H D1710
0081H
Node address = 1
D1711
0082H D1712
0083H
Node address = 6
D1713
0084H D1714
0085H
Node address = 20
D1715
Bit strobe output data area
0100H D1700
0101H D1701
0102H D1702
0103H D1703
