Delta AS Series Programming Manual page 970

SM No.
SM1710
SM1712 ~ SM1743
SM1744 ~ SM1775
SM1776 ~ SM1807
SM No.
SM1822
SM1824 ~ SM1855
SM1856 ~ SM1887
SM1888 ~ SM1919
The PLC sets the flag to ON when the reading success flag indicates that receiving data is complete and the data
checked are correct. If an error occurs in receiving data or a communication timeout occurs, the error flag is set to
ON refer to the error codes). The PLC does not reset any of the reading success or error flags to OFF in the data
exchange since the reading success flag and error flag of every connection number are not ON simultaneously.
9. The following table describes the SR (only-read registers) in the data exchange function.
SR No.
SR1335
SR1336
SR1340–SR1371
SR1375
SR1376
SR1380–SR1411
SR1435
SR1436
SR1440 ~ SR1471
SR1475
SR1476
SR1480 ~ SR1511
10. The data exchange function does not provide a writing success flag. It is suggested that you refer to the connection
number in the execution to judge whether the writing of data succeeds or not.
Attribute
Explanation for Function Card 1 data exchange parameters
R/W
Enables data exchange
R/W
Enables data exchange connections 1–32
R
Reading success for data exchange connections 1–32
R Error flags for data exchange connections 1–32
Attribute
Explanation for Function Card 2 data exchange parameters
R/W
Enables data exchange
R/W
Enables data exchange connections 1–32
R
Reading success for data exchange connections 1–32
R Error flags for data exchange connections 1–32
Cycle of the actual connections 1–32 in the COM1 data exchange
Cyclic connection number in the current COM1 data exchange
Error codes of the connections 1–32 in the COM1 data exchange
Cycle of the actual connections 1–32 in the COM2 data exchange
Cyclic connection number in the current COM2 data exchange
Error codes for connections 1–32 in the COM2 data exchange
Cycle of the actual connections 1–32 in the Function Card 1 data exchange
Cyclic connection number in the current Function Card 1 data exchange
Error codes of the connections 1–32 in the Function Card 1 data exchange
Cycle of the actual connections 1–32 in the Function Card 2 data exchange
Cyclic connection number in the current Function Card 2 data exchange
Error codes of the connections 1–32 in the Function Card 2 data exchange
Cha p ter 6 App l ied Ins truc tio ns
Description
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