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(2) No procedure
The following is the data send process performed in the fixed buffer number 1 area for the connection number 1.
During UDP/IP communications, when the internal process of an E71 is normally completed, the data send process ends
even if the communication line between a CPU module and the connected device is not connected due to cable
disconnection or other causes. It is recommended to set an original communication procedure to send/receive data.
Confirm the normal completion of the initial process. (Initial normal completion signal (X19): ON)
Establish a connection between the E71 and the connected device and confirm the normal completion of the
open process of the connection number 1.
Execute the BUFSND instruction. (The data is sent.)
The send data in the fixed buffer number 1 is sent to the connected device by the send data length.
The E71 stops sending data. After the data send process abnormally ends, execute the BUFSND instruction
again to repeat the send process.
1
2
3
5
4
Initial normal completion
signal X19
BUFSND instruction
BUFSND instruction
completion device
BUFSND instruction
completion device + 1
Initial process Open process
1 scan
Sending data
Open completion signal
(address: 5000H [b0])
ACK
(TCP only)
Sending data
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