4-11
4-4-1 Data sending procedure
Send data (S_DAT)
Send data length (S_LEN)
Send request (S_REQ)
Send end (S_END)
Send error (S_ERR)
Send status (S_STS)
Set data.
Set data length.
Turned ON by the application program.
Turned OFF by the application program.
Result of sending
In case of sending error
S_END and S_ERR are output in one pulse.
S_END and S_ERR are output in one pulse.
Processing for sending
After setting send data and its data length, turn S_REQ (send request) ON by the application program. Then FB detects
the rising edge to execute the processing for sending.
When sending has ended, S_END (send end) flag is turned ON (for only one pulse). If a send error has occurred, S_END
(send end) and S_ERR (send error) are turned ON (for only one pulse), and the corresponding error code is output to
S_STS (send status) (“00” when ended normally).
4-4 Data Sending
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