Panasonic FP7 Series User Manual page 164

9.5 Sending/Receiving Flag Operation
Sending process: Sending done flag and GPSEND instruction are related as follows:
● Header (STX) and terminator (ETX) are automatically added to the data to be sent. The data
are transmitted to an external device.
● After GPSEND instruction is executed, data transmission is started in several μs to several
tens of ms. For time before transmission is started, please refer to the communication cycle
time (SM208-SM210) using the system monitor function.
● After GPSEND instruction is executed, dual sending to the same port is not possible until the
"sending general-purpose communication flag" (Y8, Y9, YA, YB) turns OFF.
● The "General-purpose communication Sending active flag" (Y8, Y9, YA, YB) turns OFF in
GPSEND instruction execution in the next scan or later following completion of data sending
to an external device. The "General-purpose communication Sending active flag" (Y8, Y9,
YA, YB) always remains on for at least 1 scan time.
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