Communication
FPΣ User's Manual
188
Receiving data
Data is automatically received in the receive buffer defined in the system registers. Receiving
includes processing the data in the receive buffer and preparing the system to receive further
data. (See also "
Receiving Data from External Devices" on page 193.) Reception can be
controlled by the "reception done" flag or by directly evaluating the receive buffer. (See also
"
Flag Operation in Program Controlled Communication" on page 198.)
Receiving data
"Reception done" flag is turned on
Data registers (DT)
Device with
RS232C port
Send buffer
Receive buffer
PLC
No end code is included in the data stored. The maximum volume of data that can be
received is 4094 bytes.
NOTE
With FPG-COM4, the time between reception and response should be adjusted
(see page
169).
8.6.1 Setting Communication Parameters
Make the following settings for the communication port:
• communication mode (Program controlled)
• baud rate
• communication format
• receive buffer
For details on setting the communication parameters, see "
Setting System Registers in PROG
Mode" on page
165.
NOTE
Program controlled mode is also available via the TOOL port.
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