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8.1 Communication Instruction
■
Operations when data is received
When the reception done flag is OFF, operation takes place as follows when data is sent from
an external device.
Item
Storage of receive
(1)
data
Reception done flag
(2)
ON
Execute F159 (MTRN)
(3)
instruction
Storage of the
(4)
following receive data
■
Flag operations
Name
R9007
R9008
(ER)
8-18
Description
Incoming data is stored in ascending order from the lower-order byte of the 2nd-
word area of the receive buffer. Header and terminator (start and end codes) are
not stored.
When the terminator (end code) is received, the reception done flag turns ON.
Reception of any further data is prohibited.
When an F159 (MTRN) instruction is executed, the reception done flag turns
OFF. The number of received bytes in the receive buffer starting number is
cleared. Data in the receive buffer is not cleared.
Reception is enabled when the reception done flag turns OFF, and the storage of
receive data is restarted.
Description
Turns ON when the area is exceeded in index modification
Turns ON when the data table exceeds the area in the specification of bytes in [n].
WUME-FPXHCOMG-02
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