User`s manual

263
CHAPTER 11 DATA COMMUNICATIONS USING USER FRAMES
11
11.2 Data Reception
[Combination without the first frame]
*1 The reception processing via the receive complete code is not performed when the same data as the receive complete
code has been registered in the last frame.
*2 The data reception interval is not monitored with the no-reception monitoring time (timer 0) when only the last frame is
set.
When a receive error is detected, the Q series C24 stores arbitrary data of the reception data received immediately before
the error in the reception area of the buffer memory, then turns the reception error detection signal (X4) ON.
 Timing pattern number
Combination Amount of reception data of arbitrary data
Reception data
Reception
data prior to
the reception
of the first
frame
When
receiving the
first frame
When receiving
arbitrary data in
the reception
message
When receiving
the last frame
When
receiving the
complete
code (
*1
)
2-A (
*2
)
Reception data count < Received data count

Reception start 2-A 1) 2-A 3)
Reception data count  Received data count
Reception
start
2-A 2) 2-A 4)
2-B (
*2
)
Reception data count = 0 
Reception
start
2-B 