Mitsubishi Electric L26CPU-BT User Manual page 240

(2) Receivable data size and receive data size
Set a receivable data size ((S1)+3) so that it will satisfy the following conditional expression: Receivable data size
((S1)+3)  Receive data size ((S1)+4)
Programmable controller CPU
Size
specified
in (S1)+3
If the receivable data size ((S1)+3) is smaller than the receive data size ((S1)+4), data sent from a remote device
station cannot be received. The G(P).RDMSG instruction will fail (error code: B418
• When the receivable data size ((S1)+3) is an odd number of bytes
If the receivable data size ((S1)+3) is an odd number of bytes and the same data size is received, 0 is stored in
the high byte of storage area of the last data.
Programmable controller CPU
In the high
byte of the
last data,
0 is stored.
• When the receive data size ((S1)+4) is an odd number of bytes (when data received from a remote device
station is an odd number of bytes in length)
If the receive data size is an odd number of bytes, the last receive data is stored in the lower byte of storage area
of the last data. Also, 0 is stored in the high byte of storage area of the last data.
Programmable controller CPU
In the high
byte of the
last data,
0 is stored.
238
Master station
Device Received
memory data
Data are
not stored.
Master station
Device Received
memory data
0
Master station
Device Received
memory data
0
Remote device station
Size
Response
stored
in (S1)+4
Remote device station
Response
Remote device station
Response
).
H