Receiving Control Method; Receive Processing With The Main Program - Mitsubishi Electric FX3U-ENET User Manual

7 FIXED BUFFER COMMUNICATION (WITH THE NO PROCEDURE
CONTROL METHOD)

7.3 Receiving Control Method

This section explains the control method when the Ethernet module receives data
from an external device.

7.3.1 Receive processing with the main program

This section explains the receiving process to be performed with the main program,
using an example in which the fixed buffer No. 2 and the area corresponding to
connection No. 2.
• For FX
* <<Storing the data received from the external device to the fixed buffer No.2 in D1000 and after>>
M8000
[=
[=
User applications are described at the area enclosed with
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/FX Series PLCs
3U 3UC
Program example for the unit No. 0
D100 H1 ]
Receiving
status
D100 H8 ]
Receiving
status
[MOV
[MOV
* <Adjustment when an odd number of data bytes is received
[ADD D101
Received
data count
* <Word count from number of receive data
[DIV D101
Received
data count
U0\
[BMOV G2689
Fixed buffer
No.2
[MOV
.
MELSEC-F
U0\
G1611 D100 ]
Receiving Receiving
instruction/status status
U0\
G2688 D101 D101 ] ]
Received Received
data count data count
>
H1 D101 ]
Received
data count
>
H2 D103 ]
Received
word count
D1000 D103 ]
Receive data Received
storage head word count
U0\
H2 G1611 ]
Receiving
instruction/
status
[INCP D102 ]
Receive
abnormal
processing
[END ]
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