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Using Socket Services with CMND(490)
D00010
D00020
D00030
Number of bytes received is specified in command data.
D01000
D01010
Stores the response after command execution.
D01020
D1030
134
0
1
2
3
CMND(490) control data for UDP CLOSE REQUEST
0008H 0004H 0001H 0110H 0000H 0032H
Number bytes to receive: 4 bytes
Number of bytes to send: 8 bytes
0
1
2
3
CMND(490) control data for UDP SEND REQUEST
0074H 0004H 0001H 0110H 0000H 0032H
Number bytes to receive: 4 bytes
Number of bytes to send: 114 (0072
Command format = 14 bytes + 100 bytes send data
0
1
2
3
CMND(490) control data for UDP RECEIVE REQUEST
000CH 0004H 0001H 0110H 0000H 0032H
Number bytes to receive: 4 bytes
Number of bytes to send: 12 bytes (000C
0
1
2
3
UDP OPEN REQUEST command data
2701H 0001H 8203H FC00H 1000H
Results storage area: set to D01020 (03FC
(Refer to page 192 for details on formats for socket services)
UDP socket number (Ethernet Unit socket number): set to 1
Command code
0
1
2
3
UDP OPEN response
Re-
sponse
2701H
code
0
1
2
3
UDP OPEN REQUEST results storage area
Re-
sponse
code
0
1
2
3
UDP CLOSE REQUEST command data
2704H 0001H 8204H 1A00H
UDP socket number closed: set to 1 (0001
Command code
4
5
6
7
4
5
6
7
) bytes
hex
4
5
6
7
)
hex
4
5
6
7
Local port number: set to 4096 (1000
4
5
6
7
4
5
6
7
4
5
6
7
Results storage area: set to D01050 (041A
hex
Section
8
9
8
9
8
9
8
9
)
hex
)
hex
8
9
8
9
8
9
)
hex
)
6-3
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