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Using Socket Services with CMND(490) Section 6-8
Number bytes to receive: 4 bytes
000CH 0004H 0001H 0110H 0000H 0032H
0123456789
D00030
CMND(490) control data for TCP RECEIVE REQUEST
Number of bytes received specified in command data.
Number of TCP RECEIVE REQUEST command data bytes: 12 bytes (000C
hex
)
2710H 0001H 8203H FC00H 1000H 0000H
0123456789
D01000
C424H 2037H
0000H
TCP PASSIVE OPEN REQUEST command data
Command code
TCP socket number (Ethernet Unit socket number): set to 1
Results storage area: set to D01020 (03FC
hex
)
(Refer to page for details on the results storage area.)
Local port number: set to 4096 (1000
hex
)
Timeout value: Not set
Host computer IP address: 196.36.32.55
(C4
hex
.24
hex
.20
hex
.37
hex
)
Remote node: Not specified
2710H
0123456789
D01010
Re-
sponse
code
TCP PASSIVE OPEN REQUEST response
Stores the response after command execution.
0123456789
D01020
TCP PASSIVE OPEN REQUEST results storage area
Re-
sponse
code
Remote IP
address
Remote
TCP
port No.
2714H 0001H 8204H 1A00H
0123456789
D1030
TCP CLOSE REQUEST command data
Command code
TCP socket number to close: set to 1 (0001
hex
)
Results storage area: set to D01050 (041A
hex
)