Omron CS1W-ETN01 用户手册
140
Using Socket Services with CMND(490)
Section 6-3
Note If there is more than one Communications Unit mounted to the PC, the FINS
network address must be set as a parameter for CMND(490) and a local net-
work table must be created in the routing tables from the CX-Programmer.
work table must be created in the routing tables from the CX-Programmer.
6-3-1
UDP/TCP Socket Status
The status of the UDP and TCP sockets is provided in the Socket Status
Words shown in the following diagram. There is a status word for each socket
for both UDP and TCP. The Socket Status Words are allocated in the CPU
Bus Unit Area in the CPU Area starting at the word n+ 1. The value of n can
be calculated from the unit number as follows:
Words shown in the following diagram. There is a status word for each socket
for both UDP and TCP. The Socket Status Words are allocated in the CPU
Bus Unit Area in the CPU Area starting at the word n+ 1. The value of n can
be calculated from the unit number as follows:
n = 1500 + (25 x unit number)
The flags shown in the following diagram are provided in the Socket Status
Words for socket service requests made with CMND(490).
Words for socket service requests made with CMND(490).
UDP Socket No. 1 Status
TCP Socket No. 1 Status
TCP Socket No. 2 Status
TCP Socket No. 3 Status
TCP Socket No. 4 Status
TCP Socket No. 5 Status
TCP Socket No. 6 Status
TCP Socket No. 7 Status
TCP Socket No. 8 Status
UDP Socket No. 2 Status
UDP Socket No. 3 Status
UDP Socket No. 4 Status
UDP Socket No. 5 Status
UDP Socket No. 6 Status
UDP Socket No. 7 Status
UDP Socket No. 8 Status
n+1
n+2
n+3
n+4
n+5
n+6
n+7
n+8
n+9
n+10
n+11
n+12
n+13
n+14
n+15
n+16
15
8
7
0
Opening Flag
Receiving Flag
Sending Flag
Closing Flag
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Results Storage Error Flag
Socket Open Flag
Bit
Flag
Status Manipulated
by
Unit operation
0
Opening Flag
ON
Unit
Turns ON when an open request is received.
OFF
Turns OFF when open processing has been completed.
1
Receiving Flag
ON
Turns ON when a receive request is received.
OFF
Turns OFF when receive processing has been completed.
2
Sending Flag
ON
Turns ON when a send request is received.
OFF
Turns OFF when send processing has been completed.
3
Closing Flag
ON
Turns ON when an close request is received.
OFF
Turns OFF when close processing has been completed.