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202
Socket Services
Section 6-6
Remote IP Address
Specify the IP address of the remote device.
• 2 in the Socket Service Parameter Area contains the upper bytes
of the Remote IP Address, and 3 contains the lower bytes.
Example: The contents of o2 and +3 would be as shown below
when the Remote IP Address is 196.36.32.55 (C4.24.20.37 hexadeci-
mal).
+2: C424
+3: 2037
• This parameter is not used when making a receive request for a UDP
socket. The remote IP address will be stored with the response data and
will be written as the Remote IP Address in the Socket Service Parameter
Area.
• When opening a passive TCP socket, the combination of the remote IP
address and the remote TCP port number can be used to affect process-
ing as shown in the following table.
If the Remote IP Address is set to 0, a connection can be made to any remote
node and the remote IP address of the node that is connected will be stored
as the Remote IP Address in the Socket Service Parameter Area. If a specific
remote IP address is set, then a connection can be made only to the node
with the specified address.
If the Remote TCP Port No. is set to 0, a connection can be made to any
remote node regardless of the TCP port number it is using. If a specific
remote TCP port number is set, then a connection can be made only to a
node using the specified TCP port number.
Remote UDP/TCP Port No.
Specify the UDP or TCP port number used by the remote device.
• This parameter is not used when making a receive request for a UDP
socket. The remote UDP/TCP port number will be stored with the
response data and will be written as the Remote UDP/TCP Port No. in the
Socket Service Parameter Area.
• When opening a passive TCP socket, the combination of the remote IP
address and the remote TCP port number can be used to affect process-
ing as shown in the table for the Remote IP Address, above. If the Remote
UDP/TCP Port No. is set to 0, the UDP/TCP port number of the remote
device will be written as the Remote UDP/TCP Port No. in the Socket Ser-
vice Parameter Area.
Time Out Time
Set the time limit in units of 0.1 s for completion of communications from the
time that the Receive Request Switch (TCP or UDP) or the TCP Passive
Open Request Switch is turned ON. A response code of 0080 hexadecimal
(timeout) will be stored if communications time out. If 0 is set, the requested
service will not be timed.
Remote IP
Address
Remote TCP
Port No.
Processing
0 0 All
connection
requests
accepted.
0
Not 0
Connection requests accepted only for the same
port number.
Not 0
0
Connection requests accepted only for the same
IP address.
Not 0
Not 0
Connection requests accepted only for the same
port number and IP address.
Содержание CP1L-EL20DR-D
Страница 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
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Страница 10: ...x...
Страница 22: ...xxii...
Страница 34: ...xxxiv Software Licenses and Copyrights 7...
Страница 178: ...144 Connecting the CX Programmer Section 5 1 Click the Connect button to connect and then connection online is completed...
Страница 192: ...158 Trial Operation and Debugging Section 5 3...
Страница 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Страница 666: ...632 Trouble Shooting Section 11 7...
Страница 696: ...662 Standard Models Appendix A...
Страница 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Страница 836: ...802 PLC Setup Appendix G...
Страница 838: ...804 TCP Status Transitions Appendix H...
Страница 840: ...806 Ethernet Network Parameters Appendix I...
Страница 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Страница 844: ...810 Ethernet Specifications Appendix K...
Страница 851: ...Index 817 work words 118 write protection 447...
Страница 852: ...818 Index...
Страница 854: ...820 Revision History...
Страница 855: ......