197
Socket Services
Section 6-6
Note
Do not forcibly manipulate the above status flags during socket service is
used.
Socket Service Request
Switches 1 to 3
Bit
Flag
Status
Manipulated
by
Unit operation
Access
0
Opening Flag
ON
Unit
ON during open processing. (Turns
ON when open request is received.)
Read only
OFF
Unit
OFF when open processing has
been completed.
1
Receiving Flag
ON
Unit
ON during receive processing.
(Turns ON when receive request is
received.)
OFF
Unit
OFF when receive processing has
been completed.
2
Sending Flag
ON
Unit
ON during send processing. (Turns
ON when send request is received.)
OFF
Unit
OFF when send processing has
been completed.
3
Closing Flag
ON
Unit
ON during close processing. (Turns
ON when close request is received.)
OFF
Unit
OFF when close processing has
been completed.
4 to 12
(Not used.)
---
---
---
---
13
Data Received Flag ON
Unit
ON when data from a remote node
has been received at an open TCP
socket.
Read only
OFF
Unit
OFF when receive processing has
been requested for an open TCP
socket.
14
Results Storage
Error Flag
ON
Unit
ON if there is an error in storing the
results when socket services are
used.
OFF
Unit
Turns OFF when the next request is
received.
15
TCP/UDP Open
Flag
ON
Unit
ON when open processing has been
completed.
OFF
Unit
OFF when close processing has
been completed. (Stays OFF for
abnormal open processing comple-
tion.)
15 14
13 12
11
10
9 8
7 6 5
4 3 2
1 0
UDP Open Request Switch
TCP Passive Open Request Switch
TCP Active Open Request Switch
Send Request Switch
Receive Request Switch
Close Request Switch
A571 to A572
Содержание CP1L-EL20DR-D
Страница 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Страница 4: ...iv...
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: ......