688
Auxiliary Area Allocations by Function
Appendix C
Socket Service Request Switches
Networks
Network Communications Information
Item
Socket Service Request
Switch 1
Socket Service Request
Switch 2
Socket Service Request
Switch 3
UDP Open Request Switch
A571.00
A571.08
A572.00
TCP Passive Open Request
Switch
A571.01
A571.09
A572.01
TCP Active Open Request
Switch
A571.02
A571.10
A572.02
Send Request Switch
A571.03
A571.11
A572.03
Receive Request Switch
A571.04
A571.12
A572.04
Close Request Switch
A571.05
A571.13
A572.05
Name
Description
Access
Updated
UDP Open Request Switch
UDP socket opened when switch is turned ON.
Unit turns OFF switch when open processing has been completed
(i.e., when a connection has been made).
Read/Write
TCP Passive Open Request
Switch
Passive TCP socket opened when switch is turned ON.
Unit turns OFF switch when open processing has been completed
(i.e., when a connection has been made).
Read/Write
TCP Active Open Request
Switch
Active TCP socket opened when switch is turned ON.
Unit turns OFF switch when open processing has been completed
(i.e., when a connection has been made).
Read/Write
Send Request Switch
Send processing executed when switch is turned ON. (The proto-
col (TCP/UDP) is determined when the socket is opened.)
Unit turns OFF switch when send processing has been completed.
Read/Write
Receive Request Switch
Receive processing executed when switch is turned ON. (The pro-
tocol (TCP/UDP) is determined when the socket is opened.)
Unit turns OFF switch when receive processing has been com-
pleted.
Read/Write
Close Request Switch
Close processing executed when switch is turned ON. (The proto-
col (TCP/UDP) is determined when the socket is opened.)
Unit turns OFF switch when close processing has been completed.
Read/Write
Name
Address
Description
Access
Updated
Communications Port
Enabled Flags
A202.00 to
A202.07
ON when a network instruction or background execution
can be executed with the corresponding port number.
Bits 00 to 07 correspond to communications ports 0 to 7.
Read-only
Communications Port Com-
pletion Codes
A203 to
A210
These words contain the completion codes for the corre-
sponding port numbers when network instructions have
been executed.
Words A203 to A210 correspond to communications
ports 0 to 7.
Read-only
Communications Port Error
Flags
A219.00 to
A219.07
ON when an error occurred during execution of a net-
work instruction.
OFF when a normal response is returned.
Bits 00 to 07 correspond to communications ports 0 to 7.
Read-only
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......