Omron CS1W-ETN01 Operation Manuals page 65

CIO Area Allocations
Status of UDP/TCP Sockets 1 to 8 (Ethernet Unit to CPU Unit)
n+1 to n+16
Bit Flag
0 Opening Flag
1 Receiving Flag
2 Sending Flag
3 Closing Flag
4 to 13 (Not used.)
14 Results Storage
Error Flag
15 TCP/UDP Open Flag
52
15 14 13 12 11 10 9
Results Storage Error Flag
TCP/UDP Open Flag
Status Manipulated
by
ON Unit
OFF Unit
ON Unit
OFF Unit
ON Unit
OFF Unit
ON Unit
OFF Unit
--- ---
ON Unit
OFF Unit
ON Unit
OFF Unit
Note The status of these flags can also be checked using the CX-Programmer.
Opening Flag (Bit 0)
Turns ON when an open request is received either by control switch manipula-
tion or the CMND(490) instruction, and turns OFF again when the open process-
ing has been completed. When CMND(490) is used, the Results Storage Error
Flag (bit 14) will turn ON at the same time as the Opening Flag turns OFF if there
is an error in the Results Storage Area designation.
Receiving Flag (Bit 1)
Turns ON when a receive request is received either by control switch manipula-
tion or the CMND(490) instruction, and turns OFF again when the receive proc-
essing has been completed. When CMND(490) is used, the Results Storage Er-
ror Flag (bit 14) will turn ON at the same time as the Receiving Flag turns OFF if
there is an error in the Results Storage Area designation.
8 7 6 5 4 3 2
Unit operation
ON during open processing. (Turns ON when
open request is received.)
Turns OFF when open processing has been
completed.
ON during receive processing. (Turns ON when
receive request is received.)
Turns OFF when receive processing has been
completed.
ON during send processing. (Turns ON when
send request is received.)
Turns OFF when send processing has been
completed.
ON during close processing. (Turns ON when
close request is received.)
Turns OFF when close processing has been
completed.
---
Turns ON if there is an error in storing the
results when socket services are used by
means of the CMND(490) instruction.
Turns OFF when the next request is received.
(Connected by TCP.)
Turns ON when open processing has been
completed.
Turns OFF when close processing has been
completed. (Stays OFF for abnormal open
processing completion.)
Section
1 0
Opening Flag
Receiving Flag
Sending Flag
Closing Flag
Reference
Section 6
Socket
Services
---
Section 6
Socket
Services
4-3