8 BUILT-IN ETHERNET FUNCTION INSTRUCTIONS
8.1 Open/Close Processing Instructions
621
8
This instruction performs the open processing for the connection specified by (s1).
The setting value used by the open processing is selected by (s2)+0.
The completion of the SP.SOCOPEN instruction can be checked using the completion devices (d)+0 and (d)+1.
• Completion device (d)+0: Turns ON during the END processing for the scan in which the SP.SOCOPEN instruction is
completed, and turns OFF during the next END processing.
• Completion device (d)+1: Turns ON or OFF depending on the status of when the SP.SOCOPEN instruction is completed.
• The connection in which no protocol is set with the parameter can be opened and used. In this case, specify 8000H in
(s2)+0 and the contents of the open processing in (s2)+2 to (s2)+9.
For details, refer to  Built-in Ethernet communication manual.
Status Description
When completed normally The device does not change (remains OFF).
When completed with an error The device turns ON during the END processing for the scan in which the SP.SOCOPEN instruction is completed, and
turns OFF during the next END processing.
Error code
(SD0/SD8067)
Description
3405 The connection number specified by (s1) is other than 1 to 8.
2820 The device number specified by (s2) or (d) is outside the range of the number of device points.
2822 Device that cannot be specified is specified.
3582 When an instruction which cannot be used in interruption routine program is used.
Program
END processing END processing
END processing
When failed
OFF
ON
ON
Completion device (d)+0
SP.SOCOPEN instruction
Execute SP.SOCOPEN instruction
OFF
Completion device (d)+1
1 scan when
normally completed
Connection
open
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