Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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16 ETHERNET INSTRUCTIONS
16.1 Open/Close Processing Instructions
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Applicable devices
*1 FX and FY cannot be used.
*2 FD cannot be used.
*3 T, ST, C, and FD cannot be used.
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Control data
Processing details
• These instructions close the connection specified by (s1) of the module specified by (U).
• The execution status and the completion status of the CLOSE instruction can be checked with the completion device (d)
and the completion status indication device (d)+1.
• The following figure shows the operation at completion of the CLOSE instruction.
• The CLOSE instruction is executed on the rising edge (OFF to ON) of the close command.
Precautions
• For the same connection, do not perform open and close processing using the OPEN and CLOSE instructions concurrently
with open and close processing using other means. Concurrent use results in a malfunction.
• If a connection for which the OPEN instruction is in execution is specified in TCP Unpassive/Fullpassive open mode, an
error (C1B2H: OPEN/CLOSE instruction is in execution for the specified connection) occurs.
Operand Bit Word Double word Indirect
specification
Constant Others
(U)
X, Y, M, L,
SM, F, B,
SB, FX, FY J  \  T, ST, C, D, W,
SD, SW, FD,
R, ZR, RD U  \G  , J  \  ,
U3E  \(H)G 
Z LT, LST,
LC LZ K, H E $
(U) GP.CLOSE
           
ZP.CLOSE
           
(s1) 
*1
 
*2
        
(s2)   
*2
        
(d1)

*1
 
*3
        
Operand: (s2)
Device Item Description Setting range Set by
+0 System area   
+1 Completion status The completion status is stored upon completion of the instruction.
• 0: Completed successfully
• Other than 0: Completed with an error (error code)

System
• Completion device (d)
This device turns on during END processing of the scan where the CLOSE instruction completes, and turns off during the next END processing.
• Completion status indication device (d)+1
This device turns on or off depending on the completion status of the CLOSE instruction.
When completed successfully: The device remains off.
When completed with an error: The device turns on during END processing of the scan where the CLOSE instruction completes, and turns off during the next
END processing.
END 0 END 0 END 0 END 0
OFF
OFF
OFF
OFF
ON
ON
Sequence scan
CLOSE instruction
Completion device (d)
Completion status
indication device (d)+1
Completed with an error
Completed successfully
1 scan
Closing a connection
Execution of theinstruction