Mitsubishi Melsec-L Series User Manual page 165

(3) Functions
• This instruction performs the close process for a connection specified by (S1) for the module specified by Un
(connection closed).
• Completion of the CLOSE instruction can be checked with Completion device (D1)+0 and (D1)+1.
Item
Completion device
(D1)+0:
Completion device
(D1)+1:
[Operation while the CLOSE instruction is being executed]
Program
CLOSE instruction
Completion device
Completion device + 1
• The ZP.CLOSE instruction is executed on the rising edge (OFF ON) of the close command.
Do not perform a open/close process using I/O signals and using the dedicated instruction together for the same connection.
Doing so will result in malfunction.
(4) Errors
If a dedicated instruction ends with an error, Completion device (D1)+1 turns on, and the error code is stored in
Completion status (S2)+1.
Turns on at the END process of the scan where the CLOSE instruction is completed and
turns off at the next END process.
Turns on and off depending on the completion status of the CLOSE instruction.
Normal completion: Stays off and does not change.
Abnormal end: Turns on at the END process of the scan where the CLOSE instruction is
completed and turns off at the next END process.
END
Scan Scan
process
Executed
Connection
closed
CHAPTER 13 DEDICATED INSTRUCTIONS
Description
END END
Scan
process process
Abnormally ended
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