Mitsubishi QJ71E71-100 Series, Руководство пользователя

Страница: 130 / 220

5 - 13 5 - 13
MELSEC-Q
5 WHEN USING FILE TRANSFER FUNCTIONS (FTP SERVER)
(3) Precautions common to any usage of the file transfer functions
(a) For external device
When a time-out error occurs during file transfer using the FTP function,
the FTP function line is closed (disconnection) regardless of the GX
Developer setting.
When restarting the file transfer, perform the log-in operation to the Ethernet
module from the FTP client again.
(b) For the QCPU
1) If a password is registered in the target file for file transfer, transfer that
password (set in the Ethernet module) using the FTP operation
command, quote keyword-set, after log-in.
If a password is registered, that file cannot be accessed unless a
password of the same character string is designated.
The password is a character string for file access that the user
registers in the QCPU and it allows/prohibits access to the target file.
2) The QCPU files of target file transfer must be only the files in the root
directory for each memory.
3) When the QCPU file begin accessed, do not perform any QCPU key
switch operations, change operation status with GX Developer (such as
RUN STOP and STOP RUN), turn off power, reset power, or
install/remove the memory card.
If any of these operations are performed, the QCPU files will corrupt and
the QCPU may not be able to start again.
4) Do not perform any file operations (read/write/change file information) from
GX Developer, etc. when the FTP function is in operation.
When file operations are performed from a peripheral device, etc. while the
FTP function is in operation, the FTP function may abnormally end.
5) If the FTP communication port is designated as a port subject to the
remote password check, perform the file transfer operation after
changing the remote password status from lock to unlock.
Perform the lock processing for the remote password when the file
transfer processing is completed.
If the FTP communication port is not designated as a port subject to
the remote password check, the operation is completed normally
when the remote password unlock processing is performed.
The remote password is a character string registered in the QCPU
with the GX Developer by user and data to allow/prohibit access to
the QCPU of another station via the QCPU of the station installed
Ethernet module or via the station installed Ethernet module.
(4) Precaution when logging in to the Ethernet module (FTP server)
Only one external device (FTP client) can log in to the Ethernet module at a time.