Omron NY532-5400 User Manual page 295

 Restrictions on Login Name and Password Setting
The following restrictions apply to login names and passwords.
• Only single-byte alphanumeric characters can be used in the login name and password. The login
name and password are case sensitive.
• A login name consists of up to 12 characters.
• A password consists of 8 to 32 characters.
• Always set a password when you set a new login name. The login name will not be valid unless a
password is set for it.
• The login name is invalid if the login name is not set or characters other than single-byte alphanu-
meric characters are used.
 FTP File Transfer Mode
FTP has two file transfer modes: ASCII mode and binary mode. Before you start to transfer files, use
the type command (specifies the data type of transferred files) to select the required mode.
• To transfer a file in binary format: Select binary mode.
• To transfer a file in ASCII format: Select ASCII mode.
 Multiple Accesses to the Same File
Files accessed with the FTP server may be simultaneously accessed from multiple sources with
communications commands from other FTP servers or programming instructions. Exclusive control
is required to prevent multiple accesses. This is to prevent reading and writing the same file at the
same time. The Controller automatically performs exclusive control as shown below only when the
following combinations of instructions are used. In other cases, use file operation instructions
(Change File Name, Copy File, etc.) or communications commands and perform exclusive control.
• Exclusive Control When Accessing the Same File on the Virtual SD Memory Card
Instruc-
tions
File
operations
from the
Sysmac
Studio
FTP server
*1 The instructions include the SD Memory Card operation instructions and the FTP client communications
instructions.
NY-series Industrial Panel PC / Industrial Box PC Built-in EtherNet/IP Port User's Manual (W563)
Instructions
Reading
Exclusive control is per-
formed automatically,
Reading
and an error occurs for
the instruction that is
executed later.
Writing
Exclusive Perform
control is exclusive
Reading
not control.
required.
Perform exclusive con-
Writing trol.
Exclusive Perform
control is exclusive
Reading
not control.
required.
Writing Perform exclusive control.
First access
File Operations from
*1
the Sysmac Studio
Writing Reading Writing
Exclusive Perform
control is exclusive
not control.
required.
Perform
exclusive
control.
--- ---
--- ---
Exclusive Perform
control is exclusive
not control.
required.
10 FTP Server
FTP server
Reading Writing
Exclusive Perform
control is exclusive
not control.
required.
Perform
exclusive
control.
Exclusive
control is
not
required.
Perform
exclusive
control.
--- ---
--- ---
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