Files - Mitsubishi Electric MELSEC Q Series User Manual
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Also See for MELSEC Q Series:
- User manual (834 pages) ,
- Reference manual (674 pages) ,
- Programming manual (624 pages)
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18.2.4
Files
(1) Files configuration
Folder and file configuration of the C Controller module is described below:
Drive
Folder
/SYSTEMROM
OS_IMAGEFILE
/ROM
*2
Arbitrary
/RAM
/SD
*4
/USB0
*1 :
The last part of the file name "XXXXX-Y" indicates the upper five digits of the serial number and function version.
*2 :
Specify when creating RAM disk in user program.
*3 :
A "/SD" drive is created when an SD memory card is inserted (mounted) into the SD memory card installation slot.
*4 :
When connecting multiple USB Mass Storage compliant devices, up to 5 devices can be connected and the second and subsequent
devices will be "/USB0:2","USB0:3". If the drive is partitioned, the second and subsequent partitions are "/USB0:2", "/USB0:3" and so
on.
*5 :
A "/USB0" drive is created when a USB device is connected (mounted) into the USB connector (USB1).
● Characters that can be used in file and directory names are as follows:
• Single-byte alphanumeric characters
• Single-byte special characters (excluding \ / * ? < > | : " )
● If wrong characters are used, the following symptoms may occur:
• Garbled file and directory names
• File name and directory loss
(2) Precautions for file operations
This section describes the operations and precautions of memories and drives of the C Controller module.
(a) File writing
Before writing files by FTP and Telnet, etc. during user program operations, make sure that the file(s) to write
will not affect the running user program.
(b) File writing destination
Do not use the user program to write into the standard ROM.
As the write count of the standard ROM is limited, doing so will reduce the operation life of the C Controller
module. If files are to be written from the user program frequently, write files into the RAM disc, standard RAM,
SD memory card, USB device and network device
*1 :
For details, refer to the manual for VxWorks.
(c) Access to the same file
Files being written are not accessible.
Files being accessed are not writable.
File
prjParams.h
*1
Q24DHCCPU-VG_XXXXX-Y
: Access allowed/Valid, : Access not allowed/Invalid
Overview
System ROM
VxWorks component list
VxWorks image storage folder
VxWorks image file
(Page 343, Section 19.5)
Standard ROM
Work RAM
Standard RAM
SD memory card
USB device
*1
(via FTP/NFS/netDrv), etc.
CHAPTER 18 MEMORIES AND FILES
FTP
Factory
After
access
setting
initialization
*3
*5
325
18
*3
*5
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Troubleshooting
