Usb Support; Sd Memory Card Support - Digi TransPort WR31 User Manual

Device administration

USB support

Most TransPort routers are equipped with USB ports that you can use to connect Mass Storage
Devices (MSDs) such as external hard drives or flash-memory pen drives. All the files on the USB
device are listed under the USB Directory Listing heading on the Administration > File
Management > FLASH Directory page.
The USB storage device must be formatted using the FAT16 or FAT32 file system.
WARNING!
When the USB storage device is first inserted into the router, the operating system looks for a file
named autoexec.bat, and if found, executes it. To execute other batch files, press the Reset button
one or more times. The batch file to execute must be called pb<n>.bat, where <n> is the number of
times the Reset button must be pressed to execute the file.

SD memory card support

Some TransPort routers are available with internal SD memory card. The drive letter assigned to
this card is s:. To access the SD memory using an FTP client, the subdirectory assigned is sdmmc.
You can use the SD card in the same way as USB MSDs. The SD card is internal and cannot be
removed.
Batch control commands
Batch files can contain one of the following two control lines: ERROR_EXIT or ERROR_RUN.
ERROR_EXIT causes any commands run after that point in the file to terminate the batch file if that
command causes an error; for example, attempting to delete a file that does not exist. ERROR_RUN
returns the operation to default, which is to continue executing batch file commands.
USB filing system commands
The USB storage device responds to any of the standard filing system commands. For all filing
system commands, the USB storage device is regarded as drive u:.
Note The router does not support subdirectories. Any subdirectories on the USB device display
with a size of 0 bytes on the Administration > File Management > FLASH Directory page.
Example 1:
To display the contents of the USB storage device, enter the command:
dir u:
SERIALS.TXT 1843
EVENTL~1.TXT 1449
USB.TXT 4278
MASSR1~1.TXT 1255
OK
If the USB storage device is empty, the following message is displayed:
No files
If no USB device is present, the following message is displayed:
No USB flash directory
Digi TransPort WR Routers User Guide
For the TransPort WR31, the USB port is for use in a normal location only, not a
hazardous location.
Manage files
822