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Drive name and
user group for USB
device
1898
You can define the drive name and the authorized user group for USB devices.
This requires that USBMOUNTS = <path\file> is entered in OEM.SYS. This entry
refers to a file containing one or more lines with the following syntax:
<Volume>,<Mountpoint:>,<User>
Example of entry in the file that is referred to, e.g. Stickconfig.a:
KINGSTON,PLCSTICK:,OEM
If the control detects a USB device during startup (only if it was switched on
with the main switch), which has a VFAT partition with one of the specified
volume names, the device is mounted and displayed with the name specified
in <Mountpoint:>, and not with the name USBn:.
If the device also has other partitions, the other partitions are ignored except
if they are also mounted with a volume name.
If a USB device with one of the indicated volume names is connected after the
control has started up, the device is mounted with the name USBn: as usual.
The new functionality does not become effective until the control is switched
off and then back on again.
The following settings can be defined in any ASCII file (e.g. Stickconfig.a):
<Volume>
Volume name of a USB device formatted with VFAT. If the name contains
blank spaces, the complete name must be enclosed between quotation
marks (" "). Also, the name must always be given in capital letters.
<Mountpoint>
Drive name under which the USB device is to be mounted (e.g. PLCSTICK:).
The last character of the name must be a colon. The name can have up to 8
characters (without colon).
<User>
User group for which the USB device is mounted and displayed. The
following user groups are possible:
• TNC:
The USB device can be used by the machine operator.
• OEM:
The USB device can only be used by the OEM (code number 807667,
PLC program, NC cycles).
• SYS:
The USB device can only be used by the HeROS system.
Connecting more than one USB device with the same volume name may
cause problems. When the control is started up, the first detected USB device
with the new drive name is mounted. As a result, it may occur that each time
the control is started up, another device with the same volume name is
mounted.
HEIDENHAIN therefore recommends using unique volume names that cannot
be confused (e.g. "JHK247G4"). On a PC with Windows operating system, the
volume name can be defined in the properties of the USB device.
HEIDENHAIN Technical Manual iTNC 530 HSCI
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