USER MANUAL 1.10 | DC1000 DIALOG-CONTROLLER
Berghof Automation GmbH | Harretstrasse 1 | 72800 Eningen | www.berghof.com
DC1000_HB_en_2D0982010ZD00.docx | 2VF100107FE10.docx
50
X2 pin assignment
X2
RJ45
1
TX+
2
TX-
3
RX+
4
75
Ω
5
75
Ω
6
RX-
7
75
Ω
8
75
Ω
“LNK” LED
green
ON
– operational
“RCV” LED
green
FLASHING
– data receive
2.10.4. USB
Devices equipped with USB interfaces can be connected to the two USB master ports (Rev. 1.1). The USB on
the back (X3) and the front USB (under the IP65 cover) are connected via an internal USB hub. The only USB
devices classes which can be employed for CODESYS users are USB sticks. A mouse can only be employed at
the Linux level. The following points must be taken into consideration when USB sticks are employed:
CAUTION
An USB stick may only be pulled during operation if all file operations
have been completed, otherwise the USB stick may become unusable!
If programs still have files open, the directory will no longer be able to be re-
moved once the USB stick has been pulled. In this situation file or directory op-
erations will result in blockages because information is to be read from a
device that is no longer available in the system. Therefore, always make sure
that no program still has open files in the USB stick before pulling the stick.
USB memory sticks with FAT/FAT32 formatting are supported.
USB memory sticks can be inserted and pulled during operation. The inserted device is automatically
detected and mounted in the /media/usbX directory. When the USB stick is pulled, the associated
/media/usbX directory automatically “disappears” provided no program is currently accessing it (see
above).
Either the first partition or, if there are no partitions, the entire memory will be mounted on the
memory stick, in other words, the associated directory appears automatically.
The first stick is mounted under /media/usb0, the second under /media/usb1, and so on. A maximum
of 8 sticks may be inserted simultaneously (/media/usb[0-7]). If a new (or previously inserted, then
pulled) stick is inserted it will be placed on the directory with the lowest number. Connecting a USB
hub allows multiple sticks to be operated at a given USB interface. Care must be taken that no USB
devices are still inserted in the hub when the hub is itself inserted or pulled.
Based on the variety and number of available USB chip and USB drive manufactures, there is no guar-
antee that every available USB drive on the market works with the device. Every USB drive has to be