From OpenSCADAWiki
The address of the disk to write the ISO-image is "/dev/sd{x}" and you can found it by calling the dmesg console command immediately after connecting the target USB-Flash disk. From the Linux environment, an ISO-image can be written as follows:
# Recording an ISO-image to USB-Flash:
dd if=Debian_9-OpenSCADA_0.9.0-TDE_R14-amd64-LiveCD_USB.iso of=/dev/sd{x} bs=4096
# Recording an ISO-image directly from the loaded CD/DVD live disk:
dd if=/dev/sr0 of=/dev/sd{x} bs=4096