Programming instructions

7
USB
The universal serial bus (USB) is a
serial bus system for connection
of a computer to external devices.
Devices or storage media equipped
with USB can be connected in run-
ning operation, and connected
devices and their characteristics
automatically detected.
Vario bus
Various different input and control
units can be connected to the Vario
bus. It comprises 4 cores. The infor-
mation on the Vario bus is trans-
mitted via the RS485 protocol.
Web browser
Software for the display and indi-
cation of Internet pages or corre-
sponding conguration pages. e.g.
Internet Explorer or Firefox.