WAGO-I/O-SYSTEM 750
Glossary
67
750-921
Bluetooth
®
Adapter
Manual
Version 2.0.1, applicable from FW Version 02
Glossary
A
AFH
(
A
daptive
F
requency
H
opping)
The adaptive frequency hopping process is used to temporarily skip faulted or
occupied sections of the total available frequency band and use other channels.
ASCII
(
A
merican
S
tandard
C
ode for
I
nformation
I
nterchange)
The basis for character set coding. Character encoding defines 128 characters,
consisting of 33 non-printable and 95 printable characters. Each character is
assigned a bit pattern consisting of 7 bits. Since each bit can have two values, a
total of 2
7
(= 128) different bit patterns exist, which can be interpreted as whole
numbers 0–127 (hexadecimal 00–7F).
AT Command
Command for configuring and parameterization of a module. The letters “AT”
here stand for “attention.”
AT Command Interface
Besides enabling modification of the configuration, this interface can also be used
for exporting of status and diagnostics information and text output of contextual
Help texts.
Authentication
Authentication is a process for testing the identity transmitted by a
communication partner.
B
Baud rate
Maximum number of changes to the signal status for a serial interface per second,
measured in “Baud.” The baud rate value is equal to the frequency of the clock
signal for synchronous, serial interfaces.
Bluetooth
®
Industry standard according to IEEE 802.15.1 for data radio transmission between
devices over short distances. This includes non-connected and connected point-to-
point transmission and so-called piconetworks.
Bluetooth
®
provides an interface
through which both mobile miniature devices such as mobile phones and PDAs
and computers and peripheral devices can communicate with one another. The
main purpose behind
Bluetooth
®
is to do away with the need for wired
connections between devices.