WAGO I/O-SYSTEM 750 Manual page 224

224 • Glossary
Register communication
Via register communication, an acyclic interface to the parameterization and
configuration data of an I/O module with 1 byte of protocol information and
2 bytes of data (64 addressable data sets) is configured. In register commu-
nication, process data is not exchanged and the mailbox is masked.
Remote
See "Remote device"
Remote device
A device that is not connected through a local interface (such as the field-
bus); rather, the connection is wireless only. The physical distance can range
from centimeters to kilometers.
Return value
A return value is returned after the execution of a function or a confirmed
service. It contains, for example, a performance result.
RSSI
The RSSI (Received Signal Strength Indication) is an algorithm for deter-
mining the signal strength between wireless participants. RSSI values allow,
for example, the diagnosis of distances between wirelessly connected de-
vices that are too small or too large. RSSI values are measured over a certain
time span and can be derived from an existing communication. They range
from 0 to 106.
S
Scan
See "Inquiry"
Sequence diagram
Sequence diagrams are defined using the "Unified Modeling Language"
(UML). They illustrate interactions/behavior/events in chronological se-
quence on a timeline.
WAGO-I/O-SYSTEM 750
I/O Modules