WAGO I/O-SYSTEM 750 Manual page 209

WAGO-I/O-SYSTEM 750
®
750-644 Bluetooth RF-Transceiver
Piconet
A Bluetooth
Communication may run directly and bi-directionally between master and slaves.
However, communication between slaves is only possible indirectly through the
master.
PIN
(Personal Identification Number)
The PIN is used to authenticate Bluetooth
basis for encryption.
See also "Password"
PLC
(Programmable Logic Controller)
A PLC is a device used to control a machine or system and is programmed on a
digital basis, such as a WAGO fieldbus controller.
Port
A port is an internal or external interface.
Process image mapping
Subdivision of a process image into independent parts and allocation of these
parts to specific slots for data transmission.
Process Data
Process data lays within certain (established) areas of the memory and can be sent
or received, for example, from the physical process of a control. The entirety of
the process data forms the process image on the control level.
Q
QoS
(Quality-of-Service)
Quality of a communication service from the view of the user. The user can define
his or her requirements regarding the communication service through the QoS.
R
Real-time capability
Devices have real-time capability if their time behavior is deterministic; i.e., the
observations of guaranteed maximum times in each operating condition and the
notification of timeouts as errors. For example, a device has real-time capability
with regard to data exchange if a maximum delay for the transmission of data
packets is never exceeded and errors or disturbances that occur are reported to the
next higher entity.
Manual
Version 2.0.0, valid from FW/HW Version 03/03
®
network consisting of a master and up to 7 slaves is called a piconet.
®
devices with one another, acting as the
Glossary 209