User Manual

222 • Glossary
WAGO-I/O-SYSTEM 750
I/O Modules
PI
The process image (PI) is an area of the memory in which the process data
for and from modules/couplers/controllers is stored. The allocation and
meaning of the process data are module-/fieldbus-specific.
Piconet
A Bluetooth
®
network consisting of a master and up to seven slaves is called
a piconet. Communication may run directly and bi-directionally between
master and slaves; however, communication between slaves is only possible
indirectly through the master.
PII
Process image of the input data (PII). Example: Status 0 or 1 of a digital in-
put.
PIN
For this module: The "Personal Identification Number" (PIN) is a piece of
authentication information created via user-selected password. The PIN is
used for machine processing, the password for user interaction.
See also "Password"
PIO
Process image of the outputs data (PIO). Example: Value requirement for
generating a voltage of 24 volts.
Point-to-point
"Point-to-point" refers to the simplest form of a network - the communica-
tion between two participants.
Port
A port is an internal or external interface.
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.