II - DCE FEL ČVUT v Praze

HART transfer area
HCF
I
Interrupt
I/O bus
Isolated
K
KEMA
L
Load power pack
I/O Modules with Intrinsically-Safe Signals
C79000-G7076-C152-04
Area of data records which is provided for writing HART commands and
reading HART responses. The HART transfer area consists of data records.
Each client is allocated its own area of data records, via which the
server and it can exchange data.
HART Communication Foundation
The operating system of the CPU has 10 different priority classes which
control execution of the user program. These priority classes include
interrupts, for example, hardware interrupts. When an interrupt occurs, the
operating system automatically calls a corresponding organization block
where the user can program the reaction desired.
Part of the S7-300 backplane bus in the automation system; it is
optimally designed for fast signal exchanges between the IM 153 and the
signal modules. Both user data (e.g. the digital input signals of a signal
module) and system data (e.g. the default parameter records of a signal
module) are transferred on the I/O bus.
In isolated input/output modules, the reference potentials of the control
circuit and the load circuit are galvanically isolated from one another, for
example by means of optocouplers, relay contacts, or transformers. The
input/output circuits can be connected to a common potential.
Product Certification Center.
Power supply for the signal and function modules and the process I/O
connected to them.
Glossary
Glossary-7