Glossary-3
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C621-01
The C7 OP handles the OP functions of the C7. It is independent of the –>
C7 CPU and continues to operate if, for example, the C7 CPU changes to the
STOP mode. The C7 OP has its own MPI address and is connected to the C7
CPU via the MPI.
Chassis ground includes all connected inactive parts of a device that cannot
carry a hazardous voltage even in the event of a fault.
Communications processors are modules for point-to-point links and for
LAN connections –> CP.
When a C7 CPU is restarted (for example, after selection of one of the C7
CPU Operating Modes in the System Functions menu or after turning the
power ON), the organization block OB100 (complete restart) is executed
before cyclic program execution (OB1). During the complete restart, the
process image of the inputs is read in and the STEP 7 user program is
executed starting at the first instruction in OB1.
Assignment of modules to racks/slots and (for example, in the case of signal
modules) addresses.
The configuration memory is a flash memory containing the configuration
data and is integrated in the C7 OP.
Communications processors (CPs) are intelligent modules with their own
processor. They form an important group within the components of a
programmable controller. A distinction is made between various types of
communications processors depending on their tasks, for example, CPs for
signaling and logging, for point-to-point connections, for the operator
interface (COROS), for bus connections (SMATIC NET) and for diagnostics
and mass storage applications.
A cyclic interrupt is generated periodically by the C7 CPU at selected
intervals. It triggers execution of the assigned organization block.
D
The diagnostic buffer is a buffered memory area on the C7 CPU in which
diagnostic events are entered in the order in which they occur.
C7 OP
Chassis
Communications
Processor
Complete Restart
Configuration
Configuration
Memory
CP
Cyclic Interrupt
Diagnostic Buffer
Glossary
Содержание simatic c7-621
Страница 44: ...2 26 C7 621 C7 621 AS i Control Systems C79000 G7076 C621 01 Installing and Preparing the C7 ...
Страница 64: ...3 20 C7 621 C7 621 AS i Control Systems C79000 G7076 C621 01 Configuring an MPI Network ...
Страница 74: ...5 4 C7 621 C7 621 AS i Control Systems C79000 G7076 C621 01 Attaching a C7 621 AS i ...
Страница 82: ...6 8 C7 621 C7 621 AS i Control Systems C79000 G7076 C621 01 C7 621 Digital I Os ...
Страница 100: ...7 18 C7 621 C7 621 AS i Control Systems C79000 G7076 C621 01 C7 621 Analog I Os ...
Страница 101: ...8 1 C7 621 C7 621 AS i Control Systems C79000 G7076 C621 01 Maintenance 8 ...
Страница 110: ...A 8 C7 621 C7 621 AS i Control Systems C79000 G7076 C621 01 General Technical Specifications ...
Страница 123: ...Glossary 1 C7 621 C7 621 AS i Control Systems C79000 G7076 C621 01 Glossary ...
Страница 136: ...Index 4 C7 621 C7 621 AS i Control Systems C79000 G7076 C621 01 Index ...