Siemens simatic c7-621 Hardware Installation Manual page 126

Glossary
Diagnostic Event Diagnostics events include errors in a digital function in the C7, system
errors in the C7 caused, for example, by programming errors or operating
mode transitions.
Diagnostic
The diagnostic functions cover the entire system diagnostics and include the
Functions
detection, evaluation and signaling of errors/faults within the C7.
Diagnostic Modules with diagnostic capability signal detected system errors to the –>
Interrupt C7 CPU using diagnostics interrupts.
Diagnostics
E
Equipotential Electrical connection (equipotential bonding conductor) that keeps the bodies
Bonding
of electrical devices to the same or approximately the same potential as
extraneous conducting bodies to prevent interference or hazardous voltages
arising between the bodies.
Error Display
Error display is one of the possible responses of the operating system to
runtime errors. The other possible responses are: Error response in the user
program, STOP status of the C7 CPU.
F
Flash EPROM
FEPROMs correspond in their function to the electrically erasable EEPROMs
but they can be erased much faster (FEPROM = flash erasable programmable
read-only memory)
The following data can be stored in a flash EPROM safe from power failure:
Flash Memory
–> Flash EPROM
Glossary-4
Diagnostic functions, System diagnostics
The –> user program
The –> parameters that determine the behavior of the –> C7 CPU and the
I/O functions of the C7.
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C621-01