Siemens SIMATIC CP 340 - Page 193

Glossary
PtP coupling and configuration of CP 340
Manual, 04/2011, A5E00369892-03
193
Diagnostics functions
The diagnostic functions cover the entire system diagnostics and include the recognition,
interpretation and reporting of errors within the Programmable Controller.
Function blocks (FBs)
Function blocks are components of the user program and are, according to IEC standard,
"blocks with memory". The memory for the function blocks is an allocated data block, the
"instance data block". Function blocks can be parameterized, i.e. you can use them with and
without parameters.
Hardware
Hardware is the entire physical and technical equipment of a programmable controller.
Instance data block
The instance data block is a block allocated to a function block, which contains data for this
special function block.
Interrupt
Interrupt is a term that designates the interruption of the processing of a program in the
processor of a programmable controller by an external alarm
Loading from PC
Downloading of load objects (e.g. code blocks) from the programming device into the load
memory of the central processing unit (CPU).
Loading in the programming device
Uploading of load objects (e.g. code blocks) from the load memory of the central processing
unit into the programming device.
Module
Modules are pluggable PCBs for programmable controllers.
Module parameters
Module parameters are values with which the behavior of the module can be set. There are
two different types of module parameters: static and dynamic.
Mounting rack
The mounting rack is the rail containing the slots for the modules.