Siemens SIMATIC S7-1500 System Manual page 368

Glossary
Bus cable connector
Physical connection between the bus node and the bus cable.
Code block
In SIMATIC S7, a code block is a block that contains a section of the STEP 7 user program. (in
contrast to a data block, which contains only data)
Configuration
Systematic arrangement of the individual modules (configuration).
Connection plug
Physical connection between device and cable.
Consistent data
Data whose content belongs together and must not be separated is known as consistent
data.
Control Unit
Converter component with automatic speed control function (e.g. CU320-2). With SIMOTION
D, SINUMERIK NCUs and the SIMATIC Drive Controller, the Control Unit and controller are
combined in one device as SINAMICS Integrated.
Controller extension
This component scales the number of drive controls in SIMOTION D4x5-2.
Counter
Counters are components of the system memory of the CPU. You can modify the content of
the "counter cells" using STEP 7 instructions (e.g. count up/down).
CPU
The CPU contains the operating system and executes the user program. The user program is
located on the SIMATIC Memory Card and is processed in the work memory of the CPU. The
PROFINET interfaces on the CPU allow simultaneous communication with PROFINET devices,
PROFINET controllers, HMI devices, programming devices, other controllers and other
systems. The S7-1500 CPUs support operation as an IO controller and I-device. Similarly to
the PROFINET interface, the PROFIBUS interface available on some of the S7-1500 CPUs
allows communication with other devices. When the interface is used as PROFIBUS DP
interface, the CPU on the PROFIBUS DP also assumes the role of a DP master.
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SIMATIC Drive Controller
System Manual, 11/2023, A5E46600094-AD