Siemens SIMATIC S7-1500 System Manual page 257
Automation system
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Also See for SIMATIC S7-1500:
- System manual (523 pages) ,
- Function manual (402 pages) ,
- Manual (188 pages)
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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.
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 uses the integrated system power supply to supply the electronics of the modules
via the backplane bus. The CPU contains the operating system and executes the user
program. The user program is located on the SIMATICmemory 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.
Crimping
Procedure whereby two components joined together, e.g. wire end sleeve and cable, are
connected with one another through plastic strain.
Cycle time
The cycle time represents the time a CPU requires to execute the user program once.
Cyclic interrupt
see "Interrupt, cyclic"
Data block
Data blocks (DBs) are data areas in the user program that contain user data. There are
global data blocks, which can be accessed from all code blocks, and instance data blocks,
which are assigned to a specific FB call.
Device
A device can send, receive or amplify data via the bus, e.g. IO device via PROFINET IO.
Automation system
System Manual, 09/2016, A5E03461182-AD
Glossary
257
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