Glossary - Siemens SIMATIC S7-1500 System Manual

Glossary

Automation system
Programmable logic controller for the closed-loop and open-loop control of process chains in
the process engineering industry and manufacturing technology. The automation system
consists of different components and integrated system functions according to the
automation task.
Baud rate
Data transmission rate indicates the number of bits transmitted per second (baud rate = bit
rate).
Bit memory
Bit memory is a component of the system memory of the CPU for saving intermediate
results. It can be accessed in bit, byte, word or double word mode.
Bus
A common transfer route to which all nodes of a field bus system are connected; it has two
defined ends.
Bus cable connector
Physical connection between the bus node and the bus cable.
Bus, s elf-assembling
The modules are lined up on the mounting rail, and are mechanically and electrically
connected to each other with a U connector as they are swiveled into position. In this way
the bus is extended with each module.
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).
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Automation system
System Manual, 09/2016, A5E03461182-AD