Siemens SIMATIC ET 200pro Operating Instructions Manual page 143

Glossary
Actuator
Actuators are, for example, power relays or contactors for switching on load devices or load
devices themselves (e.g. directly controlled solenoid valves).
Automation system
Programmable logic controller for closed-loop and open-loop control of process chains in
industrial processes and manufacturing technology. The automation system consists of
different components and integrated system functions according to the automation task.
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
Shared transmission path to which all devices in a fieldbus system are connected.
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 code block, a data block only contains data.
Configuration
Assignment of modules to slots and addresses.
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).
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CPU 1516pro-2 PN (6ES7516-2PN00-0AB0)
Operating Instructions, 11/2019, A5E35873416-AC