Siemens SIMATIC S7 Manual page 57

Glossary
A
Address
Automation System
B
Baud Rate
Block Call
Block Parameter
Blocks
Bus Segment
C
Client
Communications Processor
Configuration
Connection Parameterization The specification of a connection ID in the system function block. With
CP
MODBUS / TCP communication via the integrated PN interface of the CPU
2XV9450-1MB02; Manual edition 2.1
The address identifies a physical storage location. If the address is
known, the operand stored there can be directly accessed.
An automation system is a programmable logic controller that contains
at least a PLC, different input and output devices as well as HMI
devices.
- > transmission rate
A block call occurs when program processing branches to the called
block
Block parameters are variables within multiple-use blocks, which are
replaced with actual values when the relevant block is called.
Blocks are elements of the user program which are defined by their
function, structure, or purpose. With STEP7 there are
•
Code blocks (FB, FC, OB, SFB, SFC)
•
Data blocks (DB, SDB)
•
User-defined data types (UDT)
Part of a -> subnet. Subnets can consist of bus segments and
connectivity devices such as repeaters and bridges. Segments are
transparent for addressing.
A client is a device or, in general terms, an object that requests a
service from a -> server.
Communications processors are modules for point-to-point connections
and bus connections.
The configuration is the set up of individual modules of the PLC in the
configuration table.
the help of a connection ID the system function blocks can
communicate between two communication points.
Communications Processor. Module for communications tasks.
Glossary - 1