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3 terminology used, Terminology used, 1about this documentation – Lenze Controller-based Automation User Manual

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About this documentation

1.3

Terminology used

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Lenze · Controller-based Automation - Visualisation · System Manual · DMS 1.5 EN · 04/2014 · TD17

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1.3

Terminology used

Term

Meaning

Controller

The Industrial PC (IPC) or controller is the central component of the automation

system which controls the Logic and Motion functionalities by means of the

runtime software.

The controller communicates with the field devices via the fieldbus.

IPC

Engineering PC

The Engineering PC and the Engineering tools installed serve to configure and

parameterise the system "Controller-based Automation".

The Engineering PC communicates with the controller via Ethernet.

Fieldbus node

Devices integrated in the bus system as, for instance, Controller and inverter

Field device
HMI

Human Machine Interface (HMI) is a synonym for MMI (Man - Machine -

Interface). The term stands for the user interface of a machine.

Via the HMI, the operator can operate the machine, monitor system states, and,

if necessary, intervene in the process. Information is either provided by means of

hardware via operator panels with signal lamps, display fields, and buttons, or,

by means of software, via a visualisation system running on a terminal.

The HMI communicates with the machine PLC via different communication

paths.

Simplified description of the exchange of information:

operator <-> HMI <-> machine

In this context, the term Supervisory Control And Data Acquisition (

SCADA

) is

often used.

Inverter

Generic term for Lenze frequency inverter, servo inverter

MPI

The multi-point interface is used for connecting programming units, operator

panels, and other SIMATIC-S7 devices. The MPI is based on the EIA-485 standard

(formerly RS-485) and operates at a baud rate of 187.5 kbps - 12 Mbps.

The voltage supply gets the interface from the control system via the MPI line.

The interface is hardware-compatible with the Profibus interface on Siemens

control systems.

Different manufacturers offer PCI plug-in cards, PCMCIA plug-in cards, USB

adapters, or Ethernet adapters for communication via MPI. All S7 stations can be

interconnected via the MPI bus.

The MPI bus is not standardised, but a Siemens-specific bus. The multi-point

interface is a communication interface integrated in every SIMATIC®-S7

automation device (SIMATIC® S7/M7, and C7). It can be easily used for simple

networks.

OPC tunnel

OPC tunnel ( 60)

PLC

Programmable Logic Controller

SCADA

Supervisory Control And Data Acquisition (SCADA)

• A SCADA system is a process visualisation or host system on which several

machines or lines are interconnected.

• Central alarm management, archiving of data, the creation of time control

software programs, and a messaging service (SMS, e-mail, text-to-speech)

are typical of a SCADA system.

HMI ( 8)

PLC

Programmable Logic Controller (PLC)

Bus systems
CAN

CAN (Controller Area Network) is an asynchronous, serial fieldbus system.