16 communication via mpi

7/29/2019 16 Communication via MPI

1/18

Date: 24.09.2013File: PRO1_16E.1

SIMATIC S7Siemens AG 1999. All rights reserved.

Information and Training Center

Knowledge for Automation

Communication via MPI

PG 720


2/18

Date: 24.09.2013File: PRO1_16E.2




Networking via MPI

PLC link via MPI

S7-300 or S7- 400

PG connection via MPI

OP connection via MPI

CPU 1 CPU 2

PG 720

S7-300 or S7- 400

0

1

2

n Default MPI address


3/18

Date: 24.09.2013File: PRO1_16E.3




Connection Options to MPI

Bus connector

Connection forPG/HMI

To MPIinterfaceofCPU

To MPIinterfaceofCPU

Switch for terminating

resistor


4/18

Date: 24.09.2013File: PRO1_16E.4




Global Data: Overview

Global Data

CPU 1MW 10

CPU 2MW 20

CPU 3MW 30


5/18

Date: 24.09.2013File: PRO1_16E.5




2

GD CirclesCPU1 CPU2 CPU3 CPU4 CPU5

GD circle

1

3

4

5

6

S=Sender; R=Receiver; GD x.y=GD Packet y in global data circle x

S GD 1.1

R GD 1.2

R GD 1.1

S GD 1.2

R GD 2.1 S GD 2.1 R GD 2.1 R GD 2.1 R GD 2.1

S GD 3.1R GD 3.2

R GD 3.1

S GD 3.2

R GD 4.1 S GD 4.1 R GD 4.1

S GD 5.1 R GD 5.1 R GD 5.1

R GD 6.1 S GD 6.1 R GD 6.1


6/18

Date: 24.09.2013File: PRO1_16E.6




Global Data: Configuration Procedure

Create hardware stations in a project

with the "SIMATIC Manager"

Create and download configuration data (MPI address)for the individual CPUs

with the "HW Config" tool

Configure Global Data table

with the "Defining Global Data" tool


7/18

Date: 24.09.2013File: PRO1_16E.7




Global Data: Configuring the Hardware

Set MPI address

Network CPUs"Accessible Nodes"

Create stations


8/18

Date: 24.09.2013File: PRO1_16E.8




Editing the GD Table

Define Global Data

Open GD Table

Select CPUs

Replication factor


9/18

Date: 24.09.2013File: PRO1_16E.9




Compiling the GD Table

Compile GD Table

Define scan rates andstatus information


10/18

Date: 24.09.2013File: PRO1_16E.10




Downloading GD Configuration Data

Download GD configuration data


11/18

Date: 24.09.2013File: PRO1_16E.11




Range length errorin sender

Status of GD Communication

MB 1207 6 5 4 5 4 3 2 1 0

MB 121

MD 120

7 6 5 4 3 2 1 0MB 122

6 5 4 3 2 1MB 123

7 0

DB does not existin sender

GD packet lost

Syntax error in GD packet

GD object missing in GD packet

GD objects in sender and receiverare not the same length

Range length error in receiver

DB does not exist in receiver

Sender has performed a restartReceiver has received new data

0


12/18

Date: 24.09.2013File: PRO1_16E.12




Exercise: Preparing for Communication

Training Area 2

PG740

SIEMENS Node No.:.......

Station 2

CPU-MPI address: .............

PG740

SIEMENS Node No.:....... Station 1

CPU-MPI address: .............

Training Area 1


13/18

Date: 24.09.2013File: PRO1_16E.13




Exercise: Configuring Global Data Communication

Station PLC1 Station PLC2

0 8 1 50 8 1 5

4 7 1 1 4 7 1 1


14/18

Date: 24.09.2013File: PRO1_16E.14




Exercise: Monitoring Variables in Several Stations


15/18

Date: 24.09.2013File: PRO1_16E.15




Transferring Global Data with SFC 60, 61


16/18

Date: 24.09.2013File: PRO1_16E.16




Configuring with NETPRO

Insert hardware stations

Define global data


17/18

Date: 24.09.2013File: PRO1_16E.17




Subnets in SIMATIC

-SINUMERIK, RCM-TI 505-Other PLC

S7-300S7-400 M7-400

OPs

SIMATIC S5

PROFIBUS-DP

ET 200B/LET 200C

DP/AS-I link

ASI (Actuator Sensor Interface)

AS-Isubmodules

Sensors and ActuatorsField device with AS-I ASIC

AS-I power supply

Industrial Ethernet

PROFIBUS

MPI network

Point-to-Point

PCs, OS PGs

PG720

Cell level

Field level

AS-Ilevel


18/18

Date: 24.09.2013File: PRO1_16E.18




Event-driven

viaMPI, Profibusor IndustrialEthernet

Event-driven

via

MPI or K-Bus

S7 Communication Methods

Global Data

Basic communication( non-configured connection )

Extended communication(configured connection )

SFC SFC SFB SFB

Op. Sys.of CPU

Op. Sys.of CPU

cyclic or event-driven

via MPI

16 communication via mpi

Documents