Siemens OPC UA User manual

Unrestricted © Siemens 2020

siemens.com/simatic-s7-opcuaUnrestricted © Siemens 2020

OPC UA for S7-1500 and S7-1200

Unrestricted © Siemens 2020

• Founded 1996 (OPC Classic specification) ,OPC UA specification release 2009

• More than 450 members from all areas

OPC UA at a glance
OPC Foundation

ABB Automation GmbH

ascolab GmbH

Beckhoff Automation GmbH

Bosch Rexroth AG

Bosch Software Innovations GmbH

Bundesamt für Sicherheit in der Informationstechnik (BSI)

CERN

Cisco Systems

Emerson Process Management

Endress+Hauser Process Solutions AG

FANUC CORPORATION

Festo AG & Co. KG

Fraunhofer IOSB

Hilscher Gesellschaft für Systemautomation mbH

HMS Industrial Networks

Honeywell Inc

IBM

PHOENIX CONTACT

Pilz GmbH & Co. KG

SAP AG

ProSoft Technology

Rockwell Automation

Schneider Electric

Siemens AG

Softing Industrial

Yokogawa Electric Corporation

Unified Automation GmbH

Microsoft Corporation

B&R

GE

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OPC UA at a glance
Cooperations

Page 3

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North-South Alignment
Strategic alignment of OPC UA and PROFINET

SCADA, DCS

MES, ERP

Cloud

North

South

V15.1

OPC UA

PROFINET

Energy

management

SCADA-

System

Engineering-

Framework

Manufacturing Execution System

HMI

IPC

Industrial

Communication

Motion
Control

CNCController

Power supply

and

distribution

Industrial

Identification

Decentral IO

Drives Industrial

controllers

PROFINET

OPC UA

Industrial Ethernet

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OPC UA Data Access Client (SIMATIC S7-1500)
Customer use cases

Vertical Line Integration: e.g. MES, SCADA

Industry Standard Support

Companion
Specifications
& Methods

Method

Object

Variable

Variable – Property

Machine

PLC

Machine

Machine

PLC

OPC UA

Server S7­1500

OPC UA
Client

OPC UA

Client

Page 5

OPC UA
Server S7­1200

Inbuilt server
interface

building

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S7-1500 OPC UA Server

Browsing of
SPS-Data

Browse Response

Browse Request

Acyclic access to
data

R/W Response

R/W Request

High performance
with repeated
acyclic access

R/W Response

R/W Request

Node Handles

Registering

Nodes

Load reduction for
HMI / monitoring
applications

Publishing

Consistent data transfer
through function call
(no handshakes)

Call Response ( )

Call Request ( )

Information
modeling

Browsing

Read/Write

Registered

Read/Write

Subscription Methods

Companion
Specifications

Client Client Client Client Client Client

Server Server Server Server Server Server

Sampling

Page 6

S7-1500 S7-1200

*: Only for user modelled

interfaces

S7-1500 S7-1200

S7-1500 S7-1200

S7-1500 S7-1200

S7-1500 S7-1200

S7-1500 S7-1200

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OPC UA Server for SIMATIC S7-1500 based CPUs
Functional scope

Browse

• Browsing of PLC Data

• Dynamic adaptation of the client configuration to the data provided by a server

OPC UA

server

Browse

Browse request

Node ID = 84 (root folder), BrowseDirection = forward

Browse response

Node ID, browse name, display name, node class, type def

Page 7

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OPC UA Server for SIMATIC S7-1500 based CPUs
Functional scope

Read

• Symbolic read access to PLC data

OPC UA

server

Data access

Read request

Node ID = "DB1"."myArray“

Read response

Value = “11110000”, Timestamp = 10/29/2018 3:15pm, Status = Good

1111

0000

DB1.myArray

1111
0000

DB1.myArray

1111

1111

DB1.myArray

Page 8

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OPC UA Server for SIMATIC S7-1500 based CPUs
Functional scope

• Symbolic write access to PLC data

Page 9

Write

OPC UA

server

Write request

Node ID = "DB1"."myArray“, Value = “11111111”,

Write response

Status = Good

1111

0000

DB1.myArray

1111
1111

DB1.myArray

1111

1111

DB1.myArray

1111
1111

DB1.myArray

✓

Data access

Unrestricted © Siemens 2020

OPC UA Server for SIMATIC S7-1500 based CPUs
Functional scope

Registered Read

• Repeated access to PLC data

OPC UA

server

Data access

Read request

Node ID = "123456789"

Read response

Value = “11110000”, Timestamp = 10/29/2018 3:15pm, Status = Good

1111

0000

DB1.myArray

1111
0000

123456789

Register Node request Node ID = "DB1"."myArray“

Register Node response Node ID = “123456789"

Improved performance
with repeated access

Node ID: "123456789“

Memory: 16# ABCD_01234

1111

1111

123456789

Node ID: "DB1". "myArray"
Node ID: "123456789"

Page 10

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OPC UA Server for SIMATIC S7-1500 based CPUs
Functional scope

• Load reduction for monitoring use cases

• Absoulte filters possible

*: Simplified illustration

Page 11

Subscribe

OPC UA

server

Subscribe request

Node ID = „DB1“.“myArray“, Publishing interval = 5s, Sampling interval = 1s

1111

0000

DB1.myArray

1111

0000

DB1.myArray

Sampling

Publishing

1111

1111

DB1.myArray

Publish response

1111

1111

DB1.myArray

Publish response

Value = “11111111”, Timestamp = 10/29/2018 3:15pm, Status = Good

Publish response

Value = “11110000”, Timestamp = 10/29/2018 3:15pm, Status = Good

Publish request

Sampling Queue

1111
0000

DB1.myArray

1111
1111

DB1.myArray

Load reduction for monitoring use cases
(Compared to polling)