modbus technology - focus on softing fg-200...2018/09/17 · modbus defines some function codes....

Modbus Technology -Focus on Softing FG-200

17th September 2018, Haar Mikail Aydin, Product Marketing Manager Process Automation

Copyright © 2018 Softing Industrial. All rights reserved. 2

Table of Contents

1.

2.

3.

Introduction

Modbus – Basics

Break – Market Survey Questions

Softing Updates from Data Networks

4. Focus on FG-200 and ComConf (Live Demo)

5. Summary & Q/A



Partner Webinar – Schedule

Q1 Q2 Q3 Q4

April:

mobiLink Launch

August:

DATAcheek: A guide through PROFINET

Diagnostics

March:

Webinar Kick-off

Continuous feedback from Channel Partners

Embedded market surveys

(not more than 5 closed multiple choice questions)

Oct:

TBA

May:

DN-Gateways for Process

Automation

June:

PA Market Overview

July:

Softing mobile Interface overview

Sept:

Modbus Technology - Focus on Softing FG-200

Nov:

TBA

X2 Webinars per month: Monday 9am CET & 4pm CET

https://support.logmeininc.com/gotowebinar?c_name=prodselecthttps://industrial.softing.com/de/wir-ueber-uns/distributor-login.html


Webinar: Calendar

• IA DN PA Webinar: March (19th)

• 2. IA DN PA Webinar: April (17th)

• 3. IA DN PA Webinar: May (14th)

• 4. IA DN PA Webinar: June (18th)

• 5. IA DN PA Webinar: July (16th)

• 6. IA DN PA Webinar: August (20th)

• 7. IA DN PA Webinar: September (17th)

• 8. IA DN PA Webinar: October (15th)

• 9. IA DN PA Webinar: November (19th)

Scheduled Webinars


Webinar - Data Network: Contact Person

Peter Jüngling Senior Account Manager Industrial Data Networks T.: +49 89 45656-376 E.: [email protected] Responsible for registrations in Distributor and Partner Area

Sofi Serpik Marketing Assistant Industrial Data Networks E.: [email protected]

Responsible for communication, invitations and follow-up.

Mikail Aydin Product Marketing Manager Industrial Data Networks T.: +49 89 45656-221 E.: [email protected]

Responsible for content, topics.

https://industrial.softing.com/en/about-us/distributor-and-partner-login.html


Data Network: Social Media


Table of Contents

1.

2.

3.

Introduction

Modbus – Basics




5. Summary & Q/A


What is it About?

Process data (Modbus TCP or FF HSE)

FF-H1 field device Parametrization (TCP/IP)


Learning Outcome Statement

• Get insights into Modbus standard and typical applications What you will learn

•Understand how Modbus communication works

•Troubleshoot Modbus communication’s issue

•Find the Modbus details of our products

•Demonstrate Modbus communication to your customers with Softing products

Skills

• Ethernet communication basics

• Basic understanding of Softing Configuration tools Pre-requirements


Table of Contents

1.

2.

3.

Introduction

Modbus – Basics




5. Summary & Q/A


Modbus History

Origin

o Developed by Modicon (now Schneider Electric) in 1979 to exchange information between

machines on the factory floor.

Goals

o Openly published and royalty-free

o Easy to deploy and maintain

• Simple and robust

o No restrictions on vendors

More details

o Modbus Organization, Inc.

• http://www.modbus.org

http://www.modbus.org/


Where is Modbus Used?


Modbus: Limitations

Modbus was designed to communicate efficiently (with PLCs)

o Number of data types is limited

o Large binary objects are not supported

o Nodes cannot figure out the description of the data

• Example: determine if a register value represents a temperature, a speed…

o Master/Slave protocol, the data is polled

• Slave cannot report a problem

Master must poll each field device and look for changes

o Modbus is restricted to address 254 devices on one data link

o Modbus protocol provides no security against unauthorized commands or interception of data


Modbus: How does it Work

“Is the door open Or closed?” “I want to open it” “I want to close it”

Communication protocol: o Set of rules that tell machines:

• How to talk to each other, • How to check errors, • How fast and what they should send, • How they should initiate/terminate the communication

o Example: A phone call

New state

Cell door

Security team



Request

Response

Client Server

Open (1) Closed (0)

Polling

HMI / SCADA / PLC



Server

Depending on input statuses, the server will constantly update its Internal memory Modbus registers

Client

Request

Response

Internal memory

Primary tables

Read coils Read coil X

X 0

2

1

3

3 2

4 HMI / SCADA / PLC

The terms "coil“ (Read / Write) and “Input Discrete” (Read-only) are bits, for example ON or OFF. “Holding registers” (R / W) and “Input Registers” ( Read-only) are "words“ and are 16 bits long


Modbus: Function Codes & Variations

Code Name Code Name

01 Read Coils 13 Program Controller

02 Read Discrete Inputs 14 Poll Controller

03 Read Holding Registers 15 Write Multiple Coils

04 Read Input Registers 16 Write Multiple Registers

05 Write Single Coil 17 Report Slave ID

06 Write Single Register 18 Program 884/M84

07 Read Exception Status 19 Reset Comm. Link

08 Diagnostics 20 Read File Record

09 Program 484 21 Write File Record

10 Poll 484 22 Mask Write Register

11 Get Comm Event Counter 23 Read/Write Multiple Registers

12 Get Comm Event Log 24 Read FIFO Queue

Modbus defines some function codes. Devices do not support all of them.

Variation Modbus

RTU Modbus

ASCII Modbus

TCP

Physical Medium

RS-232 / 422 / 485

RS-232 / 422 / 485

Ethernet

Serial Data Bits

8 7 ---

Data Format HEX ASCII HEX

Topology One

Master One

Master Multiple Clients


Modbus TCP: Message Frame

Request

Transaction Identifier

Protocol Identifier

Length Unit

Identifier Function

Code Data

2 bytes 2 bytes 2 bytes 1 byte 8 bits N x 8 bits

(0-252bytes)

7-byte ModBus Application Protocol (MBAP) header

Client Server


Modbus TCP: Normal Request and Response

Request

Modbus TCP Response

Modbus TCP Request

Response


Protocol Identifier

Length Unit Identifier Function Code Data

Start Address Length

0x 03 00 0x 00 00 0x 00 06 0x 11 0x 03 0x 00 6B 0x 00 01


Protocol Identifier


Length Data Value

0x 03 00 0x 00 00 0x 00 05 0x 11 0x 03 0x 02 0x 00 01

Client Server


Modbus TCP: Abnormal Request and Response

Request

Modbus TCP Response

Modbus TCP Request

Response


Protocol Identifier


Start Address Length

0x 03 00 0x 00 00 0x 00 06 0x 11 0x 03 0x 00 6B 0x 00 01

Client Server


Protocol Identifier


Exception Code

0x 03 00 0x 00 00 0x 00 03 0x 11 0x 83 0x 02

Value Name Meaning

01 Illegal

Function

The function code received in the query is not an allowable action for the slave. This may be because the function code is only applicable to newer devices, and was not implemented in the

unit.

02 Illegal Data

Address The data address received in the query is not an allowable address for the slave. More specifically,

the combination of reference number and transfer length is invalid.

03 Illegal Data Value A value contained in the query data field is not an allowable value for the slave. This indicates a

fault in the structure of remainder of a complex request, such as that the implied length is incorrect.

04 Slave Device

Failure An unrecoverable error occurred while the slave was attempting to perform the requested action.

05 Acknowledge Specialized use in conjunction with programming commands.

The slave has accepted the request and is processing it, but a long duration of time will be required to do so.

06 Slave Device Busy Specialized use in conjunction with programming commands.

The slave is engaged in processing a long-duration program command. The master should retransmit the message later when the slave is free.


Table of Contents

1.

2.

3.

Introduction

Modbus – Basics




5. Summary & Q/A


COMPLETE ▪ HIGHLY FUNCTIONAL ▪ COST EFFICIENT

FG-200: Specs

Four channel host interface on the infrastructure level in-between Host systems (Modbus/TCP or HSE) and FF-H1 field devices

• Either via a DCS/PLC Host system, the Softing configuration tool, or an engineering tool

Fast redundancy (FF-H1 segments) • Cyclic communication (Publisher - Subscriber) for immediate switch

Support of FDT Frame Applications and major Engineering Tools

Suitable for use in hazardous areas • Ex approval for Zone 2


Product Differentiation: FG-200 vs. FG-110

The major differences of the FG-200 are:

o The device has 2 Ethernet ports o More performance and more precise timing thank to a FPGA-

based design o Bus-powered Medium Attachment Unit

• The FG-200 draws 10 mA per fieldbus segment (FF-H1)

o Designed to work with STAHL carrier and power conditioners – for easy wiring and reduced commissioning efforts

o Optimized redundancy • Configuration exchange for redundancy is now done via high

speed serial port instead of Ethernet

o Modbus TCP accesses cannot be configured on web server

FG-110 (EOL)

FG-200


FG-200: Demo – ComConf & Connection with PACTware

+ +

Rosemount™ 848T Temperature Transmitter

PACTware 5.0

ComConf

FG-200

Field devices DD files

Field devices DTM files

Vegabar 52 Pressure Transmitter

FF HSE + FG-200 DTMs

FG-200 included


Summary: FG-200 Project

Create a new project and follow the following steps:

o In ComConf (Softing configuration tool):

• Make configuration in ComConf and define your Modbus TCP registers • “Build current segment” in ComConf • “Download current segment” configuration via ComConf • Check that you don’t have any errors in “Message Log”

o In web server of the FG-200:

• “Reload Live List” in “Configuration > Fieldbus > Blocks”. Your configured blocks should appear. • Import the csv file containing the Modbus mapping in “Configuration > Modbus > Import/Export” • Define point pages with point data in “Configuration > Page Options”

• Verify, if the data is shown correctly in “Monitor > Point Data” • If not, “Reload Live List” again.


Table of Contents

1.

2.

3.

Introduction

Modbus – Basics




5. Summary & Q/A


Summary / Call for Action

Modbus TCP is easy to use and to implement

Most of the PLCs support Modbus TCP

o Schneider does not have native I/O cards for FF-H1 Need of Gateway life FG-200

Use marketing material and target new customers

o Create awareness

• FG-200 has been released for a long time and is a mature product, good success stories in O&G

• New products: mbGate PA released in April and mbGate DP coming soon (end of November)

Gather feedbacks from your customers

o For existing devices: improvement / feedbacks

o For further development (new protocols, new features…)

Involve PMM team (Thomas Hilz and myself) for interesting projects and support requests (live

demo, technical details…)

Mikail Aydin Product Marketing Manager Softing Industrial – Data Networks Tel: +49 89 45 656 -221 Mobile: +49 176 21833999 Email: [email protected]

Thank you very much for your attention! Any questions? Feel free to ask!

industrial.softing.com/en

modbus technology - focus on softing fg-200...2018/09/17 · modbus defines some function codes....

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