Help
  • Get started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
Login / Register
Brand Logo
Help
  • Get started
  • Ask the Community
  • How-To & Best Practices
  • Contact Support
close
  • Community Home
  • Forums
    • By Topic
    • By Topic
      EcoStruxure Building
      • Field Devices Forum
      • SmartConnector Forum
      EcoStruxure Power & Grid
      • Gateways and Energy Servers
      • Metering & Power Quality
      APC UPS, Critical Power, Cooling and Racks
      • APC UPS Data Center & Enterprise Solutions Forum
      • APC UPS for Home and Office Forum
      EcoStruxure IT
      • EcoStruxure IT forum
      • EcoStruxure IT™ Advisor CFD
      Remote Operations
      • EcoStruxure Geo SCADA Expert Forum
      • Remote Operations Forum
      Industrial Automation
      • Alliance System Integrators Forum
      • AVEVA Plant SCADA Forum
      • CPG Expert Forum DACH
      • EcoStruxure Automation Expert / IEC 61499 Forum
      • Fabrika ve Makina Otomasyonu Çözümleri
      • Harmony Control Customization Forum
      • Industrial Edge Computing Forum
      • Industry Automation and Control Forum
      • Korea Industrial Automation Forum
      • Machine Automation Forum
      • Modicon PAC Forum
      • PLC Club Indonesia
      Schneider Electric Wiser
      • Schneider Electric Wiser Forum
      Power Distribution IEC
      • Eldistribution & Fastighetsautomation
      • Elektrik Tasarım Dağıtım ve Uygulama Çözümleri
      • Paneelbouw & Energie Distributie
      • Power Distribution and Digital
      • Solutions for Motor Management
      • Specifiers Club ZA Forum
      • Електропроектанти България
      Power Distribution NEMA
      • Power Monitoring and Energy Automation NAM
      Power Distribution Software
      • EcoStruxure Power Design Forum
      • LayoutFAST User Group Forum
      Energy & Sustainability Services
      • Green Building Scoring and Certification Forum
      Light and Room Control
      • SpaceLogic C-Bus Forum
      Solutions for your Business
      • Solutions for your Business Forum
      Support
      • Ask the Community
  • Knowledge Center
    • Building Automation Knowledge Base
    • Remote Operations Devices Knowledge Base
    • Geo SCADA Knowledge Base
    • Industrial Automation How-to videos
    • Digital E-books
    • Success Stories Corner
  • Events & Webinars
    • All Events
    • Innovation Talks
    • Innovation Summit
    • Let's Exchange Series
    • Partner Success
    • Process Automation Talks
    • Technology Partners
  • Ideas
    • EcoStruxure Building
      • EcoStruxure Building Advisor Ideas
      Remote Operations
      • EcoStruxure Geo SCADA Expert Ideas
      • Remote Operations Devices Ideas
      Industrial Automation
      • Modicon Ideas & new features
  • Blogs
    • By Topic
    • By Topic
      EcoStruxure Power & Grid
      • Backstage Access Resources
      EcoStruxure IT
      • EcoStruxure IT™ Advisor CFD
      Remote Operations
      • Remote Operations Blog
      Industrial Automation
      • Industrie du Futur France
      • Industry 4.0 Blog
      Power Distribution NEMA
      • NEMA Power Foundations Blog
      Energy & Sustainability Services
      • Active Energy Management Blog
      Light and Room Control
      • KNX Blog
      Knowledge Center
      • Digital E-books
      • Geo SCADA Knowledge Base
      • Industrial Automation How-to videos
      • Remote Operations Devices Knowledge Base
      • Success Stories Corner
  • companyImpact

Differences Between SCADAPack Modbus and Modbus

Geo SCADA Knowledge Base

Access vast amounts of technical know-how and pro tips from our community of Geo SCADA experts.

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Show  only  | Search instead for 
Did you mean: 
  • Home
  • Communities
  • Knowledge Center
  • Geo SCADA Knowledge Base
  • Differences Between SCADAPack Modbus and Modbus
Invite a Co-worker
Send a co-worker an invite to the Exchange portal.Just enter their email address and we?ll connect them to register. After joining, they will belong to the same company.
You have entered an invalid email address. Please re-enter the email address.
This co-worker has already been invited to the Exchange portal. Please invite another co-worker.
Please enter email address
Send Invite Cancel
Invitation Sent
Your invitation was sent.Thanks for sharing Exchange with your co-worker.
Send New Invite Close
Top Labels
Top Labels
  • Alphabetical
  • database 32
  • Web Server and Client 31
  • Lists, Events & Alarms 21
  • WebX 19
  • Request Form 18
  • ViewX 15
  • Setup 12
  • Application Programming 12
  • Telemetry 7
  • Mimic Graphics 7
  • Downloads 6
  • Support 5
  • IoT 5
  • Drivers and Communications 4
  • security 4
  • SCADA 4
  • Geo SCADA Expert 4
  • DNP 3 3
  • IEC 61131-3 Logic 3
  • Events & Alarms 2
  • Trends and Historian 2
  • Virtual ViewX 2
  • Lists 2
  • Privacy Policy 1
  • OPC-UA 1
  • Architectures 1
  • Templates and Instances 1
  • ClearSCADA 1
  • Releases 1
  • Maps and GIS 1
  • Tools & Resources 1
  • Mobile 1
  • Geo Scada 1
  • Previous
  • 1 of 4
  • Next
Latest Blog Posts
  • Geo SCADA Expert 2022
  • Geo SCADA 2022 Operating System Support
  • Geo SCADA 2022 Upgrade Strategy
  • Geo SCADA 2022 Upgrade Notes
  • Geo SCADA 2022 Known Issues
Related Products
product field
Schneider Electric
EcoStruxure™ Geo SCADA Expert

Invite a Colleague

Found this content useful? Share it with a Colleague!

Invite a Colleague Invite
sbeadle1
Spock sbeadle1 Spock
Spock
‎2021-06-09 11:47 AM
0 Likes
0
258
  • Bookmark
  • Subscribe
  • Email to a Friend
  • Printer Friendly Page
  • Report Inappropriate Content
‎2021-06-09 11:47 AM

Differences Between SCADAPack Modbus and Modbus

Originally published on Geo SCADA Knowledge Base by sbeadle1 | June 09, 2021 08:47 PM

📖 Home  Back  
The SCADAPack Modbus is a driver that allows connection to the Control Microsystems range of SCADAPack RTUs using the Modbus protocol. These devices support standard Modbus communications options, but also have a number of additional features that are unique to this range of RTUs that have been supported by this driver.

The SCADAPack Modbus driver is an Advanced driver, which means that it provides functionality not available in the simple drivers such as Modbus. One key addition is in the area of PSTN modem support. The PSTN support provides a way that Modbus devices can be dialled from ClearSCADA, but using the Unsolicited PLC functionality, remote devices can also dial into ClearSCADA and identify themselves.

The point polling mechanism is handled differently in the SCADAPack Modbus driver. In the Modbus driver, individual scanners are configured which determine what data gets polled and at what frequency. All points defined within that scanner will be polled at the same rate. In the SCADAPack Modbus driver, points get assigned to one of eight Retrieval Intervals. The driver then packages up requests based on the configured Retrieval Intervals, and polls the device accordingly.

The Modbus driver includes support only for Modbus RTU over serial or TCP, or Modbus TCP. The SCADAPack Modbus driver also includes support for Modbus UDP, Modbus ASCII over serial, TCP and UDP and Modbus RTU over serial, TCP or UDP.

Addressing in the Modbus driver is handled by referencing an offset within the defined point scanner. For example, in a scanner that reads 100 holding registers from address 40000, you would configure an analog point with a word offset. To read address 40050, you would configure a point with a word offset of 50 (depending on the Modbus addressing of your device). The SCADAPack Modbus driver uses direct addressing in the point objects so to reference the point at address 40050, you would enter the address 40050 directly.  See Modbus Driver Polling Differences for more information.


Examples of additional SCADAPack functionality includes support for the following:
  • DLOG historic data for reading time stamped history data from the RTU.

  • Remote connection objects to allow other programming tools to be used over the same communications links.

  • Time synchronization

  • A generic Modbus outstation type which enables use of the SCADAPack Modbus driver features


Additional functionality available for generic Modbus devices includes:
  • Support for Modbus ASCII. Modbus RTU and Modbus TCP/UDP including support for Modbus ASCII over TCP and UDP and Modbus RTU over TCP and UDP.

  • Restriction of the maximum packet size

  • Unsolicited PLC functionality so a remote Modbus device can report into the master

  • PSTN support

  • Switched and shared outstation sets for multiple communications paths and redundancy


So which driver should you use?


If you have a simple configuration that does not require the additional functionality provided in the SCADAPack Modbus driver, then you can use either Modbus or SCADAPack Modbus. There is no real reason for one to be used over the other, it really comes down to personal preference. If, on the other hand, you require things such as Modbus ASCII protocol, modem support or communication to a SCADAPack Modbus device, you should use the SCADAPack Modbus driver.

Go: Home Back

Author

Biography

sbeadle1

  • Back to Stream
  • Newer Article
  • Older Article
To The Top!

Forums

  • APC UPS Data Center Backup Solutions
  • EcoStruxure IT
  • EcoStruxure Geo SCADA Expert
  • Metering & Power Quality
  • Schneider Electric Wiser

Knowledge Center

Events & webinars

Ideas

Blogs

Get Started

  • Ask the Community
  • Community Guidelines
  • Community User Guide
  • How-To & Best Practice
  • Experts Leaderboard
  • Contact Support
Brand-Logo
Subscribing is a smart move!
You can subscribe to this forum after you log in or create your free account.
Forum-Icon

Create your free account or log in to subscribe to the forum - and gain access to more than 10,000+ support articles along with insights from experts and peers.

Register today for FREE

Register Now

Already have an account?Login

Terms & Conditions Privacy Notice Change your Cookie Settings © 2023 Schneider Electric, Inc