FAQ | Frequently asked questions about PLCcom for Modbus
Welcome to our FAQ section PLCcom for Modbus!
Here you will find answers to the most frequently asked questions about our software. Whether technical details, installation aids or use cases - we have compiled the most important information for you to make accessing Modbus Master or Modbus Slave with PLCcom as easy as possible.
The following system components are required for the operation of PLCcom:
- Microsoft .NET Framework 4.7.2 (.Net Version) or higher
- Microsoft .NET Core 3.1 (.Net Version) or higher
- Microsoft .NET Standard 2.1 (.Net Version) or higher
- Microsoft .NET 5.0 (.Net Version) or higher
- Java SDK (openJDK) 1.8 / JRE (openJRE) 8 or newer (Java-Version)
To execute code examples:
- Visual Studio 2019 or higher (.Net-Version)
- Netbeans 8 or higher (Java)
- Eclipse Oxigen or newer (Java)
To use the .NET-component you have to refer to the PLCcomMB.dll.
To use the Java-component you have to refer to the PLCComModBus.jar and jssc.jar.
Best practice: copy the files to your java home dictionary [jdk HOME]/jre/lib/ext or [jre HOME]/lib/ext.
Yes, PLCcom runs in 32-Bit- and 64-Bit-environments.
You can embed the driver directly as a link; API calls are not necessary.
It is no problem to use the component in 32- or 64-Bit-environments, as well as across platforms.
In the download package, extensive programming example objects, as well as a HTML documentation are included.
Download current version of documentation:
.Net https://www.plccom.de/help_modbus/Net/help/index.html
Java https://www.plccom.de/help_modbus/Java/javadoc/index.html
The network participants must be able to connect with the network. The Connection and ports must not be interrupted by a firewall or similar.
All licenses are made available as developer licenses.
The fee-based professional license entitles a developer for industrial/commercial development of individual software (definition see EULA) with the PLCcom component.
If you need a free license for non-commercial usage for schools or universities please contact us via e-mail [email protected]. You'll receive a serial key as soon as possible.
To get the licenses you have the following possibilities:
- on our website
- by sending an email to [email protected]
- by phone at +49 421 989703-30
- by fax to +49 421 989703-39
You must transfer the submitted license key within your software to the PLCcom entity.
Extensive examples can be found in the online documentation or the delivered software package.
Please contact us in this case. We will then create an offer for a company license.
No, if your customer wants to make a further development of your software, the customer needs an own license.
PLCcom is compatible with all Modbus devices that support the specification of Modbus Organization.
A processing of the data occur only for internal purposes, such as the management of licenses, newsletter etc. A disclosure to third parties is excluded.
Slave-component whit multiple listeners; that means it is possible to make any numbers of accesses to a Modbus Slave available at the same time e.g. TCP Port 502, TCP Port 503, UDP Port 502, etc.
