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Modbus/TCP by jamod


Modbus/TCP by jamod

By : Borislav Bozhidarov
Date : November 22 2020, 11:12 AM
wish help you to fix your issue Exception in thread "main" java.lang.Error: Unresolved compilation problem: MAX_IP_MESSAGE_LENGTH cannot be resolved or is not a field
means the compiler can not find the (constant) value MAX_IP_MESSAGE_LENGTH.
code :


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Writing to modbus with Jamod

Writing to modbus with Jamod


By : user1602220
Date : March 29 2020, 07:55 AM
hop of those help? At the end I wrote my own modbus implementation. I only needed to support 2 different function codes, so implementation was simple.
Although I later found another open source modbus library for java. I someone else comes across the same problem using modbus4j might help.
Modbus protocol escapes the thread (Android,Jamod)

Modbus protocol escapes the thread (Android,Jamod)


By : Jsnyd
Date : March 29 2020, 07:55 AM
help you fix your problem On button click, you call comm.run() which just executes the run() method directly in the context of the UI thread. This is a common error, you should never call run() directly on a Thread instance. Use comm.start() to execute the Modbus code in the context of your worker thread.
Here is the Javadoc
TCP/Modbus for android, (Android,Jamod)

TCP/Modbus for android, (Android,Jamod)


By : darlaraviteja
Date : March 29 2020, 07:55 AM
will help you If you are executing this on API level 11 or above, it might be related to doing blocking network operations on the main thread (onResume is executed on the main thread, thus blocking UI updates). This answer should be of help: https://stackoverflow.com/a/6343299/1045199
Source: http://developer.android.com/reference/android/os/NetworkOnMainThreadException.html
Jamod Modbus Slave - assign registers

Jamod Modbus Slave - assign registers


By : user3779539
Date : March 29 2020, 07:55 AM
it should still fix some issue You can create "fake" registers by adding registers in a loop. This won't create a hole in the Modbus map, so those "fake" registers will be usable by any masters and they will won't cause ILLEGAL ADDRESS EXCEPTION responses.
I have modified j2mod, which is a fork of jamod, so it supports sparse Modbus maps as of SVN revision 95. j2mod is also available on SourceForge.
The right way, to continuously query a Modbus in Java (JAMOD)

The right way, to continuously query a Modbus in Java (JAMOD)


By : Lori English
Date : March 29 2020, 07:55 AM
I hope this helps . You should create a Thread (something that implements Runnable).
See this answer : https://stackoverflow.com/a/426795/362332
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