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I have a project in Arduino PLC IDE 1.0.3 where I've been using Modbus TCP to remote debug and download updates. Today after upgrading Arduino PLC IDE to 1.0.6 and re-initializing the Opta I can no lo…
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hey guys
i want to create a server modbus tcp that can send messages (example "hello")
my project is to send messages to my plc through modbus tcp
can anyone help me out
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Modbus TCP specification determines that only one modbus request needs to be inside a TCP Frame or packet.
Looks like that node-modbus-serial don't use any kind of mechanism to ensure that, correct?
…
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I use the libmodbus for a modbus tcp server on the ubuntu.
My sever code is like the following.
`int main(void)
{
int s = -1;
modbus_t *ctx;
modbus_mapping_t *mb_mapping;
…
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## libmodbus version
libmodbus v3.1.6
## OS and/or distribution
Ubuntu 18
## Environment
...
## Description
A UAF vulnerability exists in unit-test-server that is triggere…
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Although there is a [C source file](https://github.com/stephane/libmodbus/blob/master/tests/unit-test-server.c) showing how to do a Modbus server it covers far too much (it is too complex), and lacks …
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### Answers checklist.
- [X] I have read the documentation [ESP-IDF Programming Guide](https://docs.espressif.com/projects/esp-idf/en/latest/) and the issue is not addressed there.
- [X] I have up…
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Thank you for this awesome project!
I tried to get a custom build for either ESP32 devkit or a generic ESP8266 including Modbus bridge and Modbus TCP functionality. The default Tasmota release for …
JanX2 updated
3 months ago
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This is not an issue ticket. But I like to understand when I should use this library. I understand Modbus RTU (RS485) on Sphere devices needs device specific code and hence this library. But if the us…
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### Which node-red-contrib-modbus version are you using?
5.24.0
### What happened?
The function of sending an empty error message no longer works.
![image](https://user-images.githubusercontent.co…