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It would be a nice debug facility to have ability to dump traces to any file instead of stdout and stderr as of today. This could be a setting, active when setting debug active with modbus_set_debug()…
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Hi!
I've got a problem with RTU communication.
On an RTU link (RS485) I've got one master and two slaves.
The problem is, that when a master starts a "modbus_read_input_registers" communication. The…
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I'm not sure what this is missing, but the examples unpacked into /usr/share/doc/libmodbus-dev/examples don't compile according to the instructions in the README. (They're missing whatever it's need…
karlp updated
12 years ago
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I'm having some issues with libmodbus, that as best I can tell, are problems coming from the rtu CRC check.
If I simply ignore the return codes, everything works just fine. in debug mode, I see the …
karlp updated
13 years ago
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I've successfully built libmodbus master on Cygwin with a few minor modifications. The stumbling block was the configuration flags `HAVE_DECL_TIOCSRS485`: since there's no Linux kernel present, this …
xatom updated
13 years ago
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the command ./configure send me a warning telling me to come here and report what's happened:
"
configure: WARNING: winsock2.h: present but cannot be compiled
configure: WARNING: winsock2.h: check…
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There's currently no tests covering data corruption, timeouts etc.
There should be some. I intend to write some at some point in the near future but if someone get's there before me I'll help out.
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Hello,
I'm surveying how fast the response time could be for typical Ethernet hardware with Modbus TCP/IP. The results I got are varying from 11.92us to 20ms.
- [11.92us, slave turnaround time not in…
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When i was testing the libmodbus 2.9.3 , i observed the following error in the server
Waiting for a indication...
ERROR CRC received 1E7E != CRC calculated 2ECC
Quit the loop: Invalid CRC
and iwith…
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Hi Stephane,
Just a minor bug I think: On the website (libmodbus.org) you report the latest development/unstable version to be 2.9.1, however the configure generates a modbus-version.h file containin…