Dear Nicolai,

Nice one. I just updated our systems and all is well. Thank you!

Kees Jan

Dear Purecade, I know nothing of "regular" PLC's, really, but your comment about the communication cycle brought me here. So here is a sort-of answer to your question. Coming from a software world, the focus on I/O or slave or communication cycle always surprised me. I have a little system...

Dear Nick, You can search for the culprit systematically by running the du command. Here is what I do: I go to the file system root (cd /) and then run "sudo du -ks * | sort -n | tail -5". This gives me files or directories that are the largest. Then I go into the directory that has the la...

Dear All,

A quick check with an external power supply and an oscilloscope shows that this problem is with the flow meter, not with the Revolution Pi.

Kees Jan

Dear Nicolai,

We measured with all wiring removed that the output was indeed 10V. The problem must be elsewhere in the system. Thank you for taking the time to confirm.

Kees Jan

Dear All, We have a few flow meters that run at 500Hz for full flow. From our experiments, flow is reported properly until we get close to the maximum 500Hz. Then, the counter stops incrementing although there is still flow. We also have a U1000 flow meter, running up to 200Hz for 200l/min. That wor...

Dear All, We just measured the output of a 0-10V pin on an AIO module. We measure only 9.1V on the pins, instead of the expected 10V. In code, we set the I/O pin to value 10000. I can imagine there is some margin for error, but this is almost a 10% deviation. In practice this means that we cannot ru...

Dear jmvr,

I cannot see how the module's X2 connector is wired. Did you connect 0 and 24V to the X2 connector?

Kees Jan

PS. Please behave professionally in your posts.

Dear Kunbus,

Can Revpipyload please be made into a real release? I am running a non-release package 0.9.7a now, gracefully provided by Sven, but I much rather be running release packages. The current release package 0.9.7 has a broken MQTT service.

Kees Jan

Dear All, I have a question about the use of Open Source libraries in your code. How do you feel about the use of external libraries and tools, developed on Github, in your code? As for why I ask: I come from the Java world, where building on OSS code is the norm. Libraries and dependency management...