Hi Jaroslav,

This seems to work, however I now get this error.

Also I only seem to received the first register, is that related to the above error?

Cheers

Mike

Hi All,

I'm looking more into execution timing of projects. I'm not sure what I'm asking matters to much but was wondering if there is a best practice/more sensible way of doing things.

What I've done is put two tasks onto "level 0", but have given them different execution factors. The first task runs with an execution factor of 3, the second a factor of 150 as I need both tasks to run at different times. Is this best practice or should the second task be moved to "level 1" and make it so "level 1" runs at my desired timing factor for that task?

For reference. The first task is writing to a slave device via Modbus as a rate of 0.6sec. The second task is reading from the same device via Modbus every 30sec and logging to a TRND block with the same timing factor.

I hope this makes sense!

Cheers

Mike

Thanks for the reply Jaroslav. How do I go about editing that? Is it through Linux, or a separate program?

Cheers

Mike

Hi Jaroslav,

This is all I have I'm afraid.

I can write to the device using the above configuration (Modbus RTU over USB to TTL). However when reading from it I get an echo, assuming from the it being single duplex. Can REXYGEN ignore the echo?

Cheers

Mike

Hello All,

I have a device that uses half-duplex and sends an echo back to the master (device running REXYGEN), causing an issue when reading registers. Can REXYGEN remove the echo that is reflected back to the master?

Cheers

Mike

Hi Jaroslav,

What would work but wouldn't I then have to use a PIDU block (or similar) for the main process control? I don't need the accuracy of a PID controller.

This is my current cooling solution.

I'm guessing keeping it simple now I require heating isn't so easy Other people need use this after myself so I trying to not over complicate it. But if I need to then I will, no problem.

Cheers

Mike

Hi All,

I’m trying to put together some control logic to both cool and heat using a dead band. Currently I’m using a CMP block for cooling, this works really well. Now need to add heating to this. I was think about using two relay blocks but I’m sure there is a better way.

Thoughts?

Cheers

Mike

Ok, thanks Jaroslav.

I'll use a combination of the ALB and what I currently have to achieve both. This way I'll get both live HMI and logged alarms.

Cheers

Mike

Hi Jaroslav,

That's perfect thank you, makes sense now. Is there a way I can get the alarm into the HMI. Currently I am using the "simple logger" to show strings for some alarms in the HMI. Can I link the ALB blocks to this somehow?

Cheers

Mike

Hi Jaroslav,

No, not causing an issue as such. Setting the LIN block in such a way fixes the problem and allows the fan to operate correctly.

Cheers

Mike