How to change the Hour and Minute in the Weekly timer Block?

ixo65

In attachment some PDFs.

The VM area is used for the LOGO! for data exchange with partner devices.
The user can only use a limited part of the VM area for free using. This is the range from VB0 to VB850.
The range as of VB851 is reserved for the operating system of the LOGO! and the user can not access it in the LOGO! program. This can only partner devices.

 Hi,

I am using node-red to commnunicate with LOGO8  and i woud like to  know if there is a way to change the Hour and Minute in the  Weekly timer Block  ?

I have  mapped the parameter On Time  and  on the node-red side i can write in the VM ,  the value changes but the  format does not match. Any possible help ?

Regards,

MD

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Split from Logging LOGO8 Variable Memory with Node Red.

Hello AutoGen_5957274,

Additional information, if you have a time 12:34h, this must be the hexadecimal representation Hex=1234, the decimal presentation Dec=4660. You can calculate the decimal representation as follows:

4096 x tens of hours + 256 x ones of hours + 16 x tens of minutes + 1 x ones of minutes

For the example 4096x1+256x2+16x3+4=4660

If you have the basic operations + - x / mod div, it would be easy to calculate the desired time.

Regards, Scorp

Hello Scorp,

Your adicional information it´s correct i have tested  and  it works. I have still no idea how to  implment your solution.

. I would like to set the time of LOGO´s block  in  node-red dashboard , any ideas to solve this requets are welcome.

Thanks,

Regards,

MD   

Sorry, i have not used node-red until now. Is it right, you use node-red with Siemens IOT2040 ? Then it should be the possible to write  a c++ program or something else ? Where are the values of your timer you want to write to the Logo ? Maybe other people can help, but they also need more details.

Regards, Scorp

bergmanu

Hi,

can you please provide your current flow? 

Then I will have a look how to add the conversion to your flow. 

Best regards!

Attached simple flow i am  using for testing.

Thanks

Regards,

MD

Scorp

Additional information, if you have a time 12:34h, this must be the hexadecimal representation Hex=1234, the decimal presentation Dec=4660. You can calculate the decimal representation as follows:

4096 x tens of hours + 256 x ones of hours + 16 x tens of minutes + 1 x ones of minutes

For the example 4096x1+256x2+16x3+4=4660

If you have the basic operations + - x / mod div, it would be easy to calculate the desired time.

Regards, Scorp

 Hello Scorp,

Your  information about converting from Hex to Decimal has been very useful .

I  would llke to ask if you could show how to calculate from decimal to hex representation ?

Thank you !

Best Regards,

MD

bergmanu

Hi,

I cannot find any code which can "translate" Hex/Dec into BCD.

But there is a node: https://flows.nodered.org/node/node-red-contrib-binary

I will try that.. Not sure yet if this is the right functionality you are searching for. 

Best regards!

 Hi,

I have already tried the node you mention but does not work.

I think the solution could be  use a function block  node in node-red to write a  script  to convert the input Hex to output  Decimal  based on the calculation Scorp  has described. 

Regards

MD