Transfer float out of words

 On page 1 has DFX explain it should be possible to do it, but that is not correct?

I saw the comment from NIM, but I doesn't understood the programming language, what language is it?

#dP

Hello.

AutoGen_7361160

I have problem using the move block function. It give me a error...
Please see attached picture:

Error: 16#‭8281‬ => "The COUNT parameter has an invalid value"

That instruction is made for moving data from one structure to another same type structure. In your case you are pushing 2 WORDS into 1 REAL.

Have a look at the notes by NiM_0021 at timestamp 3/20/2018 1:15 PM.

BR

 Hello.

AutoGen_7361160

 On page 1 has DFX explain it should be possible to do it, but that is not correct?

I saw the comment from NIM, but I doesn't understood the programming language, what language is it? 

That is SCL. The use of SCL is not what is important - unless you are not using an S7-1200 or S7-1500. The mapping (overlay) concept that is being done in the "block interface" (parameters) is the important.

I was late with the posting of the video clip in my earlier post. Please look at that.

BR

#dP

 Hello.

AutoGen_7361160

 On page 1 has DFX explain it should be possible to do it, but that is not correct?

I saw the comment from NIM, but I doesn't understood the programming language, what language is it? 

That is SCL. The use of SCL is not what is important - unless you are not using an S7-1200 or S7-1500. The mapping (overlay) concept that is being done in the "block interface" (parameters) is the important.

I was late with the posting of the video clip in my earlier post. Please look at that.

BR

I saw your video now, I don`t 100% understand these, need test tomorrow... need to get it working tomorrow morning :)

Do you have a function block who do these job I can take a look on?

I don`t need some more logic addition to the db interface? I just load the array into the db interface and the the real out ?

Are you able to give me a more complete guide?

Thank you.

Attached:
* SCL code
* video instruction on how to import SCL into Step7 V13 and above

Assumptions
* S7-1200 or S7-1500 to be used
* Detail in bender PDF file is correct

Special notes:
* No guarantees
* No testing done
* Information about latter half of package is lacking
* Proper thanks from the Topic Starter
     to all helpers to this topic is expected.
     HINT: Use the "Rate" button.

#dP

Attached:
* SCL code
* video instruction on how to import SCL into Step7 V13 and above

Assumptions
* S7-1200 or S7-1500 to be used
* Detail in bender PDF file is correct

Special notes:
* No guarantees
* No testing done
* Information about latter half of package is lacking
* Proper thanks from the Topic Starter
toallhelpers to this topic is expected.
HINT: Use the "Rate" button.

Good morning.

I have followed the video and added the block, and I have linked up the bytes, Please see attached photo.

The out level is 0 and no alarm.

- I have tried to swap the bytes internal in the word.
- I have tried to swap the last byte in last word with the first byte in first word.

Is there something missing in the FC you made? what is transfer value to the output #measurement?

The value in the picture should be approx. 6mA.

Do you / somebody have any idea?

huggy_d1

Ok, a function block (FC is fine for this) that transforms 4 bytes from the Modbus RTU buffer to a local tag of type REAL?

Without the AT fancy simple elegance suggested and explained via "video" screen capture, you can read your data from the buffer as stupidly as possible, like this: 

FC_Bender_Float_to_PLC_Float( IN1:= MB_Buffer[ start_of_Bender_Float ],
                              IN2:= MB_Buffer[ start_of_Bender_Float + 1 ],
                              IN3:= MB_Buffer[ start_of_Bender_Float + 2 ],
                              IN4:= MB_Buffer[ start_of_Bender_Float + 3 ],
                              OUT1:= PLC_Float )

// FC code starts here

// Use 4 MOVE blocks (Ladder or SCL)

MOVE(IN:= IN1, OUT:= OUT1.%X0 );
MOVE(IN:= IN2, OUT:= OUT1.%X1 );
MOVE(IN:= IN3, OUT:= OUT1.%X2 );
MOVE(IN:= IN4, OUT:= OUT1.%X3 );

// FC code ends here

If you inspect the hex values and they are out of order, simple.  Change the %X0..%X3 values to make it work.

Save, compile, download

You can test manually (assuming you have sample data) by feeding valid bytes into IN1..IN4
Then make sure OUT1 / PLC_Float is the same value as shown on the Bender.

AutoGen_7361160

 I saw your video now, I don`t 100% understand these, need test tomorrow... need to get it working tomorrow morning :)

Do you have a function block who do these job I can take a look on?

#dP

 Hello.

AutoGen_7361160

 On page 1 has DFX explain it should be possible to do it, but that is not correct?

I saw the comment from NIM, but I doesn't understood the programming language, what language is it? 

That is SCL. The use of SCL is not what is important - unless you are not using an S7-1200 or S7-1500. The mapping (overlay) concept that is being done in the "block interface" (parameters) is the important.

I was late with the posting of the video clip in my earlier post. Please look at that.

BR

 

I tested your example also, but I think I done something wrong, I`m getting error when I try to move the data to the real, please see attached picture.

AutoGen_7361160

Good morning.

I have followed the video and added the block, and I have linked up the bytes, Please see attached photo.

The out level is 0 and no alarm.

- I have tried to swap the bytes internal in the word.
- I have tried to swap the last byte in last word with the first byte in first word.

Is there something missing in the FC you made? what is transfer value to the output #measurement?

The value in the picture should be approx. 6mA.

Do you / somebody have any idea?

Hello.

It was my understanding that the communication receives x4 WORDs. This is documented by the PDF you shared earlier.

The designed FB you have now is designed to handle all four those WORDs, not just the 2 WORDs that make up the REAL number. The FB goes beyond what you asked for.

That means in0 pin will need to receive the 1st WORD.
I expect it is ....dataBuffer[0]. No need for a %B0 addition.

                  __
                 |
              ---|  EN
                 |
dataBuffer[0] ---|  in0
                 |
dataBuffer[1] ---|  in1
                 |
dataBuffer[2] ---|  in2
                 |
dataBuffer[3] ---|  in3

Thank you for the ratings -- NiM_0021 deserves an honorary mention.

BR

#dP

 

AutoGen_7361160

Good morning.

I have followed the video and added the block, and I have linked up the bytes, Please see attached photo.

The out level is 0 and no alarm.

- I have tried to swap the bytes internal in the word.
- I have tried to swap the last byte in last word with the first byte in first word.

Is there something missing in the FC you made? what is transfer value to the output #measurement?

The value in the picture should be approx. 6mA.

Do you / somebody have any idea?

Hello.

It was my understanding that the communication receives x4 WORDs. This is documented by the PDF you shared earlier.

The designed FB you have now is designed to handle all four those WORDs, not just the 2 WORDs that make up the REAL number. The FB goes beyond what you asked for.

That means in0 pin will need to receive the 1st WORD.
I expect it is ....dataBuffer[0]. No need for a %B0 addition.

                  __
                 |
              ---|  EN
                 |
dataBuffer[0] ---|  in0
                 |
dataBuffer[1] ---|  in1
                 |
dataBuffer[2] ---|  in2
                 |
dataBuffer[3] ---|  in3

Thank you for the ratings -- NiM_0021 deserves an honorary mention.

BR

We have setup test memory are, please see attached picture.
we getting 0 on measurement...