Hi all 

I have a problem in cpu s7 1200.

I want to receive packet data in 11 byte length. Communication for receive packets is TRCV_C instruction. I want to save for example 100 packets and after that i will proccess this packets. How can i define a variable for this proccess? 

What instruction should i use? And can i define a variable for proccessing each byte in this packets?

Fery68

Hi all 

I have a problem in cpu s7 1200.

I want to receive packet data in 11 byte length. Communication for receive packets is TRCV_C instruction. I want to save for example 100 packets and after that i will proccess this packets. How can i define a variable for this proccess? 

What instruction should i use? And can i define a variable for proccessing each byte in this packets?

Hello.

Perhaps look at this topic if you do not have the communication already configured:
https://support.industry.siemens.com/tf/ww/en/posts/46768

Or are you already confident of the communication you have?

Do I understand correctly - you wish to save the first 100 transactions and from that point on you need to have the transaction processed? Are you using a UDT and arrays?

I would move the 11 bytes into a structure that I can work with comfortably.

A sample piece of your program will be helpful to be more specific in suggestions.

Cheers.

The communication is ok. I tested and for saving data i am using an  array. Just i do not know how can i proccess 11 byte 11 byte sequently? 

Can i send my program to your email?

Have you had a string proccessing in array structure ?

Hello.

Fery68

The communication is ok. I tested and for saving data i am using an  array. Just i do not know how can i proccess 11 byte 11 byte sequently? 

Can i send my program to your email?

Have you had a string proccessing in array structure ?

Respectfully - There would be a certain expectation from you if I supply you with my email address. Working for you for free does not seem fair.

If you want free advice from a 'friend', you need to find a way to make it 100% clear in the forum on what you want. Even hand-drawn pictures can be helpful. Or screen capture of data structures.


Critical points:
What does the 11 bytes represent? How does this tie in 11 bytes (11?!) with a string? What type of processing is required?


Side note:
The size of an ASCII string (for Siemens) is the sum of [1 byte per capacity for characters] + [2 bytes for header]

11 bytes sized string would mean 2 bytes header + 9 ASCII characters.


Regards.