Hi all,

I am doing a Modbus TCP in IM 151-8 PN/DP cpu as a client.   I created a one FB and I called a MODBUSPN block in that FB. I make a MODBUSPN DB as a "Multiple Instance DB". And then I called a FB in OB1. But it showing an error as "A080". 

Please anyone convey a solution.

Thanks in Advance...

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Split from TCP/IP Open modbus with 2 connections.

Kaulquappe

Hello sharfras,
error A080 means that the FB MODBUSPN has not been initialised. This is an initialisation error and nothing happens until the initialisation was executed without error.

Regards,
Kaulquappe

 Hello Kaulquappe,

Can you please explain how to initialise?? . what I did in the program was, I initialised the "Init" with One memory bit. But error occurs continuously.

This error is happen only when I created a one FB and called the MODBUSPN block in that FB.

In another one program, I called a MODBUSPN block in OB1 itself, I initialised the "Init" with memory bit only. Its working fine.

Thanks in Advance!!!!......

Kaulquappe

Hello sharfras,
can you attach a screen shot of the variable table client_job?

Regards,
Kaulquappe

 Hi Kaulquappe,

Here I attached my program backup for your information.

Kaulquappe

Hello,
your program does not help, as A080 is usually a handling error and not a programming error.

Regards,
Kaulquappe

 Hi,

Can u tell how can I program to initialise the Init??

Kaulquappe

I recommend to keep close to the sample which is installed with the library.

 Hello Kaulquappe,

Ya now its working fine. I can able to read and write data from the server.

Thanks a lot....