S7-300 MB_TPC doesn't work with retrieve of data

Hi,

  When i add my program with SCALE etc.  Modbus give and error code A083

CONTROL_DAT.init_status 16#A083.

Which is raised when

S7 is client: A job was triggered while the previous job is still in progress. The job is not executed. This is a status information. The ERROR bit is not set.

An attempt was made to initialize the block while a job was running or while ENQ_ENR was set.

I tried with higher 

L     t#5s
T     "CONTROL_DAT".RECV_TIME

L     t#5s
T     "CONTROL_DAT".CONN_TIME

But same result.

Is there any way to reinitialize modbus at run time/

Thanks

Even if i tried to initialize the Modbus , It doesn't work.

I simply added below code and Modbus stop working.

My program structure is

The network structure is

Hardware configuration

Thanks

Hi,

  The complete project has been attached.

  The complete project has been attached.

It is  TIA portal v15.1 project.

Presently COMP_Station_Valves_Test(FC5) has been called for testing. After successful test i will change call to COMP_Station_Valves(FC4).

Thanks

Dear Sir,

    Thank you very much for your support.

After changing CONT_C to OB35, Now it is working fine.

[snip]

Thanks

Vishnu