Hardware : arduino R3 , arduino ethernet shield , ethernet cable , PLC S7 1500, PN.

In arduino i'm using library modbus to communicate modbus TCP IP

In TIA , i;m using MB-client block to receive the value from arduino.

I also set the same IP of arduino and MB-client block, IP : 192.168.1.150, port 502, Interface of PLC is 64. 

But the status block show 7000 that means : 

No call active and no connection established (REQ=0). 

And of course i don't receive the value.

I think one of arduino code or plc code has problem.

So can anyone help me? Thank alot.

 this is my code from PLC

I found 1 error is using always false in disconnect , but status running 7001, 7002, 80C4 and again. 

 i have fixed my errors, thank you so much.

PTHVN

 

 i have fixed my errors, thank you so much.

 Hello ,

Can you please share the program for both the devices. I also need to do the same.

Thanks