Sample Program: Modbus TCP with S7-1500

OK, I think I figured out my problem.  Actually 2 of them.

In the "ConnectDB" data blocks I was using the same ID value.  I had previously tried changing this and it did not work.  However, I was uploading software changes while the PLC was running.  I tried this again with different connection IDs, only this time using the "Download and reset PLC program" option.  Now I have 2 clients connected.

Dear Mr Denilson and Mr Rafael ,

Thank you for all your suggestion . Problem already solve by make different not only IP ADdress but also  Connection ID.
Please see my attachment.

Thank you very much for your support guys . Appreciated

Regards,

Steven

Hai Denilson,

              As i tried to open the Modbus TCP with S7-1500 TIA V14 but i can't open so please help me how to open that TIA V13 file on TIA V14 software.  

Hi,

with the internet examples, I made an example project between two s7-1200 (one as a server and the other as a client) maybe it can help you.

rojasalmut2

Hi,

with the internet examples, I made an example project between two s7-1200 (one as a server and the other as a client) maybe it can help you.

use version 14 of the TIA PORTAL, CPUs with firmware version 4.2 and MODBUS instructions V4.1.

The blocks were without optimized access.

regards

 attachment video example...

TomEPE

Hi,

I tried this sample program and am having a few issues on TIA portal Pro v13 with a S7-1516-3 PN/DP, firmware v1.1.2.
The s7-1500 PLC is a Modbus client and so I am only using "MB_CLIENT_DB".

1) MB_DATA_PTR didnt accept a struct as in your example, "MB_CLIENT_DB".STATUS = error 818B:
"The MB_DATA_PTR parameter has an invalid pointer."
However, no complain with an array[0..2] of Int.

2) if Client_Send_DB.InterfaceId is < 64, "MB_CLIENT_DB".STATUS = error 809B:
"The element InterfaceId within the TCON_xxx structure does not reference a hardware identifier of a CPU or CM/CP interface or has the value "0"."

3) if Client_Send_DB.InterfaceId is >= 64, "MB_CLIENT_DB".STATUS = error 8086:

"The ID parameter is outside the valid range."

Those 2 last errors are not specifique to MODBUS (TCP) but to TCON for S7-1200/S7-1500. As I understood, I need to set InterfaceId with the Hardware Identifier of the PLC port used to communicate with the Modbus Master. In this case, the ethernet cable is connected to Port[X1 P1 R], which has a Hardware Identifier = 65, as seen in the following screenshot:
http://i.gyazo.com/4916e839cd260cc5cc3fe7f3d6ca58cd.png

I also attached my sample project to this post for info.

 Hello,

Were you able to solve this issue!? If yes, I would like to know how you succeeded. I am facing the same issue here.

Thank you.