Possibility of communication between PLC S5-115 and S7-300

Hello guys,

I have an old PLC S5-115 with CP524 and a PLC S7-300 with CP340. I need to exchange data between this 2 PLC.

I think I have 2 possibility:

- use the programming port on PLC S5 with TTY adapter and to develop AS511 protocol on S7-300;

- use the RS232 port on CP524 and to use the 3964R protocol on S7-300.

I would like to use the second method but I don't know how to read/write Data Block into PLC S5 through the CP524.

Do you have some advise to help me?

Thanks in advance.

It's best if you upgrade the S5-115U instead of investing time and money in the old technology.

There is a product from IBH that lets you use the AS511 programming port on Ethernet:

https://www.ibhsoftec.com/epages/63444704.sf/en_GB/?ObjectPath=/Shops/63444704/Products/20284

Then you could use a CP343-1 Ethernet module in the S7-300 or the following Ethernet/MPI device:

https://www.ibhsoftec.com/epages/63444704.sf/en_GB/?ObjectPath=/Shops/63444704/Products/20266

I believe that even with the CP524, you will need an EPROM with Prommer to do the configuration, the above solution is more modern and more easily upgraded in the future.

Thank you Contrologica.

The CP524 worked with an InTouch Supervisor until 7-8 years ago, so it is already programmed.

In the last year I used a TTY-RS232 converter to link a PC with Progea Movicon supevisor to programming port on PLC CPU.

Now the customer wants to move the PC in a Server Room that is too far from the PLC S5 to continue using the serial cable.

I already used devices that you proposed but unfortunately the Progea Movicon supervisor has not driver for those. I should use OPC server on devices but I think it's necessary to pay a license.

So, the cheaper solution for the customer is to use an old PLC S7-300 as a Gaeteway.

Other advises?

Bye. 

An option that might work is a "serial tunnel".  Digi has a serial/Ethernet device where you can connect them via Ethernet, with the 2 serial devices on each end.  Think of it as making a very long serial cable using Ethernet cable/infrastructure.  The S5 side would still need an RS-232/TTY conversion.  This could be your direct connection from the server PC to the S5 PLC.

https://www.digi.com/products/networking/infrastructure-management/serial-connectivity/device-servers/digionesp

Here is a document explaining how to configure:

https://hub.digi.com/support/products/infrastructure-management/digi-one-sp-ia/?path=/support/asset/application-guide-serial-bridge-tunnel-and-loopback-test-for-portserver-ts-family/

I think using the CP524 will be too difficult to implement.