s7300 plc controlling old s5 io modules ?

is it possible to replace an S5 plc cpu 945 by a new s7300 , while keeping all the old s5 digital and analog input output modules ?  then the new plc will be in control of the existing old s5 modules ?  thank you  

Hello Ziemens;

With a S7-300 CPU, you could transform the S5 IO modules into an ET 200U station, if you can get hold of an IM 308-B or  (preferably) a IM 308-C.

Have a look at this discussion where you will also find a link to a ET 200U manual.

https://support.industry.siemens.com/cs/us/en/view/217419

S5 CPUs and IOs have been discontinued for quite some time now and Siemens no longer offers spare parts. You would need to look on E-Bay or reseller sites for your IM 308 modules if you need to purchase them.

Hope this helps,

Daniel Chartier 

Hello Ziemens;

Here is another way you can reuse S5 IO modules with a S7-300 CPU: S5 IO adapters from Siemens or Phoenix Contacts:

https://w5.siemens.com/italy/web/AD/ProdottieSoluzioni/Sistemiautomazionenew/Documents/AllegatiInfo/AdapterDescription_300_400_1500_eso_esterno.pdf 

https://www.phoenixcontact.com/assets/downloads_ed/local_be/web_dwl_promotion/S5_S7_E_01_08_07.pdf 

With these adapter modules you would need to have in your S7-300 rack equivalent modules to those in your S5 system, for example a S7 16DI 24 VDC to connect to your S5 16DI 24VDC module. You would then use the adapter module for 16 DI to replace the front connectors of the S5 and S7 modules.

Hope this helps,

Daniel Chartier

Ziemens

is it possible to replace an S5 plc cpu 945 by a new s7300 , while keeping all the old s5 digital and analog input output modules ?  then the new plc will be in control of the existing old s5 modules ?  thank you  

 You could have a look at this solution from VIPA

Kind regards,

BV