Hi dears,

I have 5 no. 412-5H without CP443. (for HVAC)

these 5 no. 412-5H must be connect to DCS system with modbus TCP/IP.

I want to purchase (SIMATIC MODBUS/TCP PN Red for S7-400 PN-(H) systems, Single

I want to know only one License is enough? or I must purchase 5 license separately?

***our engineering station is one Laptop***.

and I have another question: without CP443 can I connect to 400H redundant system with integrated PN port of 412-5H?

Best Regards

Hello bibak;

Maybe the following discussion can help:

Release of new product "Simatic Modbus/TCP PN CPU Redundant:

https://support.industry.siemens.com/tf/ww/en/posts/release-of-new-product-simatic-modbus-tcp-pn-cpu-redundant/100240?page=0&pageSize=10

Follow the information provided by our friend Wustenrauber. This link take you to the Product support pages for that package.

https://support.industry.siemens.com/cs/products/6av6676-6mb10-0ax0/simatic-modbus-tcp-pn-red?pid=182152&mlfb=6AV6676-6MB10-0AX0&mfn=ps&lc=en-WW

Hope this helps,

Daniel Chartier

thank you for your reply

The Modbus/TCP blocks have to be licensed separately for each CPU, right?

mean I must purchase 5 License separately? is it true?

Best Regards.

Dear Bibak

It's true. you need five licenses for Redundant Modbus TCP IP