Hi Experts,
I want to build up master slave communication between two same CPUs 315-2DP. I didn’t add any of the GSD file I just made Hardware configuration. Configure the CPUs and addresses for Profibus.

Profibus address 1 for Master CPU

Profibus address 2 for Slave CPU

Configure the input addresses according to the manual (--Deleted Link, PDF is in attachment--) found online.

Write a programing according to the manual.

Now I downloaded both PLCs in S7-PLCSIM V5.4 + SP5 + Upd1

Set the Input output variables and start both CPUs

Both are working online but there is no sign of communication between them

Kindly help me if there is anything I am ignoring.

Picture and coad are attached.

1. CPUs added 315-2DP
2. hardware configuration master
3. Hardware configuration slave
4. Input output address setting
5. Online Simulation

Link of the manual:--Deleted Link, PDF is in attachment--

hi,

I´m not sure if it is possible. But it should be mentioned in this FAQ if it is not possible:

What is the difference between S7-PLCSIM and a "real" automation system?

An alternative possibility you can find here:

How do you simulate communication between two CPU modules?

hope this helps,

regards,

Hi,

I am not sure if this will help you, but you write about Master Slave communication over DP -> please check the following FAQ

How can you access via PROFIBUS DP another CPU, which is connected to the PROFIBUS DP as a slave, from a DP master using basic communication

 Regards,

Towome