Inquiry! S7-300

Hossam Azzaz

Member
Join Date
Oct 2019
Location
Cairo, Egypt
Posts
9
Dear all,
I'd an issue related to Siemens S7-300 with a 315 CPU. The CPU has a ProfiBus cable connected and I attached my MPI cable to the socket to CPU and successfully downloaded the Ladder logic diagram to my laptop, but the problem appeared when I tried to monitoring ONLINE with CPU, a message of "Unable to reach the module CPU 315-2 PN/DP via the online interface".
So, what could be the reason ? and how to fix this ?
Thanks.
 
Which version of STEP 7 is this?

If it's STEP 7 V5.x, try going to Options -> Set PG/PC Interface
Select PC Adapter (Auto), and try to detect the network settings

I think what might have happened, is the baud rate of the MPI network in your project is different than the baud rate that was in the CPU before you downloaded.
 
I think what might have happened, is the baud rate of the MPI network in your project is different than the baud rate that was in the CPU before you downloaded.

Or

Hossam Azzaz said:
I attached my MPI cable to the socket to CPU and successfully downloaded the Ladder logic diagram to my laptop

They downloaded a blank project.... and needed/wanted to upload :unsure:
 

Similar Topics

Hi everyone, got a Siemens S7-1200 collecting data off one our furnace lines. I'm getting some interesting activity I'm working on cleaning up in...
Replies
6
Views
684
Hello all, This is just a general inquiry, I am a new control systems engineer and would like your insight on control systems upgrade. What...
Replies
8
Views
2,718
We are replacing a piece of machinery with a newer version. The new assembly has 5 TCs which are closer by far to the operator station than the...
Replies
5
Views
2,232
In Allen-Bradley world (Controllogix Rev 30 controller) is PID scaling ALWAYS set to match the input card / sensor scaling? I am simulating a...
Replies
8
Views
2,335
Hi, I have an old unit HMI with model PA10T-133 (PA Powerstations series). 1. I just have an inquiry whether which particular software to use...
Replies
1
Views
1,789
Back
Top Bottom