Hi Experts,

What options physically has to be done removing a remote IO/Node located in between the network via Profibus in S7300 ?

There is an S7300 with 10 remote IOs. One node has to be remove located in between. I understand that hardware config has to be modified and to download.

What about the physical setup, is it possible that I just had to disconnect the node and had to use the switches ON and OFF in the connector ?  Or is there special module or junction module to put?

It was suggested that a new profibus cable had to be lay for reliable connection, but client rejected it. Any suggestion ? Thanks.

Regards,

Jc

mopS04

hi jruz1,

Profibus is always in a line where (small) stiches going to the nodes. The Profibus pluges are usually designed that way, that the line is not interrupted when plugging a node off.

So technically your customer is right, you just needed to plug it off. In the SW you need to use the D_ACT_DP instruction to deactivate the Profibus-node:

How do you enable and disable DP slaves and IO devices using the "D_ACT_DP" instruction?

So you can easily reactivate the node, if it is needed in the future again.

hope this helps,

regards,

 Hello,

Thank you for the info. Would you mind to resend the link, it just leads me to Siemens Error "Industry Online Support is currently not available" 

Let me see if I get it right.

Do I still need to remove the node from the hardware configuration, or not?

Or, do I just have to insert this D_ACT_DP code and no need to remove from the hardware config?

The physical connection, just unplug and no need to turn on the terminator there?

Thanks again.

mopS04

hi jruz1,

I corrected the link in the post above.

no, you don´t need to remove the note in the HW config? When you don´t have the node in the HW-config, there is nothing to deactivate.

The resistor is for termination on the end of the line. So if there are other nodes and you are ion the middle of the line, you would cut them off. If the node you want to deactivate is at the end of the line, you should put the resistor on at the node before the deactivated node, on the new last node at the end of the line.

hope this helps,

regards,

 Hi, Thanks so much for clarifying on that matter.

Regards,

Jcruz