Taking off drives from profibus

Dear,

expert 

could i take off the drive from machine bypass it from network as you will see by attachment? If yes , what are the proper steps to get it done?

Regards,

Online?

SFC12 may be the solution.

hazem

Dear,

expert 

could i take off the drive from machine bypass it from network as you will see by attachment? If yes , what are the proper steps to get it done?

Regards,

 It's possible but you have to insert the suitable error OB in order to avoid entering the Stop mode.

Ayman Elotaify

 

 It's possible but you have to insert the suitable error OB in order to avoid entering the Stop mode.

If you use SFC12 to activate / deactivate, there will be no error Interrupt.

IBN-Service

 

Ayman Elotaify

 

 It's possible but you have to insert the suitable error OB in order to avoid entering the Stop mode.

 

If you use SFC12 to activate / deactivate, there will be no error Interrupt.

Dear Jurgen,

 For sure your solution is better.

I should try it soon and check what will happen with Report System Error when removing a Profibus / Profinet node.

Dear,

How about hardware connection modifications?

hazem

Dear,

How about hardware connection modifications?

Removing the plug?

Or what do you mean?

hazem

Dear,

How about hardware connection modifications?

 That's another issue.

If you want to make this, then you should think about CiR "Configuration in Run"

Here's some of many links to learn more about CiR.

• Which are the hardware requirements for CiR (Configuration in Run) at SIMATIC PCS 7 V6?
• What should you watch out for when reconfiguring in RUN (CiR) if the configuration contains CiR elements and a PROFINET IO system?
• SIMATIC STEP7 V5.5 Modifying the System during Operation via CiR
• Which DP slaves can be added to and removed from a PROFIBUS DP master system using the CiR function (Configuration in RUN) and which configuration changes are permissible?

Hope this helps.

Dear,

I am going to disconnect drives and use it somewhere else , so i have two issues . Software & hardware issues , the addressing , the end loop connection as it is inside the loop no at the end,

Regards,

hazem

Dear,

I am going to disconnect drives and use it somewhere else , so i have two issues . Software & hardware issues , the addressing , the end loop connection as it is inside the loop no at the end,

Regards,

 Hello,

We have to identify first the type of network:

To take drives or other nodes out of the network to re-use in other system. 
You can go with Jurgen Solution by use SFC 12. It will allow you to de-activate any node without having errors on the CPU. You will need to make some programming, better to make it in the HMI screen to select which node you would like to de-activate or re-activate.
 My solution provided is possible but  Bus Fault led will lit.If your system or downloaded software don't have error OB or SFC12, then you should stop the CPU.

For both of the above solutions, here's the procedure.

• For PROFIBUS network
  For both of the above solutions, here's the procedure.
  • Select which node you need to de-activate by using SFC12 (You should enter the MODE and LADDR inputs of SFC12)
  • Switch off power of the drive or node you would like to remove.
  • If the bus connector of this drive or node are not last one, chage the termination
  • Remove bus connector and keep Profibus cable connected to it.
  • Then remove other connections and take off the drive off. 
• For PROFINET network
  For both of the above solutions, here's the procedure.
  • Select which node you need to de-activate by using SFC12 (You should enter the MODE and LADDR inputs of SFC12)
  • Switch off power of the drive or node you would like to remove.
  • check that all nodes you would like to keep in the network will be conneceted to the switch. If profinet nodes are connected in daisy chain in a ring topology, check that when you open the ring, all other nodes will have a connection to the main controller.
  • Then remove other connections and take off the drive off.

hazem

I am going to disconnect drives and use it somewhere else , so i have two issues . Software & hardware issues , the addressing , the end loop connection as it is inside the loop no at the end,

 Hello

If you are removing the drive temporarily and intend to install it back after some time, then SFC12 based procedure as suggested by  IBN-Service and Ayman Elotaify  is what you need to follow.

However if you intend to Permanently remove it, and do not intend to put it back, then you need to remove it from the Hardware Configuration also and remove all references to the drive in your user program.

Be sure that the drive is not interlocked to any other operations in your PLC. Otherwise these interlocks will also have to be modified .

 The Modified Hardware configuration will have to be compiled and downloaded to the CPU .
Also the Modified program will need to be downloaded.

Hope this helps
Cheers
Navnag

Dear,

Everybody who suggested help, i did remove drive and external i/o peacefully , it was easy as long as the deviced isn't selected in the loop( touch screen) only all i got , buss failure alarm but plc is in run mode and work perfect plus some emergncy switch faults ,it came via i/o on profibus network  i had removed , i bypassed and run sytem after i got all the parts i needed it