PPO type: How to get this info is that define by the length of the I/o?

Hi,

I am new to programming so please excuse if  this is silly, I am trying to program profibus slave 1242-5 which is fine, but I have been asked about the PPO type for this? how to get this info is that define by the length of the I/o?

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Split from questions about Profibus communicaion.

Hello sajz;

PPO is a term used exclusively for Profibus data exchanges in the Profidrive profile; "PPO" is used when using a ProfiDrive-enabled drive as a Profibus slave (from Siemens, ABB, Danfoss...), to set the data exchange structure between the master and the slave (also known as telegrams).

The screenshot below will show you the 5 available PPO structures, from the MicroMaster Profibus Option Board manual.

https://support.industry.siemens.com/cs/ww/en/view/6586565

This question about PPO between a Profibus-DP master and a CM 1242-5 as Profibus slave has no application, since Profibus data exchanges between a master and i-slave (intelligent slave) are freely established on configuration, both in the master and the slave.

To setup the CM 1242-5 as a slave in the master's configuration, you will need to integrate the gsd )file for the slave module  (in the master's Profibus  configurator):

https://support.industry.siemens.com/cs/it/en/view/49852283

Once that is done, you need to establish the data exchange configuration between master and slave. The following discussion could help point you in the right direction:

https://support.industry.siemens.com/tf//ww/en/posts/s1200-profibus-cm-1242-5-slave-and-ge-plc-as-a-master-configuration/73848?page=0&pageSize=10

See the Operating Instructions for CM 1242-5 for more technical details: 
https://support.industry.siemens.com/cs/it/en/view/61029535

Hope this helps,

Daniel Chartier