Hello Cristian;
When you select PPO1 for your drive exchange format, you will be given input and ouput addresses in the Profibus configurator.
Say this address is 256; that means that PIW256/PQW256 is the start address of the PKW zone (4 words) which you will use to read/write parameter values; PIW264/PQW264 is the address of the Control word (PZD1)and PIW266/PQW266 is the address of the Speed Reference word (PZD2)for your drive.
Now try this:
In OB1 (or any called block) write the 3 following moves [adapt the addresses to the ones provided for your drive by the configurator]:
-MOV (hex)047E to PQW264
-MOV (hex)2000 to PQW266
-MOV (hex)047F to PQW264
Your drive should start, Counterclockwise, at 50% of the maximum parametrized speed.
The Control Word is construct of 16 bit values, each one has a specific meaning for the drive; using hex values simply combines the 16 bits into a single value. Starting the drive implies providing a rising edge on bit 0 of the Control Word (description od all bits in the control word is provided in the manual I suggested in my first post to you); writing (hex)447F will make the motor run Clockwise because bit 14 controls the rotation of the motor.
The speed is controlled by the value in PZD2:
-(hex)4000 represents 100% parametrized speed
-(hex)2000 represents 50% parametrized speed
-(hex)1000 represents 25% parametrized speed and so on.
Reading PIW264 and PIW 266 will allow you to see the Status bits and the Speed feedback of the drive.
Hope this helps,
Daniel Chartier
Edit:
I just checked the link I had posted earlier on my reply, and it seems it was faulty. Sorry for the mistake. Here is a correct version:
http://www.plctalk.net/qanda/showthread.php?t=10631