PROFIBUS ACS550 -S7 300
I need know how can send
- sped ref.
- read ampers.
I has set comm. and others.
51.xx but I dont understand how I will write and read data from Driver..
ACC550 with RPBA-01 PROFİBUS
S7-300 plc .
don't apologize, surely even my English is not the best, the important thing is that you understand the message and above all that the answer may be of some help.
First, you need to set commands in group 10.01 on COMM.
Then parameters 11.02 and 11.03 on COMM.
Subsequently, parameter 51.01 on ProfiBus, parameter 51.02 will be the number of the node you want to use in your project.
Parameter 51.03 is the communication speed, obviously it must be the same as your PLC. The speed 1500 is widely used.
Parameter 51.04 is the PPO, ie to define how many words will be exchanged between drive and plc.
Check that you have correctly set the GSD file in your PLC.
Update with parameter 51.27 = refresh
At this point, on your PLC you should see in the exchange words the response of the drive, that is the Status Word. For the meaning of the individual bits, read the manual of the RPBA-01.
To start the drive, write in one word - of course in the range on word that the PLC use to communicate with the drive - the value 1151 in your PLC in decimal, or 47F in hexadecimal. To stop the drive, write 1150.
Generally I not use the FC from PLC, because for me it is more convenient to manage the single bits, without an FC that does not allow me to understand how it works
You will then have a fixed part where the CW and the SW are found, the speed reference and the response of the drive.
If you want to read the current, one of the PZD .... IN parameters must be set to 1.04, ie the current - parameter group 1 of the drive, parameter 04 - output current.
I hope I was helpful
cominication parameters is ok. when I chance ppo tye 6 I see that 51.04 is change automaticly 6
I use GSD files ABB and FB ,FC blocks ..
so I has try change many parameters but no results..
where I should be write 1151 ? PZDxOUT ?
And also I seen some numbers on FC501 -- PZD5_scaled =256.0 beacuse that I think its working.
when I chance parameter 51.27 I see PLC SF led is blink..