Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

combox-p communication with siemens S7400 PLC

Created by: Amit_86 at: 12/2/2009 8:06 AM (17 Replies)

Rating (0)

Thanks 7

Result pages:: |; 1 | 2; |

18 Entries

Entries per page: 10 | all

12/2/2009 8:06 AM	Rate (0)
Amit_86 Platinum Member Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272)	Dear Sir/Madam, I have a project as follows : supervise three air compessors of AtlasCopco via Profibus. Atlas have supplied the Combox-P to communicate 3nos compressor to Profibus over Siemens PLC S7 400 (CPU 414-3PN/DP). I have manual(9820_3582_03__User_Guide_MKIV_Profibus_Edition_06) and GSD file . Though my slave connections are ok but i could not fetch any good data. Also i have asked support from Atlas but unfortunately they don't know much about PLC side. i am using SFC14 for reading the data. but as it it master slave comunication something needs to be send from master PLC to receive appropriate data.I request you suggest how to program the blocks in s7 PLC for sending and receiving data. Please do forward me the example S7 project. Expecting your reply. Thanks in Advance. Amit Bhajikhau
	Last edited by: amit_86 at: 12/2/2009 8:07 AM VANDE MATARAM.....
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users Mogomotsi

12/2/2009 12:15 PM	Rate (0)
Hulzhex Gold Member Joined: 8/25/2005 Last visit: 10/5/2024 Posts: 1162 Rating: (111)	Hello amit_86, ok, you said data exchange is ok? Slave and master are communicating? Maybe you could publish a screenshot of the hardwareconfiguration of the slave (with the properties) And from the hardwareconfiguration online? Hope that we could find there some information which will be helpfull to answer your question. Best regards Sabine

Suggestion To thank Quote Answer

12/2/2009 5:08 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 10/14/2024 Posts: 12287 Rating: (2685)	Hello amit_86; Maybe the sequence proposed by uel123 in the following link can help you out clear the matter out: /tf/WW/en/Posts/13246 Hope this helps, Daniel Chartier

Suggestion To thank Quote Answer

12/3/2009 5:57 AM	Rate (0)
Amit_86 Platinum Member Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272)	Dear Hulzhex, i think you didn't get my question. i have mentioned that my slave device is ok but i didn't get any good data.that meansslave is sucessfully configured in hardware. thus iam not getting any bus fault. please tell me how to program blocks in Step7. Please do forward me the example Project. Thanks in advance.
	VANDE MATARAM.....
Suggestion To thank Quote Answer

12/3/2009 6:02 AM	Rate (0)
Amit_86 Platinum Member Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272)	Dear dchartier, Thanks for your support.I have already gone through that link.butthere is nothing mention in the link how to progrm the blocks in step7. Please do forward me the exampleproject for the same if any available. Thanks in advance.
	VANDE MATARAM.....
Suggestion To thank Quote Answer

12/3/2009 10:13 AM	Rate (0)
Hulzhex Gold Member Joined: 8/25/2005 Last visit: 10/5/2024 Posts: 1162 Rating: (111)	Hello amit_86, please publish a screenshot of the properties of the slave within the hardware configuration. There we should found the information about consistency of your I/O data. With this information we could decide wether SFC14 is necessary or not. Best regards Sabine

Suggestion To thank Quote Answer

12/5/2009 8:20 PM	Rate (0)
uel123 Gold Member Joined: 1/29/2006 Last visit: 9/11/2024 Posts: 446 Rating: (64)	amit_86 Dear Sir/Madam, I have a project as follows : supervise three air compessors of AtlasCopco via Profibus. Atlas have supplied the Combox-P to communicate 3nos compressor to Profibus over Siemens PLC S7 400 (CPU 414-3PN/DP). I have manual(9820_3582_03__User_Guide_MKIV_Profibus_Edition_06) and GSD file . Though my slave connections are ok but i could not fetch any good data. Also i have asked support from Atlas but unfortunately they don't know much about PLC side. i am using SFC14 for reading the data. but as it it master slave comunication something needs to be send from master PLC to receive appropriate data.I request you suggest how to program the blocks in s7 PLC for sending and receiving data. Please do forward me the example S7 project. Expecting your reply. Thanks in Advance. Amit Bhajikhau Hey, amit_86! I am sending you a example of my code for communication with ATLAS-COPCO through Combox-P gateway. In my case, I am reading 6 parameters (=actual values) from 2 compressors. You can easilly expand this to more compressors. But first, please read the post on link, which was sent to you from Daniel Chartier. And also, additionally: 1. Combox must first be properly programmed (I believe, by Atlas Copco people). The telegram lenght must be properly set on COMBOX side. See the telegram lenght from my example, in HW config. 2. At the time, when I was dealing with this problem (in year 2007), I could not find a GSD file for Combox anywhere. Therefore, I have written it for myself, according to instruction from manual for Combox, that was available at the time.As you will see in my project, I could not establish a greater consistency then 1 byteand I am not using SFC14/15. If you manage to work with another GSD file (and establishbigger consistency!), then simple replace NW 21 and 22 in FB 510 withSFC14/15. Have fun! uel123 Attachment Atlas_co.zip (3469 Downloads)

Suggestion To thank Quote Answer
This contribution was helpful to 3 thankful Users AutoGen_1044620 Hattis Alex Zhukov

12/9/2009 12:05 PM	Rate (0)
Amit_86 Platinum Member Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272)	Dear uel123, in my case data record is of 16 bytes. Can address ofcompressors are 1,2,3 respectively.and profibus address is 10. i want toconfirm that i have to change header byte if my data record is 2. right? please reply.
	Last edited by: amit_86 at: 12/9/2009 12:07 PM VANDE MATARAM.....
Suggestion To thank Quote Answer

12/9/2009 1:05 PM	Rate (0)
uel123 Gold Member Joined: 1/29/2006 Last visit: 9/11/2024 Posts: 446 Rating: (64)	amit_86 ... in my case data record is of 16 bytes. Can address ofcompressors are 1,2,3 respectively.and profibus address is 10. i want toconfirm that i have to change header byte if my data record is 2. right?..... Hey, Amit! I would say YES. My example is written for 1 data record, because it seemed simpler for me..... The exact example for 2 data records is written in Manual, chpt. 5.1, 5.2 and 5.4. Pay attention on SYNC bits, they must be changed for everydifferent Data request! Have fun! uel123

Suggestion To thank Quote Answer

12/14/2009 6:39 PM	Rate (0)
uel123 Gold Member Joined: 1/29/2006 Last visit: 9/11/2024 Posts: 446 Rating: (64)	Hey, Amit! Any success with Combox-p and Atlas copco? have fun! uel123

Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Follow us on