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Modbus Sample Project Simatic Manager

Created by: Saravana kumar at: 6/13/2010 3:54 PM (131 Replies)

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6/13/2010 3:54 PM	Rate (9)
Saravana kumar Gold Member Joined: 2/6/2009 Last visit: 8/19/2024 Posts: 939 Rating: (118)	Dear All, Attached is the sample project for the Modbus communication between CP341, CP 340 and 1Si (Master) and the third party (slave) devices. Manual for slave devices used in program backup also integrated in the attachment. Main driver block is FB50 (Modbus standard block) andthis block should be called for each master module. Blocks associated with the FB50 is, FB 7 = Modbus_Rcv (Siemens standard block) FB 8 = Modbus_Send (Siemens Standard Block) DB1 = Send list DB (Modbus Queries list) DB3 = Modbus Misc DB4 = Modbus Data (Received Data’s) Advantages of using this block, You can set more then one query to the modbus slave devices, Max 128 queries. Communication failure status for each query is available in IDB. No need to use pulse time for query increment. Jump from one query to next query is depending on the status of the previous query. Receive list DB offset can be entered directly in the Sendlist DB (at each query structure). You can call the FB 50 multiple times inside the program with the associated blocks for the one more Modbus Master module (CP341, CP340 or 1Si). Use Modbus variable table in the sample project for testing of your devices. Use the Modbus block and achive communication tasks quickly and easily without any problem. Please revert back for any clarification. Attachment MODBUS_V6.0.zip (4544 Downloads)
	Last edited by: Saravana kumar at: 6/19/2014 1:49 PM Last edited by: Saravana kumar at: 9/14/2013 9:28 AM Last edited by: Saravana kumar at: 8/22/2013 1:41 PM Last edited by: Saravana kumar at: 6/24/2013 12:25 PM Please download the Attachment from the recent thread Last edited by: Saravana kumar at: 6/24/2013 12:20 PM Last edited by: Saravana kumar at: 6/24/2013 12:19 PM Hi, Uploaded is the updated version of Modbus Sample project V5.0. The current backup contains Program for Modbus modules CP 341, CP 340 and 1SI as Modbus masters with a standard slave devices. ************************************************************************************************ Version V5.0 //Program for CP341 with sample program for Enercon EM6400 Meter //Program for CP 340 with sample program for Enercon EM6400 Meter //Program for 1SI with sample program for AREVA Ai205 Meter Last edited by: Saravana kumar at: 4/20/2015 7:00:41 AM Last edited by: Saravana kumar at: 9/23/2015 8:45:53 AM Version V6.0 Modbus Block WIthout Block Privacy //Program for CP341 & CP 340 with sample Logic for Enercon EM6400 Meter //Program for 1SI with sample Logic for AREVA Ai205 Meter Last edited by: Saravana kumar at: 9/23/2015 10:26:24 AM Last edited by: Saravana kumar at: 12/6/2016 6:31:08 AM _______________________________________________________________ Best Regards T.Saravana Kumar "All for the Best"
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This contribution was helpful to 27 thankful Users UMENCHO Ton Verra Lucky123 Ayyappan scbe Makenza Q121 linhmoi CVS Murali Rajendran iNano sorooshi Ste39 S7 AUTOMAN DM2artist meysam125 bjreddy Vania Priam bariskocagoz@gmai... Sankar DineshK AutoGen_917935 Maruthakasi_S tapantester Rick66 Cap.Scorpion

6/14/2010 1:05 PM	Rate (0)
Valli Posts: 262 Rating: (45)	thanks buddy it is really helpful... Just like to share that know a days we are insisiting client to go for SIEMENS PAC devices.. i.e. 3100, 3200 & 4200.... instead of EM of conzerve. PAC 3200 has ethernet port inbuilt through which we actually by pass DCS and almost all the wiring and programming ... for details refer the below link :- https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=7KM21111BA003AA0&caller=view make full use of it and recommend the same form the our product basket
Valli Posts: 262 Rating: (45)
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1/25/2011 8:23 AM	Rate (0)
AnsuAbinesh Experienced Member Joined: 12/14/2010 Last visit: 9/4/2024 Posts: 116 Rating: (0)	Dear Saravanakumar, Thanks for your programm,its very helpful for me. Here i have used 19noEM6400 CONZERV meter.and also i send one slave device to3 send quirey .Totaly19*3=57 send quiery.and also iam used your programm only. here i can able to get data from slave 1 to slave 13. Remaining slave 14 to salve 19 datas are im not geeting.I got communication failureerror in your misc db from query40 to 57. How can i getting remaining salve datas from node 14 to19. In your programm only 13 slave possible? And also i have one doubt in fb50.in that fb50 you used network2. network2 L #module reset time_run L 13 >I You mentioned 13 for what? no of slave or any thing else? Kindly give us solution. Thanks in advance.. im in bottle neck

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4/13/2011 7:22 AM	Rate (0)
majoi Posts: 19 Rating: (0)	Dear Saravanakumar, Is it possible if i change to Modbus RTUmaster protocol. Will it work? I need to establish connection between CP341(master)and SEPAM(slave) Appreciate your help. Thank you
majoi Posts: 19 Rating: (0)
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4/13/2011 8:14 AM	Rate (0)
Saravana kumar Gold Member Joined: 2/6/2009 Last visit: 8/19/2024 Posts: 939 Rating: (118)	HI, Yes, you can use the program for your configuration.
	_______________________________________________________________ Best Regards T.Saravana Kumar "All for the Best"
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4/13/2011 9:49 AM	Rate (0)
bermuda Posts: 151 Rating: (3)	hello my friend siemens pac module doesn't support modbus rotocol. you can use profibus network instead of modbus, it's very simple and there are very source code for profibus. \
bermuda Posts: 151 Rating: (3)
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4/13/2011 11:17 AM	Rate (0)
majoi Posts: 19 Rating: (0)	Saravana kumar HI, Yes, you can use the program for your configuration. Dear Sir, Now there areTx and Rx on my CP but my SEND status always indicate 0830 with error. Fyi, im using MDbus(on myPC)as slave and there is ADAM-4522 for Rs232/rs485 converterin between. Appreciate your help. Thank you. Rgds, majoi
majoi Posts: 19 Rating: (0)
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4/14/2011 11:44 AM	Rate (0)
majoi Posts: 19 Rating: (0)	majoi Saravana kumar HI, Yes, you can use the program for your configuration. Dear Sir, Now there areTx and Rx on my CP but my SEND status always indicate 0830 with error. Fyi, im using MDbus(on myPC)as slave and there is ADAM-4522 for Rs232/rs485 converterin between. Appreciate your help. Thank you. Rgds, majoi Its working now...Thanks all!
majoi Posts: 19 Rating: (0)
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4/14/2011 2:41 PM	Rate (0)
AnsuAbinesh Experienced Member Joined: 12/14/2010 Last visit: 9/4/2024 Posts: 116 Rating: (0)	Dear Saravana kumar, Here i have used your modbus programm with same EM6400 conzerv meter. As i have facing problem in reading ofwatt hour(wh) parameter. This watt hour parameter is some times matching with meter value and some times mismatch with meter value. I means valuesup and down coming in reading of watt hour parameter.I thought you also reading same watt hour parameter.If youalso facing same problem in watt hour parameter update me. for further detailshere i have attached screen shots for your reference. Kindly give us solution Thanks for advance. Attachment EM6400 KWH trends.gif (1519 Downloads)

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4/15/2011 3:56 AM	Rate (0)
Saravana kumar Gold Member Joined: 2/6/2009 Last visit: 8/19/2024 Posts: 939 Rating: (118)	Hi, I did't faced any problem in reading KWH reading. I have an idea to solve is that you just manullly count the running hours of the EM6400 inside the PLC logic and multiply that value with Watts. Hope this helps.
	_______________________________________________________________ Best Regards T.Saravana Kumar "All for the Best"
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