4/16/2012 12:14 PM | |
Posts: 153 Rating: (2) |
thanks a lot i will do the same and check ...
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4/16/2012 12:42 PM | |
Posts: 153 Rating: (2) |
if i want to show data on hyper terminal which is send by CP card what i have to do?? |
4/16/2012 4:03 PM | |
Joined: 4/19/2008 Last visit: 9/3/2024 Posts: 1525 Rating: (159) |
Hello Anit, You can Download the Modbus Scanner From here |
Ammy |
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4/17/2012 1:09 PM | |
Joined: 12/1/2009 Last visit: 9/5/2024 Posts: 672 Rating: (147) |
Dear Anit , |
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4/18/2012 6:37 AM | |
Posts: 153 Rating: (2) |
yes TIBI68, you are correct but instead of Modsim , I am using Modscan32 and I attaching it also...... If some one having tested slave program to write data when requested , please provide me...
Attachmentmodscan32.zip (146 Downloads) |
4/18/2012 7:11 AM | |
Joined: 12/1/2009 Last visit: 9/5/2024 Posts: 672 Rating: (147) |
Sorry for the mixing of the two simulatorsmodsim & modscan . |
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4/18/2012 10:33 AM | |
Posts: 153 Rating: (2) |
Now I am leaving all these things and coming to very basics : I have attached screen shots of my hardware and plc program, kindly check whether my confguration is correct?? In plc program i have copied all blocks from sample program abd inserted DB1 and trying to read and write data from modscan32 to this DB only can you please tell me I am working in right direction??? Attachmentscreen shots.zip (126 Downloads) |
4/18/2012 11:12 AM | |
Joined: 12/1/2009 Last visit: 9/5/2024 Posts: 672 Rating: (147) |
That's all fine Anit , Now tell me, which modbus addresses are you trying to read from the PLC (slave)? What i am missing is the screen shot of your MODSCAN. Regards. |
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4/19/2012 12:41 PM | |
Posts: 153 Rating: (2) |
Dear Sir, I have taken ModBus Scan as Master and Our CP 341 as Modbus slave. i have provided in CP 341 as base DB as 1 in function code 3. in limits also provide max DB and Min DB as 1. all other settings are same. i downloaded the sample program provided for CP 341 as modbus slave in which FB 80 is used. In Modbus Scan we have taken register starting from address 40001. when i am writing value from master than in base DB at partucular number register we are recieving some value but trying to write in same Base DB from our PLC, still we are not getting any thing on Modbus master. Basically we are able to recieve data from master to slave but when trying to write data from slave to master i am not getting anything. so if anysettings or any thing i am missing please let me know. one thing more that in my master software i am recieving "MODBUS MESSAGE TIME-OUT" still i can recieve data from master to slave. Attachmentmod scan screen shots.pdf (138 Downloads) |
Last edited by: Anit at: 4/19/2012 12:48 PM |
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4/19/2012 1:41 PM | |
Posts: 3093 Rating: (323)
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Hello Anit, and which error does the CP341 report? Just check the output of FB80 and the diagnostic buffer of the CP. Regards, Kaulquappe |
4/19/2012 2:59 PM | |
Posts: 153 Rating: (2) |
I have attached screen shot of diagnostic buffer and event id id 16#F1C8:0836Attachmentuntitled.zip (160 Downloads) |
4/19/2012 3:08 PM | |
Posts: 3093 Rating: (323)
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Hello Anit, obviously it is a bug of the simulation software. It sends either a wrong CRC or a wrong length information. Regards, Kaulquappe |
4/20/2012 7:33 AM | |
Posts: 153 Rating: (2) |
hello smiffy, I have attached screen shots of instant DB with and with out polling from mod scan32. My slave id is 222, parity = even, stopbit=1 and cable connection of cp and cpu as: cp cpu 2 = 3 3 = 2 5 = 5 please solve my problem where I am wrong???? Attachmentinstant_db.zip (151 Downloads) |
4/21/2012 5:47 AM | |
Posts: 153 Rating: (2) |
hello smiffy, Kaulquappe Now my system is running good as well as with modscan and also with another modbus master system. I were making correct parameter setting as you guys discussed. I found some fault in my serial cable , I removed old connectors and placed new connectors only. Anyways thanks a lot.......keep it up
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