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Modbus communication 0E62H error code

Created by: SVg at: 3/24/2011 8:41 PM (10 Replies)

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3/24/2011 8:41 PM	Rate (0)
SVg Posts: 50 Rating: (1)	Hi All, I am using modbus master CP341 trying to communicate with Easygen3200 woodword device But i m getting the error status Code 0E62 H I am not able to fix this problem Please help me out Thanks in advance
SVg Posts: 50 Rating: (1)
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3/25/2011 2:36 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 4/17/2025 Posts: 3047 Rating: (1061)	HelloSVg Error 0E62hex can be found in theCP MODBUS RTU protocolS7 is master manual on page 90and means: " Reply message with Exception Code 02: Illegal data address" What thismeans in plain english is that you did succesfully send a (request) message to the Modbus slave to read whatever Modbus registers from it and that the Modbus Slavereplies with "Sorry,I do NOT have the Modbus registers that you requested to read from me". To fix this you'll need to check the manual of the Modbus Slave to see what registers can be read and make sure you request complies with it. If still unsure please let us know what registers you intend to read (as per modbus Slave manual) and upload your S7 project to see whatregisters you are actually trying to read. I hope this helps
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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This contribution was helpful to 2 thankful Users dchartier smiffy

3/25/2011 6:19 AM	Rate (0)
SVg Posts: 50 Rating: (1)	Hi Thanks for the reply I am trying the same with Modsim software but at that time also same error code is coming Is there any problem at plc side or slave side Thanks in advance
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3/25/2011 8:24 AM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 4/17/2025 Posts: 3047 Rating: (1061)	SVg Is there any problem at plc side or slave side Hello SVg gut feeling tells me that it is on the PLC side (I wonder what register numbers you are requesting), but I can only speculate here without being able to look at your PLC code. Please upload your S7 program here and give us the information about what registers you intend to read.
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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3/25/2011 9:13 AM	Rate (0)
SVg Posts: 50 Rating: (1)	Hi Fritz thanks for reply Please see the attched uploading modbus master plc backup Please help me out Thanks in advance Attachment Modbus_s.zip (228 Downloads)
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3/25/2011 4:30 PM	Rate (0)
SVg Posts: 50 Rating: (1)	hi All, Please help me out solving this particular problem Thanks in advance
SVg Posts: 50 Rating: (1)
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2/24/2017 9:45 AM	Rate (0)
Sankar Experienced Member Joined: 12/2/2010 Last visit: 4/2/2024 Posts: 61 Rating: (0)	Hi, How you overcome with the discussed issue? am facing the same issue in my current project? Thanks, Sankar
	Regards \ Sankar
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2/24/2017 10:11 AM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello Sankar, exception code 2 is sent by the slave when the master accesses a register/coil address which is not available in the slave or when the client tries to write a "read only" address in the slave. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)	Last edited by: Kaulquappe at: 2/24/2017 1:29:34 PM
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This contribution was helpful to 1 thankful Users Sankar

2/25/2017 6:27 AM	Rate (0)
Sankar Experienced Member Joined: 12/2/2010 Last visit: 4/2/2024 Posts: 61 Rating: (0)	Hi, My program settings are below. Slave ID: 1 Function code: 4 Starting address: 7 No. of registers : 2 and the attached manual is for Modbus slave registry details. Hope, my setting are ok in program. if anything , i have to try, pls. let me know. Attachment P642 P643 P645 - MODBUS MAPPING DETAILS.PDF (218 Downloads)
	Last edited by: Sankar at: 2/27/2017 4:49:57 AM Regards \ Sankar
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2/27/2017 12:29 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello Sankar, address 30001 of the application layer refers to function code 4 and address 0 of the data link layer, so you must subtract 30001 and start with 6. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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This contribution was helpful to 1 thankful Users Sankar

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