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Modbus ,Error status ( MB_MASTER ) 8200,8383

11/4/2010 9:41 AM	Rate (0)
Nemak Advanced Member Joined: 8/4/2010 Last visit: 2/5/2025 Posts: 7 Rating: (0)	Hi guys . I have problem with Modbus RTUcommunication on S7-1200 . My problemsare Error status ( MB_MASTER ) 8200 and 8383 . Do you know , how is the best solution for this problem ? Thank you

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11/4/2010 8:36 PM	Rate (0)
jklm Platinum Member Joined: 12/22/2006 Last visit: 1/25/2022 Posts: 1742 Rating: (309)	Hello, Code 8383 indicates that the partner answers with error code 2, which means that the address specified in the request is not vailable: - wrong register number, register not available - wrong type (hold register instead of input register for instance, ...) Check the manual of the partner about avialable registers. Sometimes you must interprete the documentation. You may find in the documentation that a given register has address 40001, but at MB MASTER block you should address register 1 and not 40001 (because all addresses in the range 40000 are "holding registers"..)
	Last edited by: jklm at: 11/4/2010 8:37 PM Best regards jklm Suggestion was helpful? Feel free to rate it.
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11/5/2010 1:29 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello jklm, just a small correction: usingModbus communication, address 0 of the data link layer refers to address 40001 of the application layer. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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2/16/2014 1:51 PM	Rate (0)
GrasserF Posts: 340 Rating: (6)	new question is splittet to modbus communication s7-1200 with vfd (LS-iG5A), error in status 8081.
GrasserF Posts: 340 Rating: (6)
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11/26/2017 7:53 PM	Rate (0)
msige70 Advanced Member Joined: 3/8/2015 Last visit: 3/6/2025 Posts: 14 Rating: (0)	Tx! you help me!

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