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viganabd / nmodbus

Automatically exported from code.google.com/p/nmodbus
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Consistent checksum error when requesting read multiple registers #37

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?
1. Send read multiple register request
2.
3.

What is the expected output? What do you see instead?
Checksum in read multiple register request should be dependent upon the 
data being sent.  The checksum is consistently 0x0C10 regardless of the 
data being sent.

What version of the product are you using? On what operating system?
v1.8.0.0 (was also seen in 1.6.0.0).

Please provide any additional information below.
Please see attached Wireshark screenshot.

Original issue reported on code.google.com by whgross@gmail.com on 29 Sep 2008 at 7:18

Attachments:

GoogleCodeExporter commented 8 years ago 
Neglected indicating the OS:  Windows XP Pro v2002 SP3

Original comment by whgross@gmail.com on 29 Sep 2008 at 7:21

GoogleCodeExporter commented 8 years ago 
Please see attached Wireshark file.

Original comment by whgross@gmail.com on 29 Sep 2008 at 7:38

Attachments:

GoogleCodeExporter commented 8 years ago 
This appears to be a TCP problem, not an NModbus problem.

Original comment by whgross@gmail.com on 30 Sep 2008 at 3:52

GoogleCodeExporter commented 8 years ago

Original comment by sja...@gmail.com on 24 Nov 2008 at 6:32