cant understand this holding registers #959
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Pymodbus Specific
Descriptionhi, i am trying to read the power meter value through modbus tcp/ip Slave ID, 1, (0x01) RX (Response) this is the reading that i got , Code and Logs # code and logs here. |
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Replies: 3 comments 3 replies
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On which address starts the power meter value and where does it ends? What does the doc say? |
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thats the issue , i am not sure which address i suppose to be reading , |
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I would recommened: Read the docs of your device. We can't help you here, since the only thing we can see is: "Yep! This seems to be an successfull read of the holding registers!" |
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Reading 120 registers in one go, is going to the limit (255 bytes is max.), and will cause problems in a number of devices. Make 2 reads each of 60. But reading your description it seems there are no problem, it would help if you wrote where you see a problem. |
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Furthermore I looked over the Schneider implementations I have (including some power meters) and none have 120 holding registers....are you sure your meter have that many holding registers ? The load profile in the power meter, have much more values, but normally read that with the file command. |
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yes, i guess i was reading it wrong , still trying to making sense of the values . i have got the modbus register mapping doc . |
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Reading 120 registers in one go, is going to the limit (255 bytes is max.), and will cause problems in a number of devices. Make 2 reads each of 60.
But reading your description it seems there are no problem, it would help if you wrote where you see a problem.