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+--- Thread: Modbus TCP broken pipe error (/showthread.php?tid=6048)
Modbus TCP broken pipe error - CristianAgata - 12.07.2025
Hi everybody,
I'm going mad with this error in a modbus TCP application.
I describe the project. Two inverter an ABB and a Huawei the first one works perfectly the second after about 2 days stops works and give me "broken pipe error".
Reading in the forum I have already flagged "permanent connection" change the polling time (growing now 20 sec) and change the timeout (decrease).
On other Huawei with the system works fine.
Any others ideas?
Thanks and best regards Cristian
RE: Modbus TCP broken pipe error - Daniel - 14.07.2025
What is the pool interval, timeout and amount of registers? Any other errors?
RE: Modbus TCP broken pipe error - CristianAgata - 14.07.2025
(14.07.2025, 07:22)Daniel Wrote: What is the pool interval, timeout and amount of registers? Any other errors?
Hi Daniel,
pool interval : 20 sec
timeout : 3 sec
Number of registers : 23
Other errors 'Timeout', 'slave or server are busy' or 'Broken pipe'
Thanks Cristian
RE: Modbus TCP broken pipe error - Daniel - 14.07.2025
3sec x 23 = 69sec. Set pool interval around this and restart inverter.
RE: Modbus TCP broken pipe error - CristianAgata - 14.07.2025
(14.07.2025, 13:39)Daniel Wrote: 3sec x 23 = 69sec. Set pool interval around this and restart inverter.ok and I let you know
RE: Modbus TCP broken pipe error - CristianAgata - 16.07.2025
(14.07.2025, 13:39)Daniel Wrote: 3sec x 23 = 69sec. Set pool interval around this and restart inverter.
Hi it seems works but it has a lot of error of timeout (I think it could be a register), is there a way to understand which?
Anyway at the moment I have not the broken pipe error.
Best regards Cristian
RE: Modbus TCP broken pipe error - Daniel - 16.07.2025
Try Read test one by one.