PTA9B01 FAQ
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Q:
Dear
I am currently using the PTA9B01 PT100 RS485 sensor module and have a specific question regarding the jumper settings labeled A, B, C, and D on the PCB.
While I have reviewed the available documentation and the Modbus RTU protocol guide, I could not find any reference or explanation regarding the purpose or configuration of these jumpers. Could you please clarify the following:
What are the functions of the jumpers A, B, C, and D?
Are they related to sensor configuration (e.g., 2-wire or 3-wire PT100) or other operational parameters?
Are there specific settings required for proper operation under certain conditions?
Your guidance would be greatly appreciated, as it will help me optimize the use of this module in my application. If possible, could you also provide any additional documentation or examples related to these jumper settings?
Thank you for your support. I look forward to your response.
Best regards,
A:
Dear friend, the ABCD jumpers are for expansion and currently have no function.
2-wire and 3-wire are distinguished by wiring. You can refer to the wiring diagram in the manual.
Q:
Subject: Inquiry About Calibration Methods for PTA9B01 (Single-Point or Two-Point Calibration)
Dear
I am currently using the PTA9B01 PT100 RS485 module and have a question regarding the calibration process. Specifically, I would like to understand how to achieve accurate temperature readings and whether the module supports a two-point calibration method.
Typically, calibration involves using:
Ice water (0°C) as a reference for the lower end of the scale.
Boiling water (100°C) as a reference for the upper end of the scale.
This method helps to adjust both the offset and the scale factor of the readings. However, the PTA9B01 documentation mentions only a single register (0x0004) for temperature correction and (0x0005) for resistance correction. I would like clarification on the following:
Does the PTA9B01 support a two-point calibration process? If so, could you provide guidance on how to perform it with the module?
If only a single-point calibration is supported, what is the recommended method for achieving the best accuracy across the entire range?
Are there any additional settings or parameters (beyond 0x0004 and 0x0005) that could help in improving accuracy?
Any additional documentation or examples would be greatly appreciated to ensure proper use and calibration of the module.
Thank you for your support, and I look forward to your response.
Best regards,
A:
Dear friend, PTA9B01 does not have two-point calibration function. And it cannot provide accuracy.
Q:
Dear [PTA8C04 Team],Thank you for your prompt and helpful response regarding the ABCD jumpers and wiring configurations.We are currently working on a series of videos dedicated to showcasing your PTA9B01 product. As part of this project, we are developing a comprehensive web interface to facilitate both data reading and configuration settings for your module.In this initiative, I am collaborating with my advanced AI assistant, Clara, who is actively contributing to the software design and technical implementation. Together, we aim to highlight the full potential of the PTA9B01 and demonstrate its versatility to a broader audience.Please let us know if you have any additional materials, updates, or suggestions that could enrich this project. We would also be delighted to share our progress and results with you once completed.Thank you once again for your support.Best regards, Raffaele & Clara
A:
Dear friend, thank you very much! PTA9B01 has fewer functions, and we have mentioned all its functions.
PT21A01 is an upgraded version of PTA9B01, which can directly replace PTA9B01, but its functions and performance are stronger than the old version.
https://1drv.ms/u/s!Av4PLxH_z8f1nCH2no9bRmobgVbn?e=6Edv02