M221 and SoMachine Basic

Blevine

Member
Join Date
Mar 2018
Location
Leicester
Posts
9
Hi guys,

I'm using M221 PLC from Schneider with Somachine Basic, and I have two problems as of the moment.

1. It seems like my software is not getting the actual value from my pressure sensor. There are discrepancies, like 50, sometimes 80. Is there a way for me to calibrate my sensor or do something using the PLC function blocks?

2. I can't read the modbus values even when using modbus reader like doctor, modbus simulator, etc. Kindly help?

I'm a beginner so, please extend some patience in answering my questions. Thanks a lot! Have a great day!
 
Thank you Garry! I will look into these.

Do you have any idea about the modbus register/address for the M221 PLCs? I would need some registers and read it using some modbus simulator/reader. Any idea will be of help!

Blevine
 
http://www2.schneider-electric.com/resources/sites/SCHNEIDER_ELECTRIC/content/live/FAQS/240000/FA240029/en_US/Modbus%20TCP%20Slave%20Device.pdf

I would start with the above document on Modbus Addressing.

I would use AdvancedHMI for the testing. It is capable of testing your communications and offers a good HMI interface. (This is a free package that runs on visual studio.)
https://sourceforge.net/projects/advancedhmi/

This link will help get you started with AdvancedHMI:
http://accautomation.ca/create-a-plc-with-hmi-training-and-learning-environment-free/

Regards,
 

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