chinesium relay board rs485 have data sheet with commands modbus rtu

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22 Jan 2024 04:03 #291305 by smc.collins
www.alibaba.com/product-detail/Modbus-RT...e_1600958662317.html

I want to use this with Linuxcnc, I often need a lot of IO, typically not for anything super time critical RTAI. Just IO for doing random things. They offer these in 4 8 16 and 32 channel configurations. I also got them to kinda give me the entire protocol. So I am looking for a example modbus rtu protocol drive to look at to control these. They may have other useful modules as well. 
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22 Jan 2024 07:28 #291313 by Aciera

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23 Jan 2024 01:29 #291380 by smc.collins
i'll pay someone I am super swamped and don't have time at the moment.

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