Communication issues between jx-300xp and flow meter
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The flow meter uses Modbus communication, and the DCS is Zhejiang University Zhongkong JX-300Xp. I can only read the cumulative flow value of 811. Could any expert help me?
Bro, I need to get a 248 communication card first. It’s more cost-effective to read an AI value and perform the traffic calculations oneself; a communication card costs around 20k, so is this budget worth it just to read the cumulative traffic volume? :)
It is connected directly to the Modbus communication card of Zhejiang University’s ZK-JX-300Xp; key parameters such as the baud rate and parity check need to be set. Additionally, the instrument must be capable of outputting the cumulative flow rate directly, otherwise the flow value has to be calculated first
Yes, the 248 card is too expensive; there’s no need for it
I am looking for a communication program DCS for Zhejiang University Zhongkong JX-300xp
There should be such a routine in the help manual!
If communication is successful, then you need to know the address table of the MODBUS data registers in the flow meter. Otherwise, you won’t know which one is the PV value