KY WONG

Problem of qj71c24N for modbus RTU control 2

4 posts in this topic

Posted (edited)

Hi friends,  

I am facing a problem. When my device is suddenly disconnect with RS485 modbus connection, my QJ71C24N card is not no error coming out and it refuse to continuous sending out signal even my program is keep calling on for G(P).CPRTCL . How can I reset the situation without turn off my PLC and how can I detect it which is not given me any error condition?  @Wasan @kaare_t

Edited by KY WONG

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@KY WONG Maybe you should switch M that enable G.CPRTCL to Off and then Enable it again.

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Because there is no any error is given by the plc . I think my system is waiting for the answer from external device. Is there any place can adjust the waiting message ? 

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@KY WONG You can adjust protocol parameter at Pre-Defined Protocol on blue area.

QJ71C24N_Adjust_01.jpg.0a4f029bdd02fa173

Then you can adjust parameter.

QJ71C24N_Adjust_02.jpg.aba1362beb664c415

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