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CP341 modbus 3964R protocol problem

Created by: aHmp at: 3/28/2019 10:05 AM (5 Replies)

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3/28/2019 10:05 AM	Rate (0)
aHmp Regular Member Joined: 3/12/2019 Last visit: 3/12/2025 Posts: 4 Rating: (0)	HI I HAVE A PROBLEM WITH MODBUS COMMUNICATION I HAVE A PROJECT WITH CPU313C & CP341 RS232 & HMI MONITOUCH V606EM20 . I THINK I CONFIGUERED PARAMETERS CORRECT BUT I RECIEVE THIS ATTACHMENT MESSAGE IN DIAGNOSTIC BUFFER OF CP341. WHY? Attachment Capture.PNG (145 Downloads)

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3/28/2019 11:13 AM	Rate (1)
Kaulquappe Posts: 3093 Rating: (324)	Hello, it looks like the communication partner does not support 3864R or it is parameterized for a different protocol. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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3/28/2019 3:46 PM	Rate (1)
OlafS1 Experienced Member Joined: 6/1/2006 Last visit: 12/17/2024 Posts: 129 Rating: (14)	Hi aHmp, it seems that there is no communication at all. What is the physics you are using on each end? Is the cable the correct one? If using RS485/RS422, did you check the termination resistor settings? What are they? on a side note: Don't use all capital letters as this may be considered yelling/ screaming.

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4/8/2019 12:47 AM	Rate (0)
aHmp Regular Member Joined: 3/12/2019 Last visit: 3/12/2025 Posts: 4 Rating: (0)	Hi Kaulquappe Thank you for answer... Reffer to Manual of HMI, Monitouch HMI supports 3964&RK512. But I didnt test RK512... I will test RK512 and will write the result here Thanks again Attachment Capture.PNG (111 Downloads)

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4/8/2019 12:55 AM	Rate (0)
aHmp Regular Member Joined: 3/12/2019 Last visit: 3/12/2025 Posts: 4 Rating: (0)	Hi OlafS1 Thank you for the note Connection is RS232 like attachment. at PLC side I have DB9-F and HMI side, DB25-M. Thanks for help OlafS1 Attachment Capture.PNG (121 Downloads)
	Last edited by: aHmp at: 4/8/2019 12:56:14 AM
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4/8/2019 9:29 AM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello, I think that you got error 0703, I can't see the HEX code in your first post.. When you mix up 3964R and RK512 you won't get error 0703. It would be a different one. Error 0703 shows that the communciation partner is parameterized for a different protocol or some general things are wrong. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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