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Help with RS-232 ASCII Communication - SoMachine

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Anonymous user
Not applicable

Posted: ‎2020-06-24 08:55 PM

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Posted: ‎2020-06-24 08:55 PM

Help with RS-232 ASCII Communication - SoMachine

Hi, 

 

I'm currently trying to set-up a M241 PLC to communicate with a Rigol Multimeter via RS-232 using the ASCII manager. 

 

I have had success sending commands to the multimeter (and hyperterminal on a PC) from the PLC using the example below from the 

SoMachine Modbus and ASCII Read/Write Functions PLCCommunication Library Guide 

 

I have taken this example and modified it in order to try and receive a basic message, initially from hyperterminal, See 'Current receive example' below, however I am yet to get this working. 

 

Can anyone share an example of code used to receive a message using this SEND_RECV_MSG function block? Or provide a hint as to where I am going wrong? 

 

Send Example:

Untitled.png 

Current Receive Example:

2.png 

The PLC is connected to my computer using a RJ45 to serial cable and a serial to usb converter.

I believe I have the ascii manager and cable set-up correctly as I am able to send messages from the PLC to hyperterminal.

 

Thanks in advance, 

Kiwi_Karl

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ismailozinan
Lt. Commander ismailozinan Lt. Commander
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Posted: ‎2020-06-25 04:05 AM

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Posted: ‎2020-06-25 04:05 AM

Hello,

 

You can use programme that at linked.And also You can find video at attached for explaining programme.But video is turkish language.

Best Regards,

 

Link:  RS232 ascii communication with TM241 

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Anonymous user
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Posted: ‎2020-06-29 02:14 PM

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Posted: ‎2020-06-29 02:14 PM

Hi ismailozinan, 

 

Thank you for the program. It was very helpful, I've got it working now!

 

Regards

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Theo.DUTERTRE
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Posted: ‎2023-10-12 01:34 AM

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Posted: ‎2023-10-12 01:34 AM

Good morning,

I have exactly the same problem but the file is no longer available ? Could you put it back online? Or put a screenshot? Or the link for the video ? thanks in advance

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ismailozinan
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Posted: ‎2024-08-08 06:04 AM

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Posted: ‎2024-08-08 06:04 AM

Second link is Ascii Communicate 

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ravi_kaneria
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Posted: ‎2024-08-09 10:03 AM

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Posted: ‎2024-08-09 10:03 AM

Hi All i am also try to get it done will update you after taking trial. 
here i have one customer software which will send me the query like below
RON 2,5,7 = means Realay on of output Q2, Q5, and Q7 
and 
when it is on from PLC then i need to send the feedback or status to that software like 
Status 2,5,7 = si it will understand the output is on.

also there are many more CMDs to PLC and Status to Software.
I wiling to do much more also hopping your file will help us as I read above comments. 

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