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Author Topic: please help for modbus in macro  (Read 7398 times)

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Offline mjzrpr

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please help for modbus in macro
« on: March 10, 2025, 03:55:23 PM »
hi
how to use write button in macro?
i can send hex value with this screen. but i can not send value in macro. please help me. :( :( :( :( :( :( :(

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Offline mjzrpr

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Re: please help for modbus in macro
« Reply #1 on: March 10, 2025, 04:00:09 PM »
also by modbus poll software its works fine.
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Offline Peter Homann

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    • Homann Designs
Re: please help for modbus in macro
« Reply #2 on: March 10, 2025, 06:07:29 PM »
Hi,

Have a look at this article I wrote.
https://www.homanndesigns.com/pdfs/Using_Modbus_with_Mach3.pdf

Cheers

Peter.
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Homann Designs
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Offline mjzrpr

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Re: please help for modbus in macro
« Reply #3 on: March 11, 2025, 02:35:17 AM »
hello peter
I hope you well.
thanks for help.
I do your guidance pdf.
when test window is same attached picture the write button work fine. but its dont work.
the io bord have 8 out put. get a integer value from 1 to 256. value 4 means 3th output. value 5 means output1+output3.
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Offline mjzrpr

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Re: please help for modbus in macro
« Reply #4 on: March 11, 2025, 02:37:16 AM »
dear mr peter
why we can not use a simple code in macro such as: sendmodbus(coil,adress, . ., value)
whit out brain.
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Offline mjzrpr

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Re: please help for modbus in macro
« Reply #5 on: March 11, 2025, 02:50:51 AM »
I want just send integer value 0 to 255 can you tell me whats is correct  for this picture (modbus configuration window)?
the io bord work fine with test window (modbus serial control manitor window)
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Offline mjzrpr

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Re: please help for modbus in macro
« Reply #6 on: March 11, 2025, 02:53:51 AM »
I want use this io bord
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Offline mjzrpr

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Re: please help for modbus in macro
« Reply #7 on: March 11, 2025, 03:13:30 AM »
when I use sendserial("test") in macro. mach3 can send data to serial port. but it can just send string not hex.
if I can send hex (01 06 00 01 00 04 D9 C9) its means value 4 in modbus and the output 3 is actived.
can you help me to send hex to serial port?
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Offline Graham Waterworth

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  • Yorkshire Dales, England
Re: please help for modbus in macro
« Reply #8 on: March 12, 2025, 12:56:00 PM »
Have you tried it this way :-

sendserial("test" & Chr(D9))

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Offline mjzrpr

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Re: please help for modbus in macro
« Reply #9 on: March 13, 2025, 07:53:21 AM »
dear Graham Waterworth

thanks for comment. chr(D9) do not add any think to serial port .
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