Modbus Tcp Network


kanber

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Posted

Hello,

 

I have a project which I am using daqfactory on 10 PC's. 

 

I need to control of these PC's over MODBUS TCP with another software.

 

I will need to read and write the all channels of daqfactory.

 

For that I tried to setup daqfactory Modbus TCP Slave. But I can only read value from dqfactory. How can I setup also for write channel from Master PC.

 

 

Posted

Modbus slave only supports function 16 for setting values.  The tag number must be between 1 and 4999 for signed integer, and 10000 and 14999 for floating.  Even though the signed integer form could use function 6, the slave protocol only supports function 16.

Posted

Hi,

I tried withyour modbus advanced scanner sample program. I attached master and slave channels on attached pictures.

 

I have some problem;

 

1- When I was open modbus slave on program six variable show X on the tags. It is not updating. When I update all channels on master it is showing value. but I need when the program is open all value must be show on slave program.(modbus slave first opening.bmp)

 

2- I am getting socket error every ten seconds.

 

 

 

 

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