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Third party software and hardware support forums. => Modbus => Topic started by: abmuki on February 17, 2012, 12:10:47 AM

Title: Multiple TCp modbus devices
Post by: abmuki on February 17, 2012, 12:10:47 AM

Hi,
Does any one know, if it's possible to connect multiple devices thru Modbus TCP?
I've read that it's no problem with a serial connection. Just wondered how to do it with ethernet.
I've connected one IO device that's using masteraddress 192.168.2.2
mach3 uses 192.168.2.1 Now I would like to add another IO slave device to 192.168.2.3
Just have problems with communicating with mach3.
any suggestions would ne appreciated.

Regards,
Albert

Title: Re: Multiple TCp modbus devices
Post by: Peter Homann on February 17, 2012, 04:21:58 PM

Hi,

No it is not possible to address to more than 1 TCP modbus device through Mach3.

Sorry,

Peter

Title: Re: Multiple TCp modbus devices
Post by: poppabear on February 17, 2012, 08:17:29 PM

There is an "expensive" work around, I run TCP Modbus to a PLC, then in that PLC I Have another ECOM module, that it then talks to multiple TCP connected modbus PLC's. Again, a very expensive solution, only worth it if you got a large machine that has distributed I/O clusters here and there.

Scott

Title: Re: Multiple TCp modbus devices
Post by: abmuki on February 20, 2012, 07:51:38 PM

OK, thx for replies,
I will try to use the serial port for the third device.

Albert

Title: Re: Multiple TCp modbus devices
Post by: ulihuber on October 03, 2017, 12:19:50 PM

This is an old thread, but finally there is a solution: http://www.machsupport.com/forum/index.php/topic,35651.0.html
 ;D

Uli