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TCP Modbus remote slave ID


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When using the Ethernet protocol Modbus TCP, slave ID's are not used.  This is why they are automatically assigned to 255 and grayed out.  They are only for the serial protocol Modbus RTU.  


If your slave device requires a slave ID when connecting over Modbus TCP, it must have an internal Modbus TCP to Modbus RTU converter.  


Therefore, you would need to use the "Modbus Advanced" features of UniLogic to assign the correct slave ID.  Please email into support@unitronics.com for more information on how to use this feature, and we can also provide sample code with this feature for your to review.


Hope this helps.

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