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How many maximum modbus slave devices can be connected to a single RS485 port or TCP/IP of Modbus Master?

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We are trying to develop a Modbus Slave Simulator which communicates to Modbus Master over RTU/ TCP/IP.
Modbus Slave Simulator application will be running on a PC and communicates to the Modbus Master over RTU/TCP/IP.

My question is how many max slaves can I simulate in a PC? As PC will be having single RTU and single ethernet port. How many max Slaves can I simulate over RTU and How many max Slaves can be simulated over ethernet port?

If I have to simulate max 255 slave devices, do I need any additional hardware to be considered. What additional hardware I need if I need have to simulate over RTU and TCP/IP?
I am trying to develop this Modbus slave simulator app in LabVIEW. As I am new to Modbus protocol, I do not have much information, hence posting this question.

Thanks in advance.
Giridhar
asked Nov 2 in Modbus and Industrial Automation by giridhar1985 New to the Community (0 points)

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