pyModbusTCP PC to PC connection

Question

I'm trying to connect two pcs together using pyModbusTCP. When I run both the client and server locally using local host it works just fine.

When I try and run them on separate PC's the client takes a while to "connect" and then just reads the registers as "None". I have set a static IP address for the server as 192.254.100.101 and can ping it using terminal on the other PC. I also have a static IP address on the client side of 192.254.100.102.

Client Code:

    from pyModbusTCP.client import ModbusClient
    import time
    
    client = ModbusClient(host="192.254.100.101", port=502, debug = True)
    
    print("Opening client")
    client.open()
    print("Client open")
    try:
    
        while True:
    
            value = client.read_holding_registers(0)
            print(f"Register 0: {value}")
    
            time.sleep(1)
    
    
    except:
    
        print("Shutdown")

Server code:

    from pyModbusTCP.server import ModbusServer, DataBank
    import time
    
    server =  ModbusServer(host= "192.254.100.101", port = 502, no_block=True)
    server.start()
    try: 
        print("Starting server...")
        server.start()
        print("Server is online")
        val = [0]
        while True:
            val0 = input("Val: ")
            val = [int(val0)]
            print(val)
            DataBank.set_words(0, val)
            time.sleep(0.5)
    
    except:
        print("Shutdown server")
        server.stop()