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I need to connect more than one Modbus master devices to the same Modbus slave device.

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The Modbus master devices are connected to the 3 Modbus slave ports of the ProLinx module. The Modbus slave device is connected to the Modbus master port of the ProLinx module. You can increase the number of master devices connected to the same slave device using the cascade architecture. ProLinx module 4102-MBS3-MBM. Using the ProLinx module 4102-MBS3-MBM lets you to connect up to 3 Modbus master devices to the same Modbus slave device.