Each ModbusSlaveNetwork requires a serial port on the host JACE platform. The JACE connects on the Modbus RTU or ASCII network and functions as another Modbus slave (server). If needed, you can make it appear as multiple Modbus devices, by adding multiple ModbusSlaveDevices under the ModbusSlaveNetwork, and assigning each one a unique Modbus address (1—247) for that network.

The station acts as a Modbus slave (server) to queries received from a serially-connected Modbus master device. In each uniquely-addressed ModbusSlaveDevice, you specify the ranges for available Modbus data items (coils, inputs, input registers, holding registers). In some cases, only a single child ModbusSlaveDevice may exist to represent the station.

Modbus Slave Network configuration is straightforward, using the property sheet of the network object.