Communication drivers are designed for data transmission from hardware devices to the runtime software and command transmission from the runtime software to the devices in accordance with the device communication protocol. These drivers require a license. The price of the license differs based on the type of device for which the driver is designed. In addition, Reliance can communicate to any device for which an OPC or DDE server is available (Reliance is an OPC and DDE client).
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Devices or models supported by communication drivers in the Reliance 4 SCADA/HMI system can be found in this table.