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Kepware Knowledge Base: Solution

Unable to Connect to a ThermoWestronics Ethernet Device

Last Update: 11/7/2018

ThermoWestronics Ethernet devices use the Modbus TCP protocol to communicate. This requires a fifth octet to be set that matches the device's Modbus ID. For example, to communicate with a device with an IP address of and a Modbus Device ID of 1, the Device ID set in KEPServerEX should be

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Modbus Suite