If you have acquired a GDP E239 Grace Link unit, follow these steps to avoid immediate failure:
In a water treatment facility, two SCADA servers run in hot-standby mode. The GDP E239 Grace Link sits between the field RTUs and both servers. When the primary server fails, the Grace Link continues sending identical data copies to the standby server, which instantly becomes active. Operators see no data gap. gdp e239 grace link
A manufacturing plant with 20-year-old PLCs (using GDP native protocol) wants to add modern IoT sensors (Modbus TCP). The GDP E239 Grace Link translates between the two protocols while maintaining the original deterministic timing required by the old PLCs. If you have acquired a GDP E239 Grace
As industries migrate to Industry 4.0, the GDP E239 Grace Link has found a new lease on life. Instead of replacing entire GDP-based control systems, engineers now deploy the E239 as an edge aggregator. The unit’s Ethernet port can be configured to push JSON payloads over MQTT to a cloud platform (e.g., AWS IoT Core or Azure IoT Hub), while simultaneously maintaining the legacy GDP bus for real-time control. Operators see no data gap
This hybrid approach gives plant managers the best of both worlds: deterministic control on the factory floor and cloud analytics at the enterprise level. To enable MQTT: