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PST/PSTB Softstarter Modbus Communication Manual

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This document describes the Modbus fieldbus communication protocol for ABB PST and PSTB softstarters, detailing how to configure parameters for fieldbus control and providing a complete binary input telegram mapping from the softstarter to a PLC. It covers status information, protection events, warnings, faults, and control signals necessary for integrating the softstarter into a Modbus network.

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