Siemens 6ES7158-0AD01-0XA0 PROFIBUS DP Coupler

Siemens 6ES7158-0AD01-0XA0 is a DP/DP coupler that links two PROFIBUS DP networks to transfer data between masters on each network, enabling cross-network communication for distributed I/O configurations in SIMATIC systems. As part of the SIMATIC DP family, this coupling module bridges PROFIBUS DP segments to support multi-network automation architectures. The order number 6ES7158-0AD01-0XA0 appears on Siemens Industry Mall with the note that it is a DP/DP coupler featuring redundant current infeed, and that a product phase-out is planned. Electrical specifications call for a 24 V DC supply (acceptable range 20.4–28.8 V), typical current consumption of 90 mA, and roughly 2 W of power loss, with an IP20 protection rating. In practice, data written to or read from a master on one PROFIBUS DP network can be accessed by the master on the other network, making it suitable for bridging DP networks in distributed I/O layouts or multi-controller setups in industrial environments.