Siemens 6ES5731-1BF00 S5 Standard Interface Cable

Siemens 6ES5731-1BF00 is a five-meter standard interface cable that links a PG-MUX programming device to a SIMATIC S5 PLC in the S5-135/155 family. This plug-in, point-to-point cable carries the serial communication path used for programming and parameter exchange with older S5 controllers, enabling direct PC or PG-to-S5 communication without intermediate adapters. The 6ES5731-1BF00 is commonly deployed to connect the PG port on S5 CPUs such as the S5-135U and S5-155U, providing a dedicated interconnect that preserves the S5 PG interface integrity. Designed for industrial use, it minimizes the need for additional sockets or converters in typical lab bench or panel installations. With a 5 m length, it offers flexibility to position a programming workstation while keeping a clean, single-cable path between devices. This cable is part of Siemens’ S5 communication accessory lineup and is intended for retrofitting or servicing existing S5 installations that rely on the standard PG-MUX to S5 connection.