The SST-PB3-CPX module is a master/slave module for the PROFIBUS system. It is a chassis module which is compatible with the Allen-Bradley Logix modules series. It weighs 270 grams. It has the ability to connect with the Allen-Bradley/Rockwell Automation CompactLogix L2, L3, and L4 controllers. This module is a low-cost solution for modern industrial automation applications. The module can be easily used with a DO-V1 network. This also module enables high performance and it adds efficiency to the whole system. The SST-PB3-CPX module can be programmed as a PROFIBUS master unit, slave unit, or a master/slave unit. It is manufactured with a flexible design and it helps to reduce inventory. The chassis module uses a 10/100 Mb Ethernet port for internal communication. This Ethernet port allows for faster downloads and remote connection monitoring. It also provides a backplane or front module for various configuration options. The SST-PB3-CPX module can support 1984 input bytes and 1968 output bytes per master module. This module is mostly suitable for large PROFIBUS networks and its main application is in marine, packaging, and automotive applications.

The SST-PB3-CPX module has support for external storage devices. It supports a MicroSD card slot and it includes an 8 GB MicroSD Card bundled with the package. The mean time between failures (MTBF) of the module is 181 years when the module runs at a temperature of 25 degrees Celsius. The maximum distance rating of the module is 4 slots. It supports a maximum of 125 slave units. The SST-PB3-CPX module has stable performance and it has a reliable network. It is immune to electrical noise. Electrical noise is known to degrade the performance of the chassis module. The running temperature of the module lies between 0 and 60 degrees Celsius and the module can be stored between -40 and 85 degrees Celsius.