ABB S800 I/O Manual page 107

Appendix A Specifications
The Module Termination unit is DIN-rail mounted and grounded to the DIN-rail.
The Module Termination Unit TU847 carries screw terminals for power supply and
redundant power supply monitoring, two D-way terminals for PROFIBUS, two
connectors for the service ports, one connector for the Optical ModuleBus Port
TB842, mounted on TB806, and one electrical ModuleBus.
The Module Termination Unit TU846 carries screw terminals for power supply and
redundant power supply monitoring, two D-way terminals for PROFIBUS, two
connectors for the service ports, two connectors for the Optical ModuleBus Port
TB842, mounted on TB846, and two electrical ModuleBuses.
3BSE020926-600
Description
107