What is the Siemens 6GK1500-0FC10?

The 6GK1500-0FC10 is a PROFIBUS FastConnect RS 485 bus connector with a 180° axial cable outlet. It connects PROFIBUS nodes — PLCs, distributed I/O stations, and network components — to the PROFIBUS bus cable using tool-free insulation displacement terminals.

What does FastConnect mean?

FastConnect (FC) is the Siemens tool-free installation system for PROFIBUS cabling. The insulation displacement terminals pierce the 2-core PB FC installation cable when the connector housing is closed — no wire stripping or screwdriver needed. The 180° outlet routes the cable straight back from the connector, ideal when the node is at the end of a cable run.

When do I use the terminating resistor?

The integrated resistor combination is activated via a slide switch on the connector. When engaged, it terminates the bus segment and simultaneously isolates the outgoing segment — essential for the first and last nodes on a PROFIBUS segment. Leave it off for all intermediate nodes.

Which devices is it compatible with?

Compatible with all PROFIBUS nodes using a 9-pin D-Sub interface: SIMATIC S7-200/300/400/1200 PLCs, ET 200M/B/L/S distributed I/O, CP 342-5/343-5/443-5 communication processors, OLM optical link modules, RS 485 repeaters, and SIMATIC programming devices.