Several different versions of the bus connector are available, each optimized for the devices to be connected:

• Bus connector with axial cable outlet (180°), e.g. for PCs and SIMATIC HMI OPs, for transmission rates up to 12 Mbps with integrated bus terminating resistor.
• Bus connector with vertical cable outlet (90°);

This connector permits a vertical cable outlet (with or without PG interface) for transmission rates of up to 12 Mbps with integral bus terminating resistor. At a transmission rate of 3, 6 or 12 Mbps, the SIMATIC S5/S7 plug-in cable is required for the connection between bus connector with PG-interface and programming device.

• Bus connector with 30° cable outlet (low-cost version) without PG interface for transmission rates of up to 1.5 Mbps and without integrated bus terminating resistor.
• PROFIBUS FastConnect bus connector RS 485 (90° or 180° cable outlet) with transmission rates up to 12 Mbps for fast and easy assembly using insulation displacement connection technology (for rigid and flexible wires).