Fully modular connection is the fastest and most secure system cabling method. Sensors and actuators from the I/O are connected to the SIMATIC TOP connect terminal modules, and are easy to connect fault-free with the SIMATIC S7 via the connecting cable and front connector module. The connecting cables are available pre-assembled, and sold by the meter for length-optimized self-assembly.

The terminal modules are not just the electrical interface between the control cabinet and the machine: In the case of the signal modules, LEDs indicate the switching status of digital signals and the presence of the 24 V DC voltage. The function modules enable adaptation to other voltage potentials required in the I/O.

Flexible connection is the optimal choice for simple wiring within the control cabinet. Up to 32 digital input and output channels are connected directly with the sensors and actuators in the control cabinet. The digital I/O modules of the SIMATIC S7 (24 V DC) can be wired in this way.

The standard front connector of the SIMATIC S7 is used. This is assembled with single cores with a cross-section of 0.5 mm² and cut off straight at the other end. The cores can be easily assigned since they are coded in accordance with the pin designations on the front connector. This means the cores can be easily allocated to each element in the control cabinet.