Siemens ET 200B

The ET 200B (B stands for "block I/O") belongs to the ET 200 distributed I/O system with the PROFIBUS-DP field bus. ET 200B is a DP slave having IP 20 protection. The ET 200B distributed I/O station incorporates an integral port for connection to the PROFIBUS-DP bus and digital or analog inputs/outputs.

The ET-200B consists of 2 parts: the terminal block and the electronics block. The terminal block incorporates the permanent wiring and does not contain any function-related electrical components. The electronics block is attached to the terminal block. The electronics block contains the logic circuits. The terminal block and the electronics block have matching mechanical coding elements to prevent destruction of the electronics block.