For connection to the SIMATIC S7-400 I/O modules, the front connector element is plugged into the I/O module instead of the SIMATIC S7-400 front connector. The front connector element features four connecting cables which are already assembled on the plug. For 32-channel I/O modules (24 V DC), a special version front connector element (digital 4 x 1 byte) is used. For analog I/O modules, the front connector element with its four connecting cables is used.

Use in the case of SIMATIC S7-400 components

• The front connector modules replace the SIMATIC S7-400 standard connectors: 6ES7492-1AL00-0AA0, 6ES7492-1BL00-0AA0 or 6ES7492-1CL00-0AA0