SIPLUS S7-400 SM 421 digital input modules Siemens

Область применения

Digital input modules can be used to connect the control to digital process signals. They are suitable for connecting standard switches and two-wire proximity switches (BERO).

Обзор

• Digital inputs for SIMATIC S7-400
• For connection of switches and 2-wire proximity switches (BEROs)

Note:

SIPLUS extreme products are based on SIMATIC standard products. The contents listed here were taken from the respective standard products. SIPLUS extreme specific information was added.

Technical documentation on SIPLUS can be found here:
http://www.siemens.de/siplus-extreme

Дизайн

The digital input modules have the following mechanical features:

• Compact configuration:
  The rugged plastic housing contains:
  • Green LEDs to indicate signal states at the inputs
  • One red LED each to indicate internal and external faults or errors in modules with diagnostic and process interrupts
  • Labeling strips
• Simple assembly
• User-friendly wiring:
  The modules are wired by means of a plug-in front connector.

Функции

Digital input modules convert the levels of the external digital signals from the process into the internal signal level of the S7-400.

Технические данные