Digital modules

Digital input/output modules connect the binary process signals to the S7-400. Digital sensors and actuators can be connected to the SIMATIC S7-400 via these modules.

Use of the digital input modules offers the following advantages for users:

• Optimum adaptation:
  Using any desired arrangement of modules, the number of inputs/outputs can be matched to the task to be performed. Superfluous investments no longer exist.
• Flexible process connection:
  Digital actuators and sensors of various types are available for connecting the S7-400 to the process.

• Digital I/Os for the SIMATIC S7-400
• For flexible adaptation of PLC to respective task
• For connecting of digital sensors and actuators

Digital output modules are characterized by the following features:

Compact configuration

The rugged plastic housing contains:

• Green LEDs for indicating the signal statuses at the outputs
• One red LED each for indicating internal/external faults, in the case of modules with diagnostics capability and for displaying faults (e.g., blown fuses, no load voltage).
• Labeling strip for insertion in the front connector (supplied; also as a copy template in the manual); cover films can be ordered separately.

Simple assembly

The modules are mounted in the rack and screwed tight.

User-friendly wiring

The modules are wired by means of a plug-in front connector. When the connector is plugged in for the first time, a coding element engages so that the connector can only be plugged into modules with the same voltage range.

When the module is replaced, the front connector can be used in its fully wired state for the new module of the same type.

Brochures

Information material for downloading can be found in the Internet:

http://www.automation.siemens.com/infocenter