CP 440 Siemens

Область применения

The CP 440 communications processor is used for high-performance transmission of short message frames via RS 422/RS 485 (X27). This is the preferred method for implementing point-to-point connections.

Point-to-point connection is possible, for instance, for:

• SIMATIC S7, SIMATIC S5 programmable logic controllers and third-party controllers
• Programming devices and PCs
• Robot controls
• Scanners, barcode readers
• Measuring systems
• Scales

The RS 485 interface supports links to up to 32 partners.

Обзор

• For high-performance transmission of messages via point-to-point connections (high message rate)
• Physical interface: RS 422/RS 485 (X.27)
• Up to 32 nodes
• Protocol implemented: ASCII, 3964 (R)
• Simple parameterization via a parameterization tool integrated into STEP 7

Дизайн

The communications processors have the following mechanical features:

• Rugged plastic housing
• LEDs:
  For "Send", "Receive” and ”Error”.

The CP 440 can also be used in expansion racks. However, transmission of the C bus signals must be ensured. A table with possible applications can be found under "Technical specifications".

Функции

A number of standard protocols are implemented and allow data exchange with a wide variety of nodes:

• ASCII:
  For connection to third-party systems with simple communication protocols, such as protocols with start and end characters or protocols with block-check characters. The interface''s handshake signals can be scanned and controlled via the user program.
• 3964 (R):
  For connection to Siemens devices or third-party devices by means of the standardized and published Siemens 3964 (R) protocol. Also implemented are a 3964(R) driver with default values and a programmable 3964(R) driver.

Parameterization

Parameterization of the CP 440 communications processor is particularly convenient and simple:

• The user specifies module characteristics via a parameter assignment tool integrated in STEP 7, such as:
  • Which implemented protocol driver is to be used, or
  • Which driver-specific features are to be utilized
• Parameterization via CPU:
  Simply connect the programming device to the CPU. The configuration data is filed in a system data block that is saved in the CPU. When a module is replaced, the new module is thus immediately ready for operation.
• Configuring package (on CD-ROM):
  With electronic manual, parameterization screen forms and standard function block for communication with the CP

Технические данные