Overview

The optional CBP2 (Communication Board PROFIBUS) is used to link drives to higher-level automation systems via PROFIBUS-DP.

The CBP2 is mounted in the ADB adapter board for installation in the converter. An LBA bus adapter is needed for this purpose.

The optional board features three LEDs (green, yellow, red) for displaying the current operational status.

The board is supplied with power via the basic unit.

Baudrates of 9.6 Kbits/s to

12 Mbits/s are possible.

Data exchange via PROFIBUS-DP

The bus system allows data to be exchanged very rapidly between the drives and higher-level systems (e. g. SIMATIC). The drives are accessed in the bus system according to the master/slave principle. The drives are always slaves. Each slave is uniquely identified by a slave address.

PROFIBUS-DP message frame

Data are exchanged in message frames. Each message frame contains useful data which are divided into two groups:

1.  Parameters (parameter ID value, PKW)

2. Process data (PZD)

The PKW area contains all transfer data which are needed to read or write parameter values or read parameter properties.

The PZD area contains all the information needed to control a variable-speed drive. Control information (control words) and setpoints are passed to the slaves by the PROFIBUS-DP master. Information about the status of slaves (status words) as well as actual values are transferred in the opposite direction.

The length of the PKW and PZD components in the message frame as well as the baudrate, are determined by the master. Only the bus address and, if necessary, the message frame failure time are set on the slaves.

Connections

The optional CBP2 board features a 9-pin Sub D connector (X448) for connection to the PROFIBUS-DP system. The connections are short-circuit proof and floating.

Pin assignments on X488 connector