For DP Request, the measurement values (Request Handshake) are not requested via the PROFIBUS, but via a separate connection.

Depending on the hardware and software, different access points can be selected for the Request:

  • TCP/IP: The connection to the SIMATIC S7 is established using an integrated PN interface of the S7-CPU or the respective CP modules in the PLC and the standard network interface of the computer. No additional Siemens software is required for the connection.

  • PC/CP: This is the designation for different SIMATIC specific access points. In contrast to the TCP/IP connection, for the PC/CP group the SIMATIC communication software (and the corresponding licenses) must be installed on the computer with the corresponding functions enabled.

    • MPI, PROFIBUS: The connection to the SIMATIC S7 is established using the MPI or PROFIBUS interface of the computer; e.g. with the CP5611 PCI card or the MPI adapter for USB interface or serial PC interface.

    • TCP/IP, ISO: Here, either the standard network interface of the computer or a suitable interface card is used for the connection to the S7.

System integration with ibaBM-DPM-S

The measured data is transmitted to the ibaBM-DPM-S device over PROFIBUS DP.

You need the following connections:

  • Online connection between ibaPDA and S7-CPU (TCP/IP, MPI or DP)

  • Online connection between ibaPDA and ibaBM-DPM-S (TCP/IP over Ethernet or USB)

  • Fiber optic connection between ibaPDA/ibaFOB-io-D and ibaBM-DPM-S

  • PROFIBUS connection between ibaBM-DPM-S and S7 PROFIBUS master

In the standard version, you can configure a maximum of 8 connections per device, i.e. 8 PROFIBUS slaves. Up to 244 Byte data can be transmitted per slave.

The following illustration shows the configuration using a TCP/IP online connection between ibaPDA and S7-CPU.

For information about application examples, see chapter Application examples.