Chapter 4 Deployment of the CPU 21x-2BT10 with TCP/IP Manual VIPA CPU 21x
4-46 HB103E - Rev. 05/45
Station 1
System 200V
CPU 21xNET
Station 2
System 200V
CPU 21xNET
Ethernet
NetPro
The example for the application is based upon a communication task that is
described in detail in the following passage:
Both of the CPUs contain the same PLC program, only the configuration of
the CPs have to be adjusted.
Both stations are sending and receiving 16 data words per second.
• Data block DB11 transfers the data bytes DBB 0 to DBB 32 at an
interval of 1s. Data byte DBB 0 in DB 11 is used as message counter. It
is only incremented if the preceding transmit command was processed
correctly (completed without error). The remaining data words (DBB 2 to
DBB 32) can be used for the transfer of user data.
• The receiving station stores the data in DB12 (DBB 0 to DBB 31).
• Using NetPro an active SEND/RECEIVE connection with ID 1 is to be
configured for the CP. This Connection is established at station 2 as a
passive SEND/RECEIVE connection.
• The source and destination parameters must be configured directly.
At this point the purpose and the required settings have been outlined. The
programs provide additional details of the configuration of the handler
blocks. A detailed description follows.
Structure
Station tasks
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