Chapter 4 Deployment of the CPU 821xNET
CPU ADAM 821x
4-18
ADAM 8000 Manual CPU 821x – Rev 1.1
The introductory example is the application of a communication task,
described below:
Station 2
System 82xx
Station 1
System 82xx
CPU 821x NET
Twisted Pair
Hub
CPU 821x NET
Both of the CPUs run with 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 words DW0 to DW15 at an interval
of 1s. Data word DW0 in DB11 is used as message counter. It is only
incremented, if the preceding send command was processed correctly
(completed without error). The remaining data words (DW1 to DW15)
may be used for the transfer of user data.
•
The receiving station stores the data in DB12 (DW 1 to DW 15).
•
SEND is configured with job number A-No. = 11 and with a page frame
offset SSNR = 0.
•
RECEIVE is configured with job number A-No. = 1 and a page frame off-
set SSNR = 0.
•
The source and destination parameters have to 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 of a suitable configuration of the CPs under
control of H1 or TCP/IP is also included.
Task
Structure
Purpose of the
PLCs
