Appendix
A.1 Application Examples
Inverter with CU240B-2 and CU240E-2 Control Units
286 Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB
A.1.2.2 STEP 7 program example for acyclic communication
M9.0 Starts reading parameters
M9.1 Starts writing parameters
M9.2 displays the read process
M9.3 displays the write process
&\FOLFFRQWUROSURJUDP
1HWZRUN 5HDGLQJDQGZULWLQJSDUDPHWHUV
UHDGSDUDPHWHUV
ZULWHSDUDPHWHUV
2%
2
2
80
81 0
2
80
81 0
50
63% 5'
80
81 0
2
80
81 0
1235'
:5
&$//
%($
63%
%($
123
)&
&$// )&
50
:5
The number of simultaneous requests for acyclic
communication is limited. More detailed
information can be found in the Data set
communication
(http://support.automation.siemens.com/WW/vie
w/en/15364459).
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