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Appendix
A.1 Application examples
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
330
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
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
8
0
81
0
2
8
0
81
0
5
0
63% 5'
8
0
81
0
2
8
0
81
0
123
5'
:5
&$//
%($
63%
%($
123
)&
&$// )&
5
0
:5
The number of simultaneous requests for acyclic
communication is limited. More detailed
information can be found in the
http://support.automation.siemens.com/WW/view
/de/15364459
(
Содержание SINAMICS G120 CU230P-2
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