Siemens SINAMICS G120 - STEP 7 Program Example for Acyclic Communication

Appendix
A.7 Application examples
Inverter with CU230P-2 Control Units
440 Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
HEX
BIN
Bit in
STW1
Significance
Bit in
MW1
Bit in
MB1
Bit in
MB2
Inputs
1
10
PLC control
2
2
0
11
Setpoint inversion
3
3
0
0
12
Irrelevant
4
4
0
13
Motorized potentiometer ↑
5
5
0
14
Motorized potentiometer ↓
6
6
0
15
Data set changeover
7
7
A.7.3.3
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
The number of simultaneous requests for acyclic
communication is limited. More detailed
information can be found under
http://support.automation.siemens.com/WW/view
/de/15364459
(
http://support.automation.siemens.com/WW/vie
w/en/15364459
).