Appendix
A.1 STEP 7 program examples
A.1.3
STEP 7 program example for acyclic communication
258
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 infor-
mation can be found under
http://support.automation.siemens.com/WW/view
/de/15364459
(http://support.automation.siemens.com/WW/vie
w/en/15364459).
Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257324B AF
SIMATIC ET 200pro FC-2 converter