CommandHMI with Siemens S7-1200
TIA Portal
Some versions of the S7-1200 firmware have a security setting to allow or disallow put-get communications. Put-get communications must be allowed.
Port 102 must be used
There are two methods of accessing data: “symbolic” and “absolute”.
In the case of a link with S7-1200 data blocks: the data blocks do not have to be defined on an optimised data structure. Access to M-bits (structured in bits/word/word size) will not be a problem.
HMI-Tool
Port 102 must be used
Bit Switch M0.0
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Bit Switch M0.1
Bit Lamp Q0.0