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Dear
wincc flexible from Siemens is the software used to program sienens HMI panels and TP177 is one of them
Regards
Hi,
TIA portal or Win cc Flexible you can use for configuring & HMI page development,no any freewares are available for configuring & HMI page development, of TP177B or Siemens make HMI's.
Regards
Nivash