Dear sir, 

I am new to Siemens. I need to download program in op77a HMI. I was tried with mpi cable. but it's not working. pls share pin configuration for rs485 pin. its urgent. pls support 

thanks and regards 

Muthu 

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AutoGen_687624

Dear sir, 

I am new to Siemens. I need to download program in op77a HMI. I was tried with mpi cable. but it's not working. pls share pin configuration for rs485 pin. its urgent. pls support 

thanks and regards 

Muthu 

 Hello,

 please have a look:

https://support.industry.siemens.com/tf/ww/en/post/554388/