Hello,

jabbi_king

Dear its mean on the other side it used EM277. same like CP341?

EM277 order no. 6ES7277-0AA22-0XA0 

 again pls, check my links and compare 2 modules parameters to be sure about functionality:

CP341 S7-300 RS422/485 serial module Info

EM277 S7-200 Profibus DP Slave module

These 2 modules have only physical interface same, other parameters and product functionality points to different tasks.

Hello,

I expect due my recommendations you'll check and understand what is your situation and what you need pay attention for. Now I see that if I write any message you want still go via your own way. No problem, as you wish but I really now close support to this Topic, very sry. It looks like you really don't read and think about any sugestions given here from us.

Update: if you will not have good other sugestions pls call support or send support request.