Where it fits: PROFIBUS DP to PA link
The 6ES7157-0AC81-0XA0: This SIMATIC DP DP/PA coupler bridges a PROFIBUS DP master to fieldbus segments conforming to IEC 61158-2 — PROFIBUS PA. It supplies 400 mA to the segment while isolating the DP side. Rated for the expanded temperature range and IP20 protection, it fits standard control cabinet environments. The non-EX version is intended for non-hazardous areas.