The CP 343‑2P / CP 343‑2 is the AS‑Interface master connection for the SIMATIC S7‑300 and the ET 200M.

Through connection to AS‑Interface it is possible to access max. 248 DI / 248 DQ per CP, using 62 A/B slaves with 4 DI / 4 DQ each.

With the integrated analog value processing, it is easy to transmit analog signals (per CP up to 62 A/B analog slaves with a maximum of 2 channels each or up to 31 standard analog slaves with a maximum of 4 channels each).

The CP 343‑2P is the further development of the CP 343‑2 and contains its entire functionality. An existing STEP 7 user program for a CP 343‑2 can thus be used without restrictions with a CP 343‑2P. It is only in STEP 7 HW-Config that the two modules are configured differently, with the CP 343‑2P offering additional options. This is why the CP 343‑2P is recommended.