The CP 343-1 has all the advantages of the SIMATIC S7-300 design:

• Compact design;
  on the front, the rugged plastic housing features:
  • Two RJ45 sockets for connection to Industrial Ethernet with automatic sensing of the data transmission rate by means of Autosensing/Autonegotiation;
    the RJ45 sockets are industrially compatible and designed with additional holding collars for connecting to the IE FC RJ45 Plug 145/180
  • 2-pole plug-in terminal strip for connection of the 24 V DC external supply voltage
  • 8 LEDs for indication of the operating and communication status (diagnostics for each switch port)
• Easy installation;
  the CP 343-1 is mounted on the S7-300 rail and connected through the bus connector with the neighboring modules. No slot rules apply.
• Fan-free operation;
  A back-up battery is not required.
• Using the IM 360/361, the CP 343-1 can also be operated in the expansion rack (ER)
• Modules can be replaced without the need for a programming device