PLC – 6ES7312-5BF04-0AB0

1.  SIMATIC S7-300, IMATIC S7-300, CPU 312C Compact CPU with MPI, 10 DI/6 DQ, 2 high-speed counters (10 kHz) Integr. power supply 24 V DC, work memory 64 KB, Front connector (1x 40-pole) and Micro Memory Card required
2. Area of application
   The 312C CPU is a compact CPU for small applications with high requirements in terms of processing speed. Integrated
   digital inputs and outputs enable a direct connection to the process.
   Additional possibilities of use are provided with the integrated process-related functions:
   • Count
   • Frequency measurement
   Design
   The 312C CPU includes:
   • Microprocessor;
   the processor reaches a processing time of 200 – 400 ns per binary instruction
   • Extended memory;
   16 KB fast RAM (corresponds to about 5 K instructions) for execution-relevant program parts provide user programs
   with sufficient space;
   Micro memory cards (4 MB max.) as load memory for the program allow additional projects to be stored (including
   symbols and comments) in the CPU.
   • Flexible expansion;
3. up to 8 modules, (single line structure)
   • Multi-point interface MPI;
   the integrated MPI interface can establish up to 6 simultaneous connections to S7-300®/400® or to PG, PC, OP.
   Among these connections, one is always reserved for PG and another for OP. The MPI can be used to establish a
   simple network with up to 16 CPUs using the “Global data communication”.
   • Password protection;
   a password concept protects the user program from unauthorized access.
   • Diagnostics buffer;
   the last 100 error and interrupt events are stored in a buffer for diagnostics purposes.
   • Maintenance-free data back-up;
   the CPU automatically writes retentive data to the micro memory card in case of power failure, so that it remains
   available unchanged when the power is turned on again.

   • Integrated I/Os;

   10 digital inputs (all for interrupt handling) and 6 digital outputs are available on the 312C CPU for connecting the
   process signals.
   • Integrated communications functions;
   – Programming device/OP communications
   – S7 standard communication
   – S7 communication (server only)

CPU312C

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