PLC SIEMENS S7 318

- User memory : 512 Kbytes (256 Kbytes code, 256 Kbytes data)               

- Loading memory:                                                           

  + 64 Kbytes integrated                                                    

  + FEPROM/RAM memory cards up to 4 Mbytes                                  

- I/O address area: 8 Kbytes                                                

  + i.e. DI/DO max. : 16384  of which 1024 are centralised                  

  + And AI/AO max.  :  2048  of which  128 are centralised                  

- Retentive data:                                                           

  - Without battery: 8 Kbytes (flags, timers, counters, data)               

  - With battery:    all software blocks                                    

- Max. number of blocks: 1024 FC, 1024 FB, 2047 DB                          

- Execution times:                                                          

  - Binary operations:        100 ns                                        

  - Word operations:          100 ns                                        

  - Timer/counter operations: 100 ns                                        

  - Fixed-point addition:     100 ns                                        

  - Floating-point addition:  600 ns                                        

- Flags         8192  (can be set retentive)                                

- Counters       512  (can be set retentive)                                

- Timers         512  (can be set retentive)                                

The no. of IEC1131 timers and counters is unlimited (10 bytes per timer/    

counter in the user program).                                                                                                                     

- The MPI port supports:                                                    

  - PG/OP communication                                                     

  - Global data communication                                               

  - S7 basic communication                                                  

  - S7 communication (server only)                                          

  - Transmission rates: 12 Mbit/s, 187.5 kbit/s or 19.6 kbit/s              

- PROFIBUS DP port (master or slave):                                       

  - Transmission rate: up to 12 Mbaud                                       

  - Stations: up to 96 ET 200 stations                                      

  - PG/OP communication                                                     

  - Max. 244 bytes of process data per ET 200 station