CPU 1211C DC/DC/DC

User memory Work: 50Kbytes

User memory Load:  1Mbyte internal, expandable up to SD card size

User memory Retentive: 10Kbytes

Onboard digital I/O: 6 inputs/4 outputs

Onboard analog I/O: 2 inputs

Process image size: 1024 bytes of inputs (I)/ 1024 bytes of outputs (Q)

Bit memory (M): 4096 bytes

Temporary (local) memory: 16Kbytes for startup and program cycle, 6Kbytes for each of the other interrupt priority levels.

Signal modules expansion: none

SB, CB, BB expansion: 1 max

Communication module expansion: 3CMs max

High-speed counters: 100 kHz (Ia.0 to Ia.5)

Pulse outputs: Up to 4 configured to use any built-in or SB outputs, 100kHz (Qa.0 to Qa.3)

Pulse catch inputs: 6

Time delay interrupts: 4 total with 1ms resolution

Cyclic interrupt: 4 total with 1ms resolution

Edge interrupts: 6 rising and 6 falling (10 and 10 with optional signal board)

Memory card: SIMATIC memory card (optional)

Real time clock accuracy: +/- 60 seconds/ month

Real time clock retention time: 20 days typ./ 12days min.

Ethernet port: 1

HMI device: 4

Data rates 10/100Mb/s