Siemens SIMATIC S7 System Manual page 681

Technical data
Current available (24 VDC)
Digital input current consumption
(24VDC)
Table A- 41 CPU features
Technical data
User memory Work
1
Load
Retentive
On-board digital I/O
On-board analog I/O
Process image size
Bit memory (M)
Temporary (local) memory
Signal modules expansion
Signal board expansion
Communication module expansion
High-speed counters
Pulse outputs
2
Pulse catch inputs
Time delay / cyclic interrupts
Edge interrupts
Memory card
Real time clock accuracy
Real time clock retention time
The size of the user program, data, and configuration is limited by the available load memory and work memory in the
1
CPU. There is no specific limit to the number of OB, FC, FB and DB blocks supported or to the size of a particular block;
the only limit is due to overall memory size.
For CPU models with relay outputs, you must install a digital signal board (SB) to use the pulse outputs.
2
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05
CPU 1214C
AC/DC/Relay
400 mA max.
(sensor power)
4 mA/input used
Description
50 Kbytes
2 Mbytes
2 Kbytes
14 inputs/10 outputs
2 inputs
1024 bytes of inputs (I)/1024 bytes of outputs (Q)
8192 bytes
16 Kbytes for startup and program cycle (including associated FBs and FCs)

4 Kbytes for standard interrupt events including FBs and FCs

4 Kbytes for error interrupt events including FBs and FCs

8 SMs max.
1 SB max.
3 CMs max.
6 total
Single phase: 3 at 100 kHz and 3 at 30 kHz clock rate

Quadrature phase: 3 at 80 kHz and 3 at 20 kHz clock rate

2
14
4 total with 1 ms resolution
12 rising and 12 falling (14 and 14 with optional signal board)
SIMATIC Memory Card (optional)
+/- 60 seconds/month
10 days typ./6 days min. at 40°C (maintenance-free Super Capacitor)
553BTechnical specifications
CPU 1214C
DC/DC/Relay
400 mA max.
(sensor power)
4 mA/input used
A.4 CPU 1214C
CPU 1214C
DC/DC/DC
400 mA max.
(sensor power)
4 mA/input used
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