Product overview
1.1 Introducing the S7-1200 PLC
S7-1200 Programmable controller
28 System Manual, V4.2, 09/2016, A5E02486680-AK
Table 1- 1 Comparing the CPU models
User memory Work 50 Kbytes 75 Kbytes 100 Kbytes 125 Kbytes 150 Kbytes
Retentive 10 Kbytes
Local on-board I/O Digital 6 inputs/
8 inputs/
14 inputs/
Process image size
Signal module (SM) expansion
Signal board (SB), Battery board
(BB), or communication board
1
Communication module (CM)
3
High-speed coun-
ters
Up to 6 configured to use any built-in or SB inputs
100/
1
80
Ia.0 to Ia.5
1
200 kHz
3
Pulse outputs
2
Up to 4 configured to use any built-in or SB outputs
SIMATIC memory card (optional)
Data logs
Maximum 8 open at one time
500 MB per data log or as limited by maximum available load memory
Real time clock retention time
20 days, typ./12 day min. at 40 degrees C (maintenance-free Super Capacitor)
PROFINET
Ethernet communication port
1 2
Real math execution speed
The slower speed is applicable when the HSC is configured for quadrature mode of operation.
For CPU models with relay outputs, you must install a digital signal (SB) to use the pulse outputs.
3
Up to 200 kHz are available with the SB 1221 DI x 24 V DC 200 kHz and SB 1221 DI 4 x 5 V DC 200 kHz.
The different CPU models provide a diversity of features and capabilities that help you create
effective solutions for your varied applications. For detailed information about a specific
CPU, see the technical specifications (Page 1359).