General information |
Product type designation |
CPU 1212C AC/DC/relay |
Engineering with |
● Programming package |
STEP 7 V10.5 or higher |
Supply voltage |
Rated value (AC) |
|
● 120 V AC |
Yes |
● 230 V AC |
Yes |
permissible range, lower limit (AC) |
85 V |
permissible range, upper limit (AC) |
264 V |
Line frequency |
● permissible range, lower limit |
47 Hz |
● permissible range, upper limit |
63 Hz |
Load voltage L+ |
● Rated value (DC) |
24 V |
● permissible range, lower limit (DC) |
5 V |
● permissible range, upper limit (DC) |
250 V |
Input current |
Current consumption (rated value) |
80 mA at 120 V AC; 40 mA at 240 V AC |
Current consumption, max. |
240 mA at 120 V AC; 120 mA at 240 V AC |
Inrush current, max. |
20 A; at 264 V |
Output current |
for backplane bus (5 V DC), max. |
1 000 mA; Max. 5 V DC for SM and CM |
Encoder supply |
24 V encoder supply |
● 24 V |
Permissible range: 20.4V to 28.8V |
Power loss |
Power loss, typ. |
11 W |
Memory |
Work memory |
● integrated |
25 kbyte |
● expandable |
No |
Load memory |
● integrated |
1 Mbyte |
● Plug-in (SIMATIC Memory Card), max. |
24 Mbyte; with SIMATIC memory card |
Backup |
● present |
Yes; Entire project maintenance-free in the integral EEPROM |
● without battery |
Yes |
CPU processing times |
for bit operations, typ. |
0.1 µs; / Operation |
for word operations, typ. |
12 µs; / Operation |
for floating point arithmetic, typ. |
18 µs; / Operation |
CPU-blocks |
Number of blocks (total) |
DBs, FCs, FBs, counters and timers. The maximum number of addressable blocks ranges from 1 to 65535. There is no restriction, the entire working memory can be used |
OB |
● Number, max. |
Limited only by RAM for code |
Data areas and their retentivity |
Retentive data area (incl. timers, counters, flags), max. |
2 048 byte |
Flag |
● Number, max. |
4 kbyte; Size of bit memory address area |
Address area |
I/O address area |
● Inputs |
1 024 byte |
● Outputs |
1 024 byte |
Process image |
● Inputs, adjustable |
1 kbyte |
● Outputs, adjustable |
1 kbyte |
Hardware configuration |
Number of modules per system, max. |
3 comm. modules, 1 signal board, 2 signal modules |
Time of day |
Clock |
● Hardware clock (real-time) |
Yes |
● Backup time |
240 h; Typical |
● Deviation per day, max. |
±60 s/month at 25 °C |
Digital inputs |
Number of digital inputs |
8; Integrated |
● of which inputs usable for technological functions |
4; HSC (High Speed Counting) |
Source/sink input |
Yes |
Input voltage |
● Rated value (DC) |
24 V |
● for signal "0" |
5 V DC at 1 mA |
● for signal "1" |
15 V DC at 2.5 mA |
Input current |
● for signal "1", typ. |
1 mA |
Input delay (for rated value of input voltage) |
for standard inputs |
— parameterizable |
0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four |
— at "0" to "1", min. |
0.2 ms |
— at "0" to "1", max. |
12.8 ms |
for interrupt inputs |
— parameterizable |
Yes |
for technological functions |
— parameterizable |
Single phase: 3 at 100 kHz & 1 at 30 kHz, differential: 3 at 80 kHz & 1 at 30 kHz |
Cable length |
● shielded, max. |
500 m; 50 m for technological functions |
● unshielded, max. |
300 m; For technological functions: No |
Digital outputs |
Number of digital outputs |
6; Relays |
Short-circuit protection |
No; to be provided externally |
Switching capacity of the outputs |
● with resistive load, max. |
2 A |
● on lamp load, max. |
30 W with DC, 200 W with AC |
Output delay with resistive load |
● "0" to "1", max. |
10 ms; max. |
● "1" to "0", max. |
10 ms; max. |
Switching frequency |
● of the pulse outputs, with resistive load, max. |
1 Hz |
Relay outputs |
● Number of relay outputs |
6 |
● Number of operating cycles, max. |
mechanically 10 million, at rated load voltage 100 000 |
Cable length |
● shielded, max. |
500 m |
● unshielded, max. |
150 m |
Analog inputs |
Number of analog inputs |
2 |
Input ranges |
● Voltage |
Yes |
Input ranges (rated values), voltages |
● 0 to +10 V |
Yes |
● Input resistance (0 to 10 V) |
≥100k ohms |
Cable length |
● shielded, max. |
100 m; twisted and shielded |
Analog outputs |
Cable length |
● shielded, max. |
100 m; shielded, twisted pair |
Analog value generation for the inputs |
Integration and conversion time/resolution per channel |
● Resolution with overrange (bit including sign), max. |
10 bit |
● Integration time, parameterizable |
Yes |
● Conversion time (per channel) |
625 µs |
Encoder |
Connectable encoders |
● 2-wire sensor |
Yes |
1. Interface |
Interface type |
PROFINET |
Physics |
Ethernet |
Isolated |
Yes |
automatic detection of transmission rate |
Yes |
Autonegotiation |
Yes |
Autocrossing |
Yes |
Protocols |
● PROFINET IO Controller |
Yes |
Protocols |
Supports protocol for PROFINET IO |
No |
PROFIBUS |
No |
AS-Interface |
No |
Protocols (Ethernet) |
● TCP/IP |
Yes |
Open IE communication |
● TCP/IP |
Yes |
● ISO-on-TCP (RFC1006) |
Yes |
Web server |
● supported |
Yes |
● User-defined websites |
Yes |
Further protocols |
● MODBUS |
No |
Communication functions |
S7 communication |
● supported |
Yes |
● as server |
Yes |
Number of connections |
● overall |
15; dynamically |
Test commissioning functions |
Status/control |
● Status/control variable |
Yes |
● Variables |
Inputs/outputs, memory bits, DBs, distributed I/Os, timers, counters |
Forcing |
● Forcing |
Yes |
Integrated Functions |
Number of counters |
4 |
Counting frequency (counter) max. |
100 kHz |
Frequency measurement |
Yes |
controlled positioning |
Yes |
PID controller |
Yes |
Number of alarm inputs |
4 |
Potential separation |
Potential separation digital inputs |
● Potential separation digital inputs |
No |
● between the channels, in groups of |
1 |
Potential separation digital outputs |
● Potential separation digital outputs |
Yes; Relays |
● between the channels |
No |
● between the channels, in groups of |
2 |
Permissible potential difference |
between different circuits |
500 V DC between 24 V DC and 5 V DC |
EMC |
Interference immunity against discharge of static electricity |
● Interference immunity against discharge of static electricity acc. to IEC 61000-4-2 |
Yes |
— Test voltage at air discharge |
8 kV |
— Test voltage at contact discharge |
6 kV |
Interference immunity to cable-borne interference |
● Interference immunity on supply lines acc. to IEC 61000-4-4 |
Yes |
● Interference immunity on signal cables acc. to IEC 61000-4-4 |
Yes |
Interference immunity against voltage surge |
● on the supply lines acc. to IEC 61000-4-5 |
Yes |
Interference immunity against conducted variable disturbance induced by high-frequency fields |
● Interference immunity against high-frequency radiation acc. to IEC 61000-4-6 |
Yes |
Emission of radio interference acc. to EN 55 011 |
● Limit class A, for use in industrial areas |
Yes; Group 1 |
● Limit class B, for use in residential areas |
Yes; When appropriate measures are used to ensure compliance with the limits for Class B according to EN 55011 |
Degree and class of protection |
Degree of protection acc. to EN 60529 |
|
● IP20 |
Yes |
Standards, approvals, certificates |
CE mark |
Yes |
cULus |
Yes |
FM approval |
Yes |
RCM (formerly C-TICK) |
Yes |
Ambient conditions |
Free fall |
● Fall height, max. |
0.3 m; five times, in product package |
Ambient temperature during operation |
● min. |
0 °C |
● max. |
55 °C |
● horizontal installation, min. |
0 °C |
● horizontal installation, max. |
55 °C |
● vertical installation, min. |
0 °C |
● vertical installation, max. |
45 °C |
● permissible temperature change |
5°C to 55°C, 3°C / minute |
Ambient temperature during storage/transportation |
● min. |
-40 °C |
● max. |
70 °C |
Air pressure acc. to IEC 60068-2-13 |
● Operation, min. |
795 hPa |
● Operation, max. |
1 080 hPa |
● Storage/transport, min. |
660 hPa |
● Storage/transport, max. |
1 080 hPa |
Altitude during operation relating to sea level |
● Installation altitude, min. |
-1 000 m |
● Installation altitude, max. |
2 000 m |
Relative humidity |
● Operation, max. |
95 %; no condensation |
Vibrations |
● Vibration resistance during operation acc. to IEC 60068-2-6 |
2 g (m/s²) wall mounting, 1 g (m/s²) DIN rail |
● Operation, tested according to IEC 60068-2-6 |
Yes |
Shock testing |
● tested according to IEC 60068-2-27 |
Yes; IEC 68, Part 2-27 half-sine: strength of the shock 15 g (peak value), duration 11 ms |
Pollutant concentrations |
● SO2 at RH < 60% without condensation |
S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free |
Configuration |
Programming |
Programming language |
— LAD |
Yes |
— FBD |
Yes |
— SCL |
Yes |
Cycle time monitoring |
● adjustable |
Yes |
Dimensions |
Width |
90 mm |
Height |
100 mm |
Depth |
75 mm |
Weights |
Weight, approx. |
425 g |
last modified: |
01/31/2019 |