General information | |
Product type designation | CPU 1212C DC/DC/DC |
Supply voltage | |
Rated value (DC) | |
| Yes |
permissible range, lower limit (DC) | 20.4 V |
permissible range, upper limit (DC) | 28.8 V |
Reverse polarity protection | Yes |
Load voltage L+ | |
| 24 V |
| 20.4 V |
| 28.8 V |
Input current | |
Current consumption (rated value) | 400 mA; Typical |
Inrush current, max. | 12 A; at 28.8 V DC |
Output current | |
for backplane bus (5 V DC), max. | 890 mA; Max. 5 V DC for SM and CM |
Encoder supply | |
24 V encoder supply | |
| Permissible range: 20.4V to 28.8V |
Power loss | |
Power loss, typ. | 9 W |
Memory | |
Work memory | |
| 50 kbyte |
| No |
Load memory | |
| 1 Mbyte |
| 2 Gbyte; with SIMATIC memory card |
Backup | |
| Yes; maintenance-free |
| Yes |
CPU processing times | |
for bit operations, typ. | 0.085 µs; / Operation |
for word operations, typ. | 1.7 µs; / Operation |
for floating point arithmetic, typ. | 2.3 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 | |
| Limited only by RAM for code |
Data areas and their retentivity | |
Retentive data area (incl. timers, counters, flags), max. | 10 kbyte |
Flag | |
| 4 kbyte; Size of bit memory address area |
Address area | |
I/O address area | |
| 1 024 byte |
| 1 024 byte |
Process image | |
| 1 kbyte |
| 1 kbyte |
Hardware configuration | |
Number of modules per system, max. | 3 comm. modules, 1 signal board, 2 signal modules |
Time of day | |
Clock | |
| Yes |
| 480 h; Typical |
| 60 s/month at 25 °C |
Digital inputs | |
Number of digital inputs | 8; Integrated |
| 6; HSC (High Speed Counting) |
Source/sink input | Yes |
Number of simultaneously controllable inputs | |
all mounting positions | |
| 8 |
Input voltage | |
| 24 V |
| 5 V DC at 1 mA |
| 15 V DC at 2.5 mA |
Input current | |
| 1 mA |
Input delay (for rated value of input voltage) | |
for standard inputs | |
| 0.1 / 0.2 / 0.4 / 0.8 / 1.6 / 3.2 / 6.4 / 10.0 / 12.8 / 20.0 Ојs; 0.05 / 0.1 / 0.2 / 0.4 / 0.8 / 1.6 / 3.2 / 6.4 / 10.0 / 12.8 / 20.0 ms |
| 0.1 µs |
| 20 ms |
for interrupt inputs | |
| Yes |
for counter/technological functions | |
| Single phase: 3 @ 100 kHz & 1 @ 30 kHz, differential: 3 @ 80 kHz & 1 @ 30 kHz |
Cable length | |
| 500 m; 50 m for technological functions |
| 300 m; For technological functions: No |
Digital outputs | |
Number of digital outputs | 6 |
| 4; 100 kHz Pulse Train Output |
Limitation of inductive shutdown voltage to | L+ (-48 V) |
Switching capacity of the outputs | |
| 0.5 A |
| 5 W |
Output voltage | |
| 0.1 V; with 10 kOhm load |
| 20 V |
Output current | |
| 0.5 A |
| 0.1 mA |
Output delay with resistive load | |
| 1 µs |
| 3 µs |
Switching frequency | |
| 100 kHz |
Cable length | |
| 500 m |
| 150 m |
Analog inputs | |
Number of analog inputs | 2 |
Input ranges | |
| Yes |
Input ranges (rated values), voltages | |
| Yes |
| ≥100k ohms |
Cable length | |
| 100 m; twisted and shielded |
Analog outputs | |
Number of analog outputs | 0 |
Analog value generation for the inputs | |
Integration and conversion time/resolution per channel | |
| 10 bit |
| Yes |
| 625 µs |
Encoder | |
Connectable encoders | |
| Yes |
1. Interface | |
Interface type | PROFINET |
Physics | Ethernet |
Isolated | Yes |
automatic detection of transmission rate | Yes |
Autonegotiation | Yes |
Autocrossing | Yes |
Functionality | |
| Yes |
| Yes |
| Yes |
| Yes |
PROFINET IO Controller | |
| 100 Mbit/s |
Services | |
| 16 |
PROFINET IO Device | |
Services | |
| Yes |
| 2 |
Protocols | |
Supports protocol for PROFINET IO | Yes |
PROFIBUS | Yes; CM 1243-5 required |
AS-Interface | Yes |
Protocols (Ethernet) | |
| Yes |
Open IE communication | |
| Yes |
| Yes |
| Yes |
Web server | |
| Yes |
Further protocols | |
| Yes |
Communication functions | |
S7 communication | |
| Yes |
| Yes |
| Yes |
Web server | |
| Yes |
Number of connections | |
| 16; dynamically |
Test commissioning functions | |
Status/control | |
| Yes |
| Inputs/outputs, memory bits, DBs, distributed I/Os, timers, counters |
Forcing | |
| Yes |
Diagnostic buffer | |
| Yes |
Traces | |
| 2; Up to 512 KB of data per trace are possible |
Integrated Functions | |
Number of counters | 4 |
Counting frequency (counter) max. | 100 kHz |
Frequency measurement | Yes |
controlled positioning | Yes |
Number of position-controlled positioning axes, max. | 8 |
Number of positioning axes via pulse-direction interface | 4; With integrated DO |
PID controller | Yes |
Number of alarm inputs | 4 |
Number of pulse outputs | 4 |
Limit frequency (pulse) | 100 kHz |
Potential separation | |
Potential separation digital inputs | |
| 500V AC for 1 minute |
| 1 |
Potential separation digital outputs | |
| Yes |
| No |
| 1 |
Isolation | |
Isolation tested with | According to EN 50155 (routine test) |
EMC | |
Interference immunity against discharge of static electricity | |
| Yes |
| 8 kV |
| 6 kV |
Interference immunity to cable-borne interference | |
| Yes |
| Yes |
Interference immunity against voltage surge | |
| Yes |
Interference immunity against conducted variable disturbance induced by high-frequency fields | |
| Yes |
Emission of radio interference acc. to EN 55 011 | |
| Yes; Group 1 |
| 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 | |
| Yes |
Standards, approvals, certificates | |
Railway application | |
| Yes; EMC for rail vehicles |
| Yes; EMC for signal and telecommunications systems |
| Yes; Railway applications - overvoltage category OV2; pollution degree PD2; rated surge voltage UNi = 0.5 kV; UNm = 24 V DC |
| Yes; Rail vehicles - see ambient conditions |
| Yes; Stationary electrical equipment - see ambient conditions |
| Yes; Signal and telecommunications systems - see ambient conditions; vibrations and shocks: Application point outside of tracks (1 m to 3 m away from track) |
| Yes; Rail vehicles - temperature class T1, horizontal mounting position, salt spray Class ST2 |
| Yes; Rail vehicles - vibrations and shocks: Category 1 Class A/B |
| Yes; Rail vehicles - verification on request |
Ambient conditions | |
Free fall | |
| 0.3 m; five times, in product package |
Ambient temperature during operation | |
| -25 °C; = Tmin; Startup @ -25 °C |
| 60 °C; Number of simultaneously activated inputs or outputs: 4 or 3 (no adjacent points) at 60 °C horizontal, 8 or 6 at 55 °C horizontal; 70 °C for 10 minutes (T1 acc. to EN 50155) |
Ambient temperature during storage/transportation | |
| -40 °C |
| 70 °C |
Altitude during operation relating to sea level | |
| Tmin ... Tmax at 1080 hPa ... 795 hPa (-1000 m ... +2000 m) |
Relative humidity | |
| 100 %; RH incl. condensation/frost (no commissioning under condensation conditions) |
Vibrations | |
| 2 g (m/sІ) wall mounting, 1 g (m/sІ) DIN rail |
| Yes |
Shock testing | |
| Yes; IEC 68, Part 2-27 half-sine: strength of the shock 15 g (peak value), duration 11 ms |
Use in stationary industrial systems | |
| Yes; Class 3B2 mold, fungus and dry rot spores (with the exception of fauna); Class 3B3 on request |
| Yes; Class 3C4 (RH < 75%) incl. salt spray according to EN 60068-2-52 (degree of severity 3). The supplied connector covers must remain on the unused interfaces during operation! |
| Yes; Class 3S4 incl. sand, dust. The supplied connector covers must remain on the unused interfaces during operation! |
Use on land craft, rail vehicles and special-purpose vehicles | |
| Yes; Class 5B2 mold, fungus and dry rot spores (with the exception of fauna); Class 5B3 on request |
| Yes; Class 5C3 (RH < 75%) including salt spray according to EN 50155 (ST2). The supplied plug covers must remain in place over the unused interfaces during operation! |
| Yes; Class 5S3 including sand and dust. The supplied plug covers must remain in place over the unused interfaces during operation! |
Programming | |
Programming language | |
| Yes |
| Yes |
| Yes |
Cycle time monitoring | |
| Yes |
Dimensions | |
Width | 90 mm |
Height | 100 mm |
Depth | 75 mm |
Weights | |
Weight, approx. | 370 g |
Other | |
Note: | For use in railway applications, also observe the product information "SIPLUS extreme RAIL" A5E37661960A Online Support article 109736776 |