Product Description
| General information | ||
| Product type designation | CPU 1211C DC/DC/relay | |
| Firmware version | V4.6 | |
| Engineering with | ||
| ● Programming package | STEP 7 V18 or higher | |
| Supply voltage | ||
| Rated value (DC) | ||
| ● 24 V 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+ | ||
| ● Rated value (DC) | 24 V | |
| ● permissible range, lower limit (DC) | 20.4 V | |
| ● permissible range, upper limit (DC) | 28.8 V | |
| Input current | ||
| Current consumption (rated value) | 300 mA; CPU only | |
| Current consumption, max. | 900 mA; CPU with all expansion modules | |
| Inrush current, max. | 12 A; at 28.8 V DC | |
| I²t | 0.8 A²·s | |
| Output current | ||
| for backplane bus (5 V DC), max. | 750 mA; Max. 5 V DC for CM | |
| Encoder supply | ||
| 24 V encoder supply | ||
| ● 24 V | L+ minus 4 V DC min. | |
| Power loss | ||
| Power loss, typ. | 8 W | |
| Memory | ||
| Work memory | ||
| ● integrated | 0.75 kbyte | |
| Load memory | ||
| ● integrated | 1 Mbyte | |
| ● Plug-in (SIMATIC Memory Card), max. | with SIMATIC memory card | |
| Backup | ||
| ● present | Yes | |
| ● maintenance-free | Yes | |
| ● without battery | Yes | |
| CPU processing times | ||
| for bit operations, typ. | 0.08 µs; / instruction | |
| for word operations, typ. | 1.7 µs; / instruction | |
| for floating point arithmetic, typ. | 2.3 µs; / instruction | |
| 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. | 14 kbyte | |
| Flag | ||
| ● Size, max. | 4 kbyte; Size of bit memory address area | |
| Local data | ||
| ● per priority class, max. | 16 kbyte; Priority class 1 (program cycle): 16 KB, priority class 2 to 26: 6 KB | |
| Address area | ||
| Process image | ||
| ● Inputs, adjustable | 1 kbyte | |
| ● Outputs, adjustable | 1 kbyte | |
| Hardware configuration | ||
| Number of modules per system, max. | 3 communication modules, 1 signal board | |
| Time of day | ||
| Clock | ||
| ● Hardware clock (real-time) | Yes | |
| ● Backup time | 480 h; Typical | |
| ● Deviation per day, max. | ±60 s/month at 25 °C | |
| Digital inputs | ||
| Number of digital inputs | 6; Integrated | |
| ● of which inputs usable for technological functions | 6; HSC (High Speed Counting) | |
| Source/sink input | Yes | |
| Number of simultaneously controllable inputs | ||
| all mounting positions | ||
| — up to 40 °C, max. | 6 | |
| 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. | 4 mA; nominal | |
| 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 @ 100 kHz, differential: 3 @ 80 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 | 4; Relays | |
| 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. | |
| Relay outputs | ||
| ● Number of relay outputs | 4 | |
| ● 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 | ||
| Number of analog outputs | 0 | |
| 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 | |
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