SIEMENS
SIMATIC S7-1200, CPU 1212C compact CPU, DC/DC/relay, onboard I/O: 8 DI 24 V DC, 6 DO relay 2 A, 2 AI 0–10 V DC, DC power supply 20.4–28.8 V, 100 KB program/data memory.
The Siemens 6ES7212-1HE40-0XB0 is a high-performance SIMATIC S7-1200 CPU 1212C compact controller engineered for versatile industrial automation tasks. Designed with integrated digital and analog I/O, reliable relay outputs, and robust DC power compatibility, this compact PLC offers powerful processing, flexible expansion options, and seamless integration into modern automation systems. Its compact size paired with strong functionality makes it ideal for small to mid-scale automation applications requiring precision, stability, and long-term operational excellence.
Compact & powerful PLC for wide industrial applications
Integrated onboard I/O reduces the need for additional modules
Reliable relay outputs ensure stable switching for diverse loads
Flexible DC power input (20.4–28.8 V) for industrial reliability
High 100 KB program/data memory for advanced logic operations
Seamless integration with TIA Portal for easy configuration
Future-ready expandability with communication and I/O modules
1. Integrated Onboard I/O
8 Digital Inputs (24 V DC) suitable for sensors and switches
6 Relay Outputs (2 A) compatible with AC/DC load switching
2 Analog Inputs (0–10 V DC) for precise sensor measurement
2. Compact & Efficient Design
Designed for small control panels
Saves wiring and installation time
Provides simplified maintenance
3. High Processing Power
100 KB program/data memory
Fast execution times for real-time automation
4. Industrial-Grade Power Supply
Operates reliably at DC 20.4–28.8 V
Stable operation even under voltage fluctuations
5. Communication & Integration
Supports PROFINET communication
Ready for remote diagnostics, programming, and data exchange
Machinery automation
Manufacturing lines
Packaging systems
Process automation
Building automation
Material handling systems
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| SKU / Model | 6ES7212-1HE40-0XB0 |
|---|---|
| Brand | SIEMENS |
| Product type designation | CPU 1212C DC/DC/relay |
| Firmware version | V4.5 |
| ● Programming package | STEP 7 V17 or higher |
| 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 |
| ● permissible range, lower limit (DC) | 20.4 V |
| ● permissible range, upper limit (DC) | 28.8 V |
| Current consumption (rated value) | 400 mA; CPU only |
| Current consumption, max. | 1 200 mA; CPU with all expansion modules |
| Inrush current, max. | 12 A; at 28.8 V |
| I²t | 0.8 A²·s |
| for backplane bus (5 V DC), max. | 1 000 mA; Max. 5 V DC for SM and CM |
| ● 24 V | L+ minus 4 V DC min. |
| Power loss, typ. | 9 W |
| ● expandable | No |
| ● integrated | 2 Mbyte |
| ● Plug-in (SIMATIC Memory Card), max. | with SIMATIC memory card |
| ● maintenance-free | Yes |
| ● without battery | Yes |
| 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 |
| 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 |
| ● Number, max. | Limited only by RAM for code |
| Retentive data area (incl. timers, counters, flags), max. | 14 kbyte |
| ● Size, max. | 4 kbyte; Size of bit memory address area |
| ● per priority class, max. | 16 kbyte; Priority class 1 (program cycle): 16 KB, priority class 2 to 26: 6 KB |
| ● Inputs, adjustable | 1 kbyte |
| ● Outputs, adjustable | 1 kbyte |
| Number of modules per system, max. | 3 comm. modules, 1 signal board, 2 signal modules |
| ● Hardware clock (real-time) | Yes |
| ● Backup time | 480 h; Typical |
| ● Deviation per day, max. | ±60 s/month at 25 °C |
| Number of digital inputs | 8; Integrated |
| ● of which inputs usable for technological functions | 6; HSC (High Speed Counting) |
| Source/sink input | Yes |
| — up to 40 °C, max. | 8 |
| ● Rated value (DC) | 24 V |
| ● for signal "0" | 5 V DC at 1 mA |
| ● for signal "1" | 15 V DC at 2.5 mA |
| — at "0" to "1", min. | 0.2 ms |
| — at "0" to "1", max. | 12.8 ms |
| — parameterizable | Single phase: 3 @ 100 kHz & 3 @ 30 kHz, differential: 3 @ 80 kHz & 3 @ 30 kHz |
| Number of digital outputs | 6; Relays |
| ● with resistive load, max. | 2 A |
| ● on lamp load, max. | 30 W with DC, 200 W with AC |
| ● "0" to "1", max. | 10 ms; max. |
| ● "1" to "0", max. | 10 ms; max. |
| ● Number of relay outputs | 6 |
| ● Number of operating cycles, max. | mechanically 10 million, at rated load voltage 100 000 |
| ● unshielded, max. | 150 m |
| Number of analog inputs | 2 |
| ● Voltage | Yes |
| ● 0 to +10 V | Yes |
| — Input resistance (0 to 10 V) | ≥100k ohms |
| ● shielded, max. | 100 m; twisted and shielded |
| Number of analog outputs | 0 |
| ● Resolution with overrange (bit including sign), max. | 10 bit |
| ● Integration time, parameterizable | Yes |
| ● Conversion time (per channel) | 625 µs |
| ● 2-wire sensor | Yes |
| Interface type | PROFINET |
| Isolated | Yes |
| automatic detection of transmission rate | Yes |
| Autonegotiation | Yes |
| Autocrossing | Yes |
| ● RJ 45 (Ethernet) | Yes |
| ● Number of ports | 1 |
| ● integrated switch | No |
| ● PROFINET IO Controller | Yes |
| ● PROFINET IO Device | Yes |
| ● SIMATIC communication | Yes |
| ● Open IE communication | Yes; Optionally also encrypted |
| ● Web server | Yes |
| ● Media redundancy | No |
| ● Transmission rate, max. | 100 Mbit/s |
| — Prioritized startup | Yes |
| — Number of IO devices with prioritized startup, max. | 16 |
| — Number of connectable IO Devices, max. | 16 |
| — Number of connectable IO Devices for RT, max. | 16 |
| — of which in line, max. | 16 |
| — Activation/deactivation of IO Devices | Yes |
| — Number of IO Devices that can be simultaneously activated/deactivated, max. | 8 |
| — Updating time | The minimum value of the update time also depends on the communication component set for PROFINET IO, on the number of IO devices and the quantity of configured user data. |
| — PG/OP communication | Yes; encryption with TLS V1.3 pre-selected |
| — Isochronous mode | No |
| — IRT | No |
| — PROFIenergy | Yes |
| — Shared device | Yes |
| — Number of IO Controllers with shared device, max. | 2 |
| Supports protocol for PROFINET IO | Yes |
| PROFIsafe | No |
| PROFIBUS | Yes; CM 1243-5 (master) or CM 1242-5 (slave) required |
| OPC UA | Yes; OPC UA Server |
| AS-Interface | Yes; CM 1243-2 required |
| ● DHCP | No |
| ● SNMP | Yes |
| ● DCP | Yes |
| ● LLDP | Yes |
| — MRP | No |
| — MRPD | No |
| ● S7 routing | Yes |
| ● TCP/IP | Yes |
| ● ISO-on-TCP (RFC1006) | Yes |
| ● UDP | Yes |
| — Data length, max. | 1 472 byte |
| ● User-defined websites | Yes |
| ● Runtime license required | Yes; "Basic" license required |
| ● OPC UA Server | Yes; data access (read, write, subscribe), method call, runtime license required |
| — Application authentication | Available security policies: None, Basic128Rsa15, Basic256Rsa15, Basic256Sha256 |
| — User authentication | "anonymous" or by user name & password |
| — Number of sessions, max. | 10 |
| — Number of subscriptions per session, max. | 50 |
| — Sampling interval, min. | 100 ms |
| — Publishing interval, min. | 200 ms |
| — Number of server methods, max. | 20 |
| — Number of monitored items, max. | 1 000 |
| — Number of server interfaces, max. | 2 |
| — Number of nodes for user-defined server interfaces, max. | 2 000 |
| ● MODBUS | Yes |
| ● supported | Yes |
| ● as server | Yes |
| ● as client | Yes |
| ● User data per job, max. | See online help (S7 communication, user data size) |
| ● overall | PG Connections: 4 reserved / 4 max; HMI Connections: 12 reserved / 18 max; S7 Connections: 8 reserved / 14 max; Open User Connections: 8 reserved / 14 max; Web Connections: 2 reserved / 30 max; OPC UA Connections: 0 reserved / 10 max; Total Connections: 34 reserved / 64 max |
| ● Status/control variable | Yes |
| ● Variables | Inputs/outputs, memory bits, DBs, distributed I/Os, timers, counters |
| ● Forcing | Yes |
| ● present | Yes |
| ● Number of configurable Traces | 2 |
| ● Memory size per trace, max. | 512 kbyte |
| ● RUN/STOP LED | Yes |
| ● ERROR LED | Yes |
| ● MAINT LED | Yes |
| Counter | - |
| ● Number of counters | 6 |
| ● Counting frequency, 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 | Up to 4 with SB 1222 |
| PID controller | Yes |
| Number of alarm inputs | 4 |
| ● Potential separation digital inputs | 500V AC for 1 minute |
| ● Potential separation digital outputs | Relays |
| ● between the channels | No |
| ● between the channels, in groups of | 2 |
| ● 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 on supply lines acc. to IEC 61000-4-4 | Yes |
| ● Interference immunity on signal cables acc. to IEC 61000-4-4 | Yes |
| ● Interference immunity on supply lines acc. to IEC 61000-4-5 | Yes |
| ● Interference immunity against high-frequency radiation acc. to IEC 61000-4-6 | Yes |
| ● 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 |
| IP degree of protection | IP20 |
| CE mark | Yes |
| UL approval | Yes |
| cULus | Yes |
| FM approval | Yes |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Marine approval | Yes |
| ● Fall height, max. | 0.3 m; five times, in product package |
| ● horizontal installation, min. | -20 °C |
| ● horizontal installation, max. | 60 °C |
| ● vertical installation, min. | -20 °C |
| ● vertical installation, max. | 50 °C |
| ● min. | -40 °C |
| ● max. | 70 °C |
| ● Operation, min. | 795 hPa |
| ● Storage/transport, min. | 660 hPa |
| ● Storage/transport, max. | 1 080 hPa |
| ● Installation altitude, min. | -1 000 m |
| ● Installation altitude, max. | 5 000 m; Restrictions for installation altitudes > 2 000 m, see manual |
| ● Operation, max. | 95 %; no condensation |
| ● 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 |
| ● 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 |
| ● SO2 at RH < 60% without condensation | S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60% condensation-free |
| — LAD | Yes |
| — FBD | Yes |
| — SCL | Yes |
| ● User program protection/password protection | Yes |
| ● Copy protection | Yes |
| ● Block protection | Yes |
| ● protection of confidential configuration data | Yes |
| ● Protection level: Write protection | Yes |
| ● Protection level: Read/write protection | Yes |
| ● Protection level: Complete protection | Yes |
| ● adjustable | Yes |
| Width | 90 mm |
| Height | 100 mm |
| Depth | 75 mm |
| Weight, approx. | 385 g |
| last modified: | 4/12/2021 |
| Product Condition | Brand New, New - Backlog, New - No Original Box, New - Original Box Opened, Used - Average, Used - Below Average, Used - Excellent, Used - Fairly Good, Used - Good, Used - Poor, Used - Very Good |
| Weight | 0.354 kg |
| Dimensions | 10.40 × 10.70 × 8.80 mm |
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