CPU 1212C DC/DC/DC, 8DI/6DO/2AI, 24VDC, CE/CCC
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Siemens 6ES7212-1AE40-0XB0 is typically used in the following applications:
If your machine uses an older or different Siemens part number, the table below shows drop-in options. Send your exact part number to info@fouwell.com and we’ll confirm compatibility before shipment.
| Original Part Number | Compatibility Note |
|---|---|
6ES7212-1AE30-0XB0 | Direct predecessor — same firmware, same pin-out, drop-in replacement. |
6ES7212-1AE31-0XB0 | Earlier firmware revision — also compatible, same I/O count. |
6ES7212-1BE40-0XB0 | Different firmware signature — check project; can be migrated via TIA Portal. |
6ES7212-1HE40-0XB0 | AC/DC/RLY variant — same CPU, only PSU/relay outputs differ. Verify output type before swap. |
It is a Siemens SIMATIC S7-1200 CPU 1212C with DC/DC/DC power supply, 8 digital inputs, 6 digital outputs and 2 analog inputs, in 24 VDC — supplied with CE and CCC approvals. Fouwell sources this part from official Siemens channels and ships it worldwide with full traceability.
Yes. The 6ES7212-1AE40-0XB0 is fully supported by Siemens TIA Portal V13 SP1 and later, and by STEP 7 Basic in the same line. Programming, hardware configuration and firmware updates all work the same as other S7-1200 CPUs.
The 1212C sits in the middle of the family: bigger than the 1211C (6DI/4DO/2AI, 30 KB) but smaller than 1214C (14DI/10DO/2AI), 1215C (14DI/10DO/2AI/2AO with 2 PROFINET ports and analog outputs) and 1217C (16DI/16DO with 1 ns bit time). For 8DI/6DO/2AI it gives the best price-per-I/O and leaves expansion room via one SB (signal board) and up to 3 CM (communication) modules.
Bit memory (M) is 4 KB; counters, timers and function blocks are limited only by program memory (50 KB). Retentive data is 10 KB of non-volatile memory that survives power loss — enough to hold recipes, counters and operator setpoints without a battery. If your project needs more, move up to the 1214C (75 KB program / 10 KB retentive) or 1215C (100 KB / 10 KB).
The on-board PROFINET interface supports PROFINET IO (controller and device), S7 communication, TCP/IP, ISO-on-TCP, Modbus TCP (via library) and open user comm. Through the RS485 / CM 1241 add-on you get Modbus RTU master/slave, USS and ASCII. PROFINET also natively drives Siemens HMI (KTP / Comfort / Unified) and third-party HMI via the open Ethernet protocol.
In-stock units ship within 24 hours via DHL, FedEx or UPS with full insurance. Economy air freight to most Asian / Middle East / European destinations arrives in 3–5 working days; sea freight is available for larger orders. Each box ships in original Siemens packaging with an inspection report.
Yes. Every Fouwell-supplied Siemens part is 100% genuine, factory-sealed, and backed by a 12-month replacement warranty against manufacturing defects. Warranty does not cover damage from improper installation, lightning, or use outside the official Siemens specifications.
Yes. Send your original Siemens part number (e.g. 6ES7212-1AE30-0XB0 or any S7-1200 / S7-1500 / ET 200 code) to info@fouwell.com and our engineers will reply with current availability, alternatives and a price within one business day — usually within an hour during Asia/Shanghai office hours.
Still have a question? Send it to our engineers →
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