Programmable Logic Controller Guide: Selection, Application, and Maintenance for Engineers
PLC selection guide for engineers covering IEC 61131 compliance, Siemens, Rockwell, Schneider, ABB comparison, scan time sizing, and wiring. Shop at Stoklink.
The Siemens SIMATIC S7-1200 SM 1222 (6ES7222-1BF32-0XB0) is a digital output module with 8 transistor outputs rated 24 V DC at 0.5 A each, adding discrete DO capacity to an S7-1200 station over the backplane bus. It has no internal short-circuit protection, isolates outputs from the backplane bus at 500 V AC, and draws 1.5 W typical inside a 45 x 100 x 75 mm, 0.155 kg housing rated IP20.
No internal short-circuit protection means the output group needs an external fuse or breaker sized to the 0.5 A per channel rating. Choose the relay-output SM 1222 variant in the same family instead when the load needs AC switching or higher inrush tolerance than a 0.5 A transistor output allows.
Adds transistor DO capacity to an S7-1200 CPU for driving 24 V DC loads such as solenoid valves, indicator lamps, or small contactor coils within the module's 0.5 A per-channel rating.
| Product type designation | SM 1222, DQ 8x24 V DC/0.5 A |
|---|
| permissible range, lower limit (DC) | 20.4 V |
|---|---|
| permissible range, upper limit (DC) | 28.8 V |
| from backplane bus 5 V DC, max. | 120 mA |
|---|
| Part number | 6ES7222-1BF32-0XB0 |
|---|---|
| Type designation | SM 1222, DQ 8x24 V DC/0.5 A |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 6940408101937 |
| ETIM class | EC001419 |
| eCl@ss | 27242204 |
| Power loss, typ. | 1.5 W |
|---|
| Number of digital outputs | 8 |
|---|---|
| in groups of | 1 |
| Short-circuit protection | No; to be provided externally |
| Limitation of inductive shutdown voltage to Switching capacity of the outputs | typ. (L+) -48 V |
| with resistive load, max. | 0.5 A |
| on lamp load, max. | 5 W |
| Output voltage: Rated value (DC) | 24 V |
| Output voltage: for signal "0", max. | 0.1 V; with 10 kOhm load |
| Output voltage: for signal "1", min. | 20 V DC |
| Output current: for signal "1" rated value | 0.5 A |
| Output current: for signal "0" residual current, max. | 10 µA |
| Output delay with resistive load: "0" to "1", max. | 50 µs |
| Output delay with resistive load: "1" to "0", max. | 200 µs |
| Total current of the outputs (per group) horizontal installation: up to 50 °C, max. | 4 A; Current per mass |
| Cable length: shielded, max. | 500 m |
| Cable length: unshielded, max. | 150 m |
| Alarms: Diagnostic alarm | Yes |
|---|---|
| Diagnostics indication LED: for status of the outputs | Yes |
| Potential separation digital outputs: between the channels, in groups of | 1 |
|---|---|
| Potential separation digital outputs: between the channels and backplane bus | 500 V AC |
| IP degree of protection | IP20 |
|---|
| CE mark | Yes |
|---|---|
| CSA approval | Yes |
| UL approval | Yes |
| cULus | Yes |
| FM approval | Yes |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Marine approval | Yes |
| Ecological footprint: environmental product declaration Global warming potential | Yes |
| Ecological footprint: global warming potential, (total) [CO2 eq] | 68.6 kg |
| Ecological footprint: global warming potential, (during production) [CO2 eq] | 8.16 kg |
| Ecological footprint: global warming potential, (during operation) [CO2 eq] | 60.7 kg |
| Ecological footprint: global warming potential, (after end of life cycle) [CO2 eq] | -0.334 kg |
| Free fall: Fall height, max. | 0.3 m; five times, in product package |
|---|---|
| Ambient temperature during operation: min. | -20 °C |
| Ambient temperature during operation: max. | 60 °C |
| Ambient temperature during operation: horizontal installation, min. | -20 °C |
| Ambient temperature during operation: vertical installation, min. | -20 °C |
| Ambient temperature during operation: permissible temperature change | 5°C to 55°C, 3°C / minute |
| Ambient temperature during storage/transportation: min. | -40 °C |
| Ambient temperature during storage/transportation: max. | 70 °C |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, min. | 660 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, max. | 1 080 hPa |
| Relative humidity: Operation at 25 ℃ without condensation, max. | 95 % |
| required front connector | Yes |
|---|
| Enclosure material (front): Plastic | Yes |
|---|
| Width | 45 mm |
|---|---|
| Height | 100 mm |
| Depth | 75 mm |
| Weight, approx. | 180 g |
|---|
| eClass | 12 27-24-22-04 |
|---|---|
| ETIM | 10 EC001419 |
| IDEA | 4 3566 |
| UNSPSC | 15 32-15-17-05 |
| Net weight | 0.153 kg |
|---|---|
| Country of origin | DE |
| Shipping weight | 0.653 kg |
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of SM 1222, DQ 8x24 V DC/0.5 A is 0.5 A.
The rated operational voltage of SM 1222, DQ 8x24 V DC/0.5 A is 24 V AC.
The tariff (HS) code on file for SM 1222, DQ 8x24 V DC/0.5 A is 85389091.
The EAN (GTIN) of SM 1222, DQ 8x24 V DC/0.5 A is 6940408101937.
SM 1222, DQ 8x24 V DC/0.5 A ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
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