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.
Siemens 6ES7222-5BH50-0XB0 is a SIMATIC S7-1200 SM 1222 digital output module with 16 sourcing transistor outputs rated 24 V DC at 0.5 A each, arranged in two groups of 8. It runs from a 20.4-28.8 V DC supply, draws 120 mA max from the backplane bus, and reports diagnostic alarms per channel group through a DIAG LED.
The 16DO/0.5A sourcing variant fits applications that need more output points per module than the 8-output SM 1222 - two isolated groups of 8 keep a field-wiring fault on one group from affecting the other. Short-circuit protection is not built in, per the verified spec, so external fusing or a protected 24 V source is required on the output side, unlike relay-output SM 1222 variants that tolerate higher inrush without external fusing. A relay-output SM 1222 is the better fit instead if the application needs to switch AC loads or currents above 0.5 A per point.
Adds digital output points to an S7-1200 station for driving 24 V DC solenoids, indicator lamps, and PLC-to-PLC signaling where transistor switching speed (50/200 us) matters more than AC load capability.
| Product type designation | SM 1222, DQ 16x 24 V DC/0.5 A |
|---|
| Rated value (DC) | 24 V |
|---|---|
| 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 |
|---|---|
| Digital outputs: from load voltage L+, max. | 45 mA |
| Part number | 6ES7222-5BH50-0XB0 |
|---|---|
| Type designation | SM 1222, DQ 16x 24 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 | 4047623417309 |
| ETIM class | EC001419 |
| eCl@ss | 27242204 |
| Power loss, typ. | 3.5 W |
|---|
| Number of digital outputs | 16 |
|---|---|
| in groups of | 8 |
| Short-circuit protection | No; to be provided externally |
| Limitation of inductive shutdown voltage to Switching capacity of the outputs | typ. (L+) -40 V, 1 W dissipation |
| 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. | L+ (-0.5 V) |
| 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 (Group of 8) |
| Cable length: shielded, max. | 500 m |
| Cable length: unshielded, max. | 150 m |
| Diagnostics function | Yes |
|---|---|
| Alarms: Diagnostic alarm | Yes |
| Diagnoses: Monitoring the supply voltage | Yes |
| Diagnostics indication LED: DIAG LED | Yes |
| Diagnostics indication LED: for status of the outputs | Yes |
| Potential separation digital outputs: between the channels, in groups of | 8 |
|---|---|
| Potential separation digital outputs: between the channels and backplane bus | 707 V DC (type test) |
| Isolation tested with | 707 V DC (type test) |
|---|
| IP degree of protection | IP20 |
|---|
| Siemens Eco Profile (SEP) | Siemens EcoTech |
|---|---|
| CE mark | Yes |
| CSA approval | No |
| UL approval | Yes |
| cULus | Yes |
| FM approval | No |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Marine approval | No |
| Ecological footprint: environmental product declaration Global warming potential | Yes; type 2 acc. to ISO 14021 |
| Ecological footprint: global warming potential, (total) [CO2 eq] | 40.3 kg |
| Ecological footprint: global warming potential, (during production) [CO2 eq] | 7.79 kg |
| Ecological footprint: global warming potential, (during operation) [CO2 eq] | 32.5 kg |
| Ecological footprint: global warming potential, (after end of life cycle) [CO2 eq] | -0.089 kg |
| Free fall: Fall height, max. | 0.3 m; five times, in product package |
|---|---|
| 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: Operation, min. | 540 hPa |
| Air pressure acc. to IEC 60068-2-13: Operation, max. | 1 140 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, min. | 540 hPa |
| Air pressure acc. to IEC 60068-2-13: Storage/transport, max. | 1 140 hPa |
| Altitude during operation relating to sea level: Installation altitude, min. | -1 000 m |
| Relative humidity: Operation at 25 ℃ without condensation, max. | 95 % |
| Vibrations: Vibration resistance during operation acc. to IEC 60068-2-6 | 3.5 mm from 5 - 8.4 Hz, 1g from 8.4 - 150 Hz |
| Vibrations: Operation, tested according to IEC 60068-2-6 | Yes |
| Shock testing: 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 |
| Pollutant concentrations: SO2 at RH < 60% without condensation | S02: < 0.5 ppm; H2S: < 0.1 ppm; RH < 60 % condensation-free |
| required front connector | No |
|---|
| Enclosure material (front): Plastic | Yes |
|---|
| Width | 30 mm |
|---|---|
| Height | 125 mm |
| Depth | 100 mm |
| Weight, approx. | 173 g |
|---|
| General Product Approval | Miscellaneous For use in hazard- |
|---|---|
| General Product Approval EMV | ous locations |
| China RoHS Manufacturer Declara- | tion |
| Miscellaneous CCC-Ex CCC-Ex Type Test Certific- | ates/Test Report |
|---|
| Net weight | 0.173 kg |
|---|---|
| Package dimensions | 150 × 47 × 110 mm |
| Country of origin | CN |
| Shipping weight | 0.673 kg |
| Ships from | Türkiye |
| Dispatch | 16 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 16x 24 V DC/0.5 A is 0.5 A.
The rated operational voltage of SM 1222, DQ 16x 24 V DC/0.5 A is 24 V AC.
The tariff (HS) code on file for SM 1222, DQ 16x 24 V DC/0.5 A is 85389091.
The EAN (GTIN) of SM 1222, DQ 16x 24 V DC/0.5 A is 4047623417309.
SM 1222, DQ 16x 24 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.
PLC selection guide for engineers covering IEC 61131 compliance, Siemens, Rockwell, Schneider, ABB comparison, scan time sizing, and wiring. Shop at Stoklink.
Learn how a PLC works, including scan cycle, I/O sizing, IEC 61131-3 programming, and hardware selection for ABB, Schneider, and Siemens. Shop at Stoklink.
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.