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.
- Part number
- 6ES7222-1BH32-1XB0
- Model no
- SM 1222, DO 16x 24 V DC/0.5 A Sink
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SIMATIC S7-1200Siemens 6ES7222-1BH32-1XB0 SIMATIC S7-1200 SM 1222 16DO 24V DC PLC I/O Module
Siemens SIMATIC S7-1200 SM 1222 digital output module, 6ES7222-1BH32-1XB0, 16DO, 24V DC, sinking.
Description
About the SM 1222, DO 16x 24 V DC/0.5 A Sink
About the SM 1222, DO 16x 24 V DC/0.5 A Sink
The Siemens SIMATIC S7-1200 SM 1222 (6ES7222-1BH32-1XB0) is a digital output module with 16 sinking (NPN transistor) outputs rated 24 V DC at 0.5 A each, drawing 140 mA from the backplane bus and dissipating 2.5 W. Short-circuit protection is not built in and must be provided externally on each output.
Certifications & Standards
- CE
- CSA
- UL
- cULus
- FM
- RCM
- KC
- Marine
Selection Notes
The current-sinking (NPN) output configuration pairs with sourcing-type field devices, which matters when matching this module to existing wiring - the sourcing-output SM 1222 variant in the same family is the counterpart for sinking-input field devices. Because short-circuit protection is not built in, each output needs external fusing or a protected load if there's a risk of a shorted field wire. The 8 A max. current per module at horizontal mounting, against the lower 50°C vertical-mount ambient limit, sets how many of the 16 outputs can run near full 0.5 A simultaneously.
Applications
Expands SIMATIC S7-1200 CPU digital output count for machines needing more than the CPU's onboard DO - solenoid valves, indicator lamps, small relays - wired to sinking-compatible loads.
Specification
Full specification
General information 1
| Product type designation | SM 1222, DO 16x 24 V DC/0.5 A Sink |
|---|
Supply voltage 2
| permissible range, lower limit (DC) | 20.4 V |
|---|---|
| permissible range, upper limit (DC) | 28.8 V |
Input current 1
| from backplane bus 5 V DC, max. | 140 mA |
|---|
Show all 67 specifications ↓ Show less ↑63 more values in Identification, Power loss, Digital outputs, Interrupts/diagnostics/status information, Potential separation, Degree and class of protection, Standards, approvals, certificates, Ambient conditions, Connection method, Mechanics/material, Dimensions, Weights, Logistics.
Identification 10
| Part number | 6ES7222-1BH32-1XB0 |
|---|---|
| Type designation | SM 1222, DO 16x 24 V DC/0.5 A Sink |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4034106033408 |
| ETIM class | EC001419 |
| eCl@ss | 27242204 |
Power loss 1
| Power loss, typ. | 2.5 W |
|---|
Digital outputs 17
| Number of digital outputs | 16 |
|---|---|
| in groups of | 1 |
| Current-sinking | Yes |
| Short-circuit protection | No; to be provided externally |
| Limitation of inductive shutdown voltage to Switching capacity of the outputs | Typ 45 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. | L+ minus 0.75 V DC with 10k Load |
| Output voltage: for signal "1", min. | 0,5 V |
| Output current: for signal "1" rated value | 0.5 A |
| Output current: for signal "0" residual current, max. | 75 µA |
| Output delay with resistive load: "0" to "1", max. | 20 µs |
| Output delay with resistive load: "1" to "0", max. | 350 µs |
| Total current of the outputs (per group) horizontal installation: up to 50 °C, max. | 8 A; Current per mass |
| Cable length: shielded, max. | 500 m |
| Cable length: unshielded, max. | 150 m |
Interrupts/diagnostics/status information 2
| Alarms: Diagnostic alarm | Yes |
|---|---|
| Diagnostics indication LED: for status of the outputs | Yes |
Potential separation 2
| Potential separation digital outputs: between the channels, in groups of | 1 |
|---|---|
| Potential separation digital outputs: between the channels and backplane bus | 500 V AC |
Degree and class of protection 1
| IP degree of protection | IP20 |
|---|
Standards, approvals, certificates 8
| 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 |
Ambient conditions 10
| 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 % |
Connection method 1
| required front connector | Yes |
|---|
Mechanics/material 1
| Enclosure material (front): Plastic | Yes |
|---|
Dimensions 3
| Width | 45 mm |
|---|---|
| Height | 100 mm |
| Depth | 75 mm |
Weights 1
| Weight, approx. | 220 g |
|---|
Logistics 6
| Net weight | 0.199 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.699 kg |
| Ships from | Türkiye |
| Dispatch | 16 Nov |
| Stock | Low stock |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7222-1BH32-1XB0
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- CE mark
- CSA approval
- UL approval
- cULus
- FM approval
- RCM (formerly C-TICK)
- KC approval
- Marine approval
Quick answers
Questions about the SM 1222, DO 16x 24 V DC/0.5 A Sink
What is the rated current of SM 1222, DO 16x 24 V DC/0.5 A Sink?
The rated current of SM 1222, DO 16x 24 V DC/0.5 A Sink is 0.5 A.
Which supply voltage is SM 1222, DO 16x 24 V DC/0.5 A Sink rated for?
The rated operational voltage of SM 1222, DO 16x 24 V DC/0.5 A Sink is 24 V AC.
What is the HS code of SM 1222, DO 16x 24 V DC/0.5 A Sink for customs?
The tariff (HS) code on file for SM 1222, DO 16x 24 V DC/0.5 A Sink is 85389091.
What is the EAN of SM 1222, DO 16x 24 V DC/0.5 A Sink?
The EAN (GTIN) of SM 1222, DO 16x 24 V DC/0.5 A Sink is 4034106033408.
Where does SM 1222, DO 16x 24 V DC/0.5 A Sink ship from, and how fast?
SM 1222, DO 16x 24 V DC/0.5 A Sink ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
Guides
Guides for PLC & controllers
What Is a Programmable Logic Controller and How Does It Work
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.
Main Components of a PLC System: Complete Guide for Engineers
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.
Reviews
Customer reviews
Series
Siemens SIMATIC S7-1200
- Brand
- Siemens
- Series
- SIMATIC S7-1200
