Programmable Logic Controller Guide: Selection, Application, and Maintenance for Engineers
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- Part number
- 6ES7278-4BD32-0XB0
- Model no
- SM 1278 4xIO-Link master
SIMATIC S7-1200Siemens 6ES7278-4BD32-0XB0 SIMATIC S7-1200 SM 1278 4xIO-Link Master PLC I/O Module
SIMATIC S7-1200 SM 1278: 4x IO-Link master ports, 24V DC, IP20, 45x100x75mm signal module.
Description
About the SM 1278 4xIO-Link master
About the SM 1278 4xIO-Link master
The Siemens 6ES7278-4BD32-0XB0 is a SIMATIC S7-1200 SM 1278 signal module with 4 IO-Link master ports, letting the CPU exchange configuration and diagnostic data with IO-Link sensors and actuators over the same backplane slot used by a standard digital I/O module. It runs from 20.4 to 28.8 V DC, draws 1 W typical, and is rated IP20.
Certifications & Standards
- CE
- CSA
- UL
- cULus
- FM
- RCM
- KC
- Marine
Selection Notes
Each of the 4 master ports on this module can be parameterized as an IO-Link port or fall back to standard digital I/O, so it fits either a full IO-Link sensor network or a mixed installation where only some devices support the protocol. Because it occupies one signal-module slot (45 mm wide) on the S7-1200 backplane, it replaces a standard SM without needing a separate CM communication slot, which matters on a compact CPU that supports only 6 module slots total. The 1 W typical power loss and IP20 rating keep it within the same panel-space and enclosure requirements as any other S7-1200 signal module, so no extra cooling or enclosure changes are needed when adding it to an existing rack.
Specification
Full specification
General information 1
| Product type designation | SM 1278 4xIO-Link master |
|---|
Supply voltage 3
| Rated value (DC) | 24 V |
|---|---|
| permissible range, lower limit (DC) | 20.4 V |
| permissible range, upper limit (DC) | 28.8 V |
Power loss 1
| Power loss, typ. | 1 W |
|---|
Show all 49 specifications ↓ Show less ↑44 more values in Identification, Interrupts/diagnostics/status information, Degree and class of protection, Standards, approvals, certificates, Ambient conditions, Connection method, Mechanics/material, Dimensions, Weights, General Product Approval, Logistics.
Identification 10
| Part number | 6ES7278-4BD32-0XB0 |
|---|---|
| Type designation | SM 1278 4xIO-Link master |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515082088 |
| ETIM class | EC001423 |
| eCl@ss | 27242208 |
Interrupts/diagnostics/status information 1
| Diagnostics function | Yes |
|---|
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 11
| 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 % |
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. | 150 g |
|---|
General Product Approval 1
| Miscellaneous Manufacturer Declara- | tion |
|---|
Logistics 6
| Net weight | 0.202 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.702 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7278-4BD32-0XB0
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 1278 4xIO-Link master
Which supply voltage is SM 1278 4xIO-Link master rated for?
The rated operational voltage of SM 1278 4xIO-Link master is 24 V AC.
What is the HS code of SM 1278 4xIO-Link master for customs?
The tariff (HS) code on file for SM 1278 4xIO-Link master is 85176200.
What is the EAN of SM 1278 4xIO-Link master?
The EAN (GTIN) of SM 1278 4xIO-Link master is 4025515082088.
Where does SM 1278 4xIO-Link master ship from, and how fast?
SM 1278 4xIO-Link master ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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Reviews
Customer reviews
Series
Siemens SIMATIC S7-1200
- Brand
- Siemens
- Series
- SIMATIC S7-1200
