Phoenix Contact 2736372 (FLS PB M12 DIO 8/8 M12) Field Distributed I/O Module
Order No. 2736372 corresponds to the PROFIBUS DP distributed I/O module of Phoenix Contact Fieldline series. The official full model is FLS PB M12 DIO 8/8 M12.
It features 8 digital inputs + 8 digital outputs, full M12 interface design, IP67 protection rating, and 500mA per channel output.
Suitable for signal acquisition and control in harsh industrial field environments, it supports PROFIBUS DP bus communication and can be installed directly near equipment without a control cabinet.
- Model Segment Definition (Revised)
| Segment | Standard Code | Meaning | Detailed Description |
| PLS | FLS | Fieldline Series | Phoenix Contact field-level distributed I/O product line; standalone design without base required |
| PB | PB | PROFIBUS DP Protocol | Compliant with EN 50170; supports automatic baud rate detection from 9.6 kbps to 12 Mbps |
| M12 | M12 | Bus Interface Type | 2 × M12 B-coded 5-pin connectors; supports bus topology with input/output ports |
| DIO8-8 | DIO 8/8 | Digital Channel Configuration | 8 digital inputs + 8 digital outputs; total 16 channels with independent channel protection |
| M12 | M12 | Power / I/O Interface | Both power and I/O adopt M12 A-coded connectors; vibration-proof, dust and moisture resistant |
| 2736372 | 2736372 | Global Unique Order Number | Official Phoenix Contact product ID for purchasing and after-sales tracking |
| PHOENIX | Phoenix Contact | Brand | Phoenix Contact Germany, global leader in industrial connection and automation |
- Core Specification Parameters (Official Authoritative Data)
| Category | Parameter | Value | Remarks |
| Basic Characteristics | Product Type | Distributed I/O Device | Standalone design, no extra base required; direct field mounting |
| Protection Class | IP67 | Dust-tight and water-proof; usable outdoors, in humid and dusty environments | |
| Mounting Type | Panel / Wall Mount | Mounting hole spacing: 168 mm; dimensions: 60×178×49.3 mm; weight: 340 g (without package) | |
| Operating Temperature | -25°C ~ +60°C | Adaptable to industrial temperature fluctuation; storage temperature: -40°C ~ +85°C | |
| Certifications | CE, UL, RoHS, REACH | Compliant with EU and North American safety & environmental standards | |
| Communication Interface | Protocol | PROFIBUS DP | Slave station; supports Class 1 and Class 2 master communication |
| Address Setting | DIP Switch 1~99 | 5-bit DIP switch for intuitive station address setting; no software configuration needed | |
| Bus Connection | 2 × M12 B-coded 5-pin | Supports daisy-chain bus topology for easy expansion | |
| Digital Input | Quantity / Type | 8-ch / IEC 61131-2 Type 1 | PNP type; compatible with NPN with external circuit |
| Voltage Range | 24V DC (18V~30V) | Logic 0: -30V~5V; Logic 1: 13V~30V | |
| Total Current | Max. 600mA | Reverse polarity protection and overcurrent protection | |
| Filter Time | 3 ms | Suppresses electromagnetic interference and improves signal stability | |
| Digital Output | Quantity / Type | 8-ch / PNP Normally Open | Independent short-circuit and overload protection per channel |
| Output Voltage | 24V DC | Consistent with supply voltage, varies with load | |
| Per-channel Current | Max. 500mA | Total output current limit: 4A (U_A11+U_A12) | |
| Connection Type | M12 Dual Occupancy Connector | Supports 2/3/4-wire sensor / actuator connection | |
| Power Supply System | Module Supply (U_L) | 24V DC (18V~30V) | M12 A-coded 4-pin; max. 4A, short-circuit / overload protection |
| Sensor Supply (U_S) | 24V DC | Max. 4A for input-side sensors | |
| Actuator Supply (U_A11/U_A12) | 24V DC | Max. 4A per path; independent power supply for output actuators | |
| Electrical Isolation | Isolation Voltage | 500V AC | Electrical isolation between module and I/O, and between I/O channels |
| Physical Properties | Material | Polycarbonate (PC) | Impact-resistant, chemical corrosion-resistant; meets UL 94 V-0 flame retardant standard |
| Origin | Germany (DE) | Original imported, guaranteed quality |
- Accessory List (Officially Recommended)
| Accessory Name | Order No. | Function Description | Suggested Qty |
| PROT-M12 | 1680539 | M12 connector protective plug; prevents dust and moisture into unused ports | 2~4 pcs per module |
| ZBF 12:UNBEDRUCKT | 809735 | Blank marking tag for channel identification | 1 pc per module |
| SAC-2P-M12MSB/2.0-910 | 1507243 | PROFIBUS bus cable, 2m, M12 male-to-male | 1 pc per bus segment |
| SAC-4P-M12MS/2.0-186 | 1509445 | Sensor/actuator cable, 2m, M12 male to bare wire | 1 pc per channel |
| SAC-M12T/2XM12 PB DP | 1507780 | M12 T-connector for bus branching | 1 pc per branch |
| SAC-5P-M12MS PB TR | 1507803 | Terminating resistor for PROFIBUS bus end matching | 1 pc each at bus head & tail |
| FLS-MOUNT | 2736000 | Mounting bracket for rail or wall installation | 1 pc per module |
- Alternative & Cross-Brand Compatibility List
| Brand | Model | Key Parameters | Compatibility / Difference | Replacement Recommendation |
| Phoenix Same Series | FLS PB M12 DIO8/8-2A (2736108) | 8DI/8DO, PROFIBUS DP, IP67, 2A/channel output | Higher output current; other parameters identical | Preferred for driving solenoid valves and small motors |
| Siemens | ET 200pro DP DI8/DO8 24V DC | 8DI/8DO, PROFIBUS DP, IP67 | Different interface (Fast Connect); functionally compatible | Suitable for integration with Siemens PLC systems |
| Weidmüller | UR20-FBC-PB-DIO8/8 | 8DI/8DO, PROFIBUS DP, IP67 | Similar connection technology; more cost-effective | Consider for cost optimization |
| Schneider | Modicon M221 DIO Expansion Module | 8DI/8DO, PROFIBUS DP, IP65 | Slightly lower protection rating; same communication protocol | Alternative for non-harsh environments |
| Pepperl+Fuchs | VBG-PB-8DI8DO | 8DI/8DO, PROFIBUS DP, IP67 | Richer diagnostic functions; higher price | Choose if advanced diagnosis is required |
- Selection Guidelines & Alternative Solutions
Selection Formula
> PB bus 8-in 8-out, M12 interface IP67, 500mA per channel, 24V three independent power supplies
Key Selection Considerations
- Load Capacity Matching
Standard load (<500mA): Choose 2736372 (500mA/channel)
Heavy load (500mA~2A): Upgrade to 2736108 (2A/channel)
Ultra-heavy load (>2A): Adopt FLS PB M12 DO8 M12-4A or external relay
- Communication Protocol Adaptation
PROFIBUS DP: 2736372 (standard)
PROFINET: Choose FLM series (e.g. 2736848)
DeviceNet: Choose FLS DN series (e.g. 2736482)
- Channel Configuration Selection
Input only: FLS PB M12 DI8 M12 (2736123)
Output only: FLS PB M12 DO8 M12 (2736109)
4-in 4-out: FLS PB M12 DIO4/4 M12 (2736371)
- Power Supply Design
Shared power for sensors & actuators: Share U_S and U_A11/U_A12
Isolated power: Independent supply for U_S (sensor) and U_A11/U_A12 (actuator) to improve anti-interference performance
- Installation Environment Evaluation
IP67: 2736372 (standard) for outdoor, humid and dusty sites
Extreme temperature: Select wide-temperature model for -40°C~+70°C
Strong electromagnetic interference: Use shielded cables and enhanced grounding
Recommended Alternative Solutions
| Application Scenario | Recommended Solution | Advantages |
| Cost Optimization | Domestic alternative PROFIBUS distributed I/O (Inovance, Xinjie) | 30%-50% price reduction, fully compatible functions |
| Protocol Upgrade | Phoenix Contact FLM series (PROFINET) | Supports Industry 4.0, higher communication speed (100Mbps) |
| Function Expansion | FLS PB M12 AI4/AO2 (Analog) | Add 4AI+2AO to meet mixed signal requirements |
- Air Freight Compliance & CE Certification
- Air Freight Compliance Judgment
No built-in lithium battery / super capacitor: Ordinary industrial electronic device, no special air freight restrictions
Transport Class: Class 9 miscellaneous dangerous goods (non-dangerous in practice)
HS Code: 85389099 (Other electrical control equipment)
Packaging Standard: Compliant with ISTA 3A to prevent transport damage
- CE Certification Information
Compliant Directives: 2014/30/EU (EMC), 2011/65/EU (RoHS)
Test Standards: EN 50170 (PROFIBUS), EN 61131-2 (I/O performance)
Certification No.: Available on Phoenix official website by entering Order No. 2736372
- Application Cases & Industry Adaptation
Typical Application Cases
- Automotive Manufacturing: I/O expansion for welding robot stations; connects proximity switches and cylinder solenoid valves; IP67 resists welding spatter and oil contamination
- Logistics & Warehousing: AGV signal acquisition and control; M12 vibration-resistant interface; distributed structure reduces wiring
- Food & Beverage: Filling production lines; IP67 suitable for flushing & disinfection; independent power avoids interference
- Water Treatment: Pump station on-site control; connects liquid level switches and water pump contactors; outdoor installation without control cabinet
Industry Adaptation Guide
| Industry | Adaptation Advantages | Recommended Configuration |
| Automotive Manufacturing | Oil-resistant, vibration-resistant, IP67 protection | 2736372 + SAC-4P-M12MS cable + terminating resistor |
| Logistics & Warehousing | Fast installation, flexible bus expansion | 2736372 + T-connector + protective plug |
| Food & Beverage | Washdown resistant, corrosion resistant | 2736372 + stainless steel mounting bracket |
| Water Treatment | Outdoor rated, moisture-proof | 2736372 + waterproof connector + sunshade cover |
Phoenix Contact 2736372 (FLS PB M12 DIO 8/8 M12) is a high-reliability, high-flexibility field distributed I/O module.
With IP67 protection and full M12 interface design, it perfectly adapts to harsh industrial environments.
Via PROFIBUS DP bus, it can be seamlessly integrated into mainstream PLC systems to realize efficient distributed signal acquisition and control.
Its independent power design and 500mA per-channel output capability meet most industrial automation application requirements.
Complete Model List of Phoenix Contact Fieldline Series Field Distributed I/O Modules
Phoenix Contact Fieldline series (FLS/FLM/FLC) are IP67-rated field distributed I/O products designed for harsh industrial environments.
Supports multiple industrial communication protocols with full M12/M8 interface design; can be installed directly on equipment without control cabinets.
Below is the complete model list classified by communication protocol, including order numbers, core parameters and application scenarios.
- PROFIBUS DP Series (FLS PB)
Key Features: Compliant with EN 50170; automatic baud rate 9.6 kbps~12 Mbps; 5-bit DIP switch for station address 1~99; IP67 protection, M12 interface.
| Official Model | Order No. | Channel Configuration | Output Current | Special Features | Application |
| FLS PB M12 DI 8 M12 | 2736123 | 8DI | — | PNP input, 3ms filter | Signal acquisition, sensor connection |
| FLS PB M12 DI 16 M12 | 2736220 | 16DI | — | Total current 1.2A, reverse polarity protection | High-density signal acquisition |
| FLS PB M12 DO 8 M12 | 2736109 | 8DO | 500mA/ch | PNP normally open, short-circuit protection | Small actuator control |
| FLS PB M12 DO 8 M12-2A | 2736110 | 8DO | 2A/ch | Heavy-duty output, overload protection | Solenoid valves, small motors |
| FLS PB M12 DIO 4/4 M12 | 2736371 | 4DI+4DO | 500mA/ch | Mixed I/O, independent protection | Small equipment control |
| FLS PB M12 DIO 4/4 M12-2A | 2736107 | 4DI+4DO | 2A/ch | Heavy-duty mixed, high reliability | Medium equipment control |
| FLS PB M12 DIO 8/8 M12 | 2736372 | 8DI+8DO | 500mA/ch | Standard mixed, IP67 | General industrial control |
| FLS PB M12 DIO 8/8 M12-2A | 2736108 | 8DI+8DO | 2A/ch | Heavy-duty mixed, high protection | Automotive, logistics |
| FLS PB M12 AI 4 M12 | 2736125 | 4AI (0-10V/4-20mA) | — | 12-bit resolution, channel isolation | Analog signal acquisition |
| FLS PB M12 AO 2 M12 | 2736126 | 2AO (0-10V/4-20mA) | — | 12-bit resolution, short-circuit protection | Analog control |
- PROFINET Series (FLM)
Key Features: Supports PROFINET RT/IRT; 500kbaud/2Mbaud optional; channel diagnosis; local bus expandable up to 16 devices.
| Official Model | Order No. | Channel Configuration | Interface Type | Special Features | Application |
| FLM DI 8 M12 | 2736288 | 8DI | M12 | 3ms filter, total 600mA | Standard signal acquisition |
| FLM DI 8 M8 | 2773348 | 8DI | M8 | Space-saving, close-range installation | Compact equipment, dense sensors |
| FLM DO 8 M12 | 2736289 | 8DO | M12 | 500mA/ch, diagnostic function | Standard actuator control |
| FLM DO 8 M8 | 2773349 | 8DO | M8 | 500mA/ch, compact M8 design | Small actuators, space-limited |
| FLM DIO 4/4 M8 | 2773350 | 4DI+4DO | M8 | Mixed I/O, M8 interface | Small equipment mixed control |
| FLM DIO 8/4 M8 | 2773351 | 8DI+4DO | M8 | Input-intensive, M8 design | Dense sensor applications |
| FLM DIO 8/8 M12 | 2736848 | 8DI+8DO | M12 | 8-ch mixed, diagnosis | General industrial control |
| FLM DIO 16/16 M12/8-DIAG | 2736738 | 16DI+16DO | M12 | High density, 8-bit diagnosis | Large production line control |
| FLM AI 4 M12 | 2736290 | 4AI | M12 | 12-bit resolution, channel isolation | Analog acquisition |
| FLM AO 2 M12 | 2736291 | 2AO | M12 | 12-bit resolution, short-circuit protection | Analog control |
| FLM BK ETH M12 DI 8 M12-2TX | 2736916 | 8DI + Ethernet Gateway | M12 | 2 Ethernet ports, Modbus/TCP | Network expansion, protocol conversion |
- CANopen Series (FLS CO)
Key Features: Compliant with CANopen DS 301/302; supports CiA 401 I/O profile; M12 interface, IP67 protection.
| Official Model | Order No. | Channel Configuration | Output Current | Special Features | Application |
| FLS CO M12 DI 8 M12 | 2736079 | 8DI | — | PNP input, 3ms filter | Signal acquisition |
| FLS CO M12 DO 8 M12 | 2736083 | 8DO | 500mA/ch | PNP normally open, short-circuit protection | Actuator control |
| FLS CO M12 DO 8 M12-2A | 2736084 | 8DO | 2A/ch | Heavy-duty output | Heavy equipment control |
| FLS CO M12 DIO 8/8 M12 | 2736085 | 8DI+8DO | 500mA/ch | Mixed I/O | General control |
| FLS CO M12 DIO 8/8 M12-2A | 2736086 | 8DI+8DO | 2A/ch | Heavy-duty mixed | Automotive manufacturing |
| FLS CO M12 AI 4 M12 | 2736087 | 4AI | — | 12-bit resolution | Analog acquisition |
| FLS CO M12 AO 2 M12 | 2736088 | 2AO | — | 12-bit resolution | Analog control |
- DeviceNet Series (FLS DN)
Key Features: Compliant with DeviceNet standard; supports CIP protocol; M12 interface, IP67; suitable for North American market and automotive industry.
| Official Model | Order No. | Channel Configuration | Output Current | Special Features | Application |
| FLS DN M12 DI 8 M12 | 2736481 | 8DI | — | PNP input, 3ms filter | Signal acquisition |
| FLS DN M12 DO 8 M12 | 2736483 | 8DO | 500mA/ch | PNP normally open, short-circuit protection | Actuator control |
| FLS DN M12 DIO 8/8 M12 | 2736482 | 8DI+8DO | 500mA/ch | Mixed I/O | General control |
| FLS DN M12 AI 4 M12 | 2736484 | 4AI | — | 12-bit resolution | Analog acquisition |
| FLS DN M12 AO 2 M12 | 2736485 | 2AO | — | 12-bit resolution | Analog control |
- Basic Series (Non-protocol, Local Bus)
Key Features: Connectable to main module via Fieldline local bus; M8/M12 interface, IP67; for distributed expansion.
| Official Model | Order No. | Channel Configuration | Interface Type | Special Features | Application |
| FLM DI 8 M8 | 2773348 | 8DI | M8 | Space-saving | Close-range installation |
| FLM DO 8 M8 | 2773349 | 8DO | M8 | 500mA/ch | Small actuators |
| FLM DIO 4/4 M8 | 2773350 | 4DI+4DO | M8 | Mixed I/O | Small equipment |
| FLM DIO 8/4 M8 | 2773351 | 8DI+4DO | M8 | Input-intensive | Dense sensor applications |
- Model Naming Rule
FLS/FLM/FLC [Protocol] [Interface] [ChannelType][Quantity] [OutputCurrent] [Interface]
| Field | Meaning | Example |
| FLS | Integrated field I/O module (standalone) | FLS PB M12 DIO 8/8 M12 |
| FLM | Modular field I/O module (expandable) | FLM DIO 8/8 M12 |
| FLC | Compact field I/O module (space limited) | FLC PB M12 DI 8 M12 |
| Protocol | PB=PROFIBUS, CO=CANopen, DN=DeviceNet | PB = PROFIBUS DP |
| Interface | M12 / M8 | M12 = Standard industrial interface |
| Channel Type | DI=Digital Input, DO=Digital Output, DIO=Mixed, AI=Analog Input, AO=Analog Output | DIO8/8 = 8DI+8DO |
| Output Current | No mark = 500mA; -2A = 2A per channel | -2A = 2A per channel output |
- Quick Selection Guide
- Protocol Selection
Siemens PLC system: Prefer FLS PB series
Ethernet architecture: Prefer FLM PROFINET series
Automotive industry: FLS CO (CANopen) or FLS DN (DeviceNet)
- Channel Configuration
Only signal input: Choose DI series
Only actuator control: Choose DO series; heavy load select -2A model
Mixed I/O demand: Choose DIO series (4/4 or 8/8)
- Interface Selection
Standard industrial environment: M12 (vibration/dust-proof)
Space limited: M8 compact interface
- Special Requirements
Analog signal: Choose AI/AO series
Diagnostic function: Choose FLM series (marked DIAG)
- Accessory & Spare Parts List
| Accessory Name | Order No. | Function |
| FLS-MOUNT Mounting Bracket | 2736000 | Rail / wall mounting |
| PROT-M12 Protective Plug | 1680539 | Protect unused ports |
| ZBF 12 Blank Marking Tag | 809735 | Channel labeling |
| SAC-2P-M12MSB/2.0-910 Bus Cable | 1507243 | PROFIBUS bus connection |
| SAC-4P-M12MS/2.0-186 Sensor Cable | 1509445 | I/O device connection |
| SAC-M12T/2XM12 PB DP T-Connector | 1507780 | Bus branching |
| SAC-5P-M12MS PB TR Terminating Resistor | 1507803 | Bus end termination |
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