Editorial Technical Reference

Communication Protocol Board

This page explains how Communication Protocol Board is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Electronic circuit board that manages data exchange protocols within flow control systems

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Product Specifications

Technical details and manufacturing context for Communication Protocol Board

Definition
A specialized printed circuit board that serves as the communication hub within Flow Control Interface systems, responsible for implementing and managing data exchange protocols between sensors, actuators, controllers, and supervisory systems to ensure reliable and standardized information flow in industrial automation environments. The board is designed for integration into flow control systems, where it facilitates communication among various components. It operates on a 24 V DC supply (IEC 61131-2) and consumes between 5 and 15 W depending on active ports. The listed operating temperature range is -40 to 85 °C and the listed storage temperature range is -40 to 105 °C; both must be confirmed for the specific board. IEC 60068-2-1 and IEC 60068-2-2 are cold and dry-heat test methods and do not establish these ranges. The listed non-condensing humidity tolerance is 5–95% RH, with IEC 60068-2-78 retained as a verification reference. Ingress protection ranges from IP20 to IP65 (IEC 60529), with IP65 for field-mounted units. Communication protocols are selectable via DIP switches and include Modbus RTU, Profibus DP, and CANopen (IEC 61158), supporting data rates from 9.6 to 12000 kbit/s. The board offers 2 to 8 configurable channels, isolation voltage of 1500 V DC between field and logic sides (IEC 61010-1), and EMC compliance per EN 61000-6-2 and EN 61000-6-4. Dimensions are 120×80×35 mm (DIN rail mountable), weight 250–350 g depending on connectors, and MTBF of 100,000 hours at 40 °C ambient (IEC 61709). Materials include FR-4 PCB substrate, copper traces, surface-mount components, solder mask, and silicon-based integrated circuits. This directory entry provides reference values; verify model-specific specifications and standards with the legal manufacturer or supplier.
Working Principle
The board receives electrical signals from various flow control components, processes them according to predefined communication protocols (such as Modbus, Profibus, or Ethernet/IP), converts data formats as needed, and transmits processed information to other system components while ensuring data integrity, timing synchronization, and error checking through embedded microcontrollers and protocol-specific hardware interfaces. It acts as a translator and router for data, enabling different devices to communicate seamlessly. The board's microcontrollers execute protocol stacks, manage data buffers, and handle error detection. Hardware interfaces provide physical layer connectivity, while isolation barriers protect logic circuits from field-side transients. The board also manages timing to synchronize data exchange, ensuring that information is delivered accurately and on schedule. This principle supports reliable operation in industrial environments where electromagnetic interference and harsh conditions are common.
Common Materials
FR-4 PCB substrate, Copper traces, Surface-mount electronic components, Solder mask, Silicon-based integrated circuits
Technical Parameters
ParameterTypical rangeNotes & selection driver
Operating Voltage24 ±10% V DCStandard for industrial control systemsIEC 61131-2
Power Consumption5–15 WDepends on number of active ports
Operating Temperature-40–85 °CExtended range for industrial environments
Storage Temperature-40–105 °CNon-operating condition
Humidity (Non-condensing)5–95 % RHNo condensation allowedIEC 60068-2-78
Ingress ProtectionIP20–IP65IP65 for field-mounted unitsIEC 60529
Communication ProtocolsModbus RTU, Profibus DP, CANopenSelectable via DIP switchesIEC 61158
Data Rate9.6–12000 kbit/sProtocol dependentIEC 61158
Number of Channels2–8Configurable per protocol
Isolation Voltage1500 V DCBetween field and logic sideIEC 61010-1
EMC ComplianceEN 61000-6-2, EN 61000-6-4Industrial immunity and emissionEN 61000-6-2, EN 61000-6-4
Dimensions (L×W×H)120×80×35 mmDIN rail mountable
Weight250–350 gDepends on connector options
MTBF100000 hAt 40°C ambientIEC 61709

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Microcontroller Unit
    Processes communication protocols and manages data flow between interfaces
    Material: Silicon semiconductor
  • Communication Interface Chips Part
    Convert electrical signals between different protocol standards and physical layers
    Material: Silicon semiconductor with specialized I/O circuits
  • PCB Connectors Part
    Provide physical connection points for cables to other system components
    Material: Gold-plated copper alloy
  • Voltage Regulator
    Stabilizes input power to required levels for board components
    Material: Silicon semiconductor with passive components
  • EEPROM Memory Part
    Stores configuration parameters and protocol settings
    Material: Silicon-based non-volatile memory
  • Isolation Barriers
    Keep field-side transients off the logic side of the board.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Flow Control Interface
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 10 bar
flow rate: 0 to 1000 L/min
temperature: -40°C to +85°C
slurry concentration: 0 to 30% solids by weight
Media Compatibility
✓ Clean water systems ✓ Oil and gas pipelines ✓ Chemical processing plants
Unsuitable: High-vibration environments without proper mounting
Sizing Data Required
  • Required data throughput (Mbps)
  • Number of connected devices/nodes
  • Communication protocol type (e.g., Modbus, Profibus, Ethernet/IP)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Signal Degradation
Cause: Electromagnetic interference (EMI) from nearby equipment or poor shielding, leading to corrupted data transmission and communication errors.
Component Overheating
Cause: Inadequate ventilation, dust accumulation, or excessive ambient temperature causing thermal stress on ICs, capacitors, or power regulators, potentially leading to solder joint failure or semiconductor damage.
Maintenance Indicators
  • Intermittent or complete loss of communication signals, indicated by error logs, alarm indicators, or system downtime.
  • Audible buzzing or humming from the board, or visual signs like discolored components, bulging capacitors, or a burning smell.
Engineering Tips
  • Implement regular preventive maintenance: clean dust from boards and enclosures, verify cooling system operation, and use thermal imaging to detect hot spots before failure.
  • Ensure proper installation and environment: use shielded cables, maintain adequate clearance from high-power equipment, and control ambient temperature and humidity within manufacturer specifications.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 61131-2:2017 - Programmable controllers - Part 2: Equipment requirements and tests CE Marking - Conformité Européenne for EMC and LVD Directives

Quoted from the published standard.

Manufacturing Precision
  • PCB Trace Width Tolerance: +/-10%
  • Component Placement Accuracy: +/-0.1mm
Quality Inspection
  • In-Circuit Test (ICT) for electrical continuity and component verification
  • Environmental Stress Screening (ESS) including thermal cycling and vibration testing

Manufacturers of Communication Protocol Board

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Frequently Asked Questions

What communication protocols does the board support?

The board supports Modbus RTU, Profibus DP, and CANopen, selectable via DIP switches. These protocols are referenced to IEC 61158. The actual protocol availability may vary by model; confirm with the manufacturer.

What are the operating temperature limits?

The listed operating temperature range is -40 to 85 °C and the listed storage temperature range is -40 to 105 °C; both must be confirmed for the specific board. IEC 60068-2-1 and IEC 60068-2-2 are cold and dry-heat test methods and do not establish these ranges. Keep the installation environment within the manufacturer-confirmed limits.

Is the board suitable for outdoor or harsh environments?

The board has an ingress protection rating from IP20 to IP65 (IEC 60529), with IP65 for field-mounted units. This indicates protection against dust and water jets, but the actual rating depends on the enclosure and installation. Verify with the supplier.

What is the isolation voltage between field and logic sides?

The isolation voltage is 1500 V DC between field and logic sides, per IEC 61010-1. This helps protect logic circuits from voltage transients on the field side. Confirm the exact isolation rating for your model.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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