Modbus to PROFINET Protocol Converter BL122
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter

Modbus to PROFINET Protocol Converter BL122

No.BL122
The BL122 protocol converter is an industrial Ethernet gateway with Ethernet ports and RS-232/485 serial ports. Beilai BL122 protocol converter is used for converting Modbus RTU, Modbus TCP to PROFINET communications. 
Downlink Protocol
Modbus RTU, Modbus TCP
Uplink Protocol
PROFINET
Ethernet Port
3 x RJ45, 3x10/100Mbps
Serial Port
2CH RS485/RS232, 1CH RS232
Description
The Modbus to PROFINET gateway BL122 is an industrial protocol conversion device designed to achieve seamless communication between the Modbus protocol (including Modbus RTUand Modbus TCP) and the PROFINET protocol. In the field of industrial automation, it can easily convert sensor and device data into PROFINET protocol and connect to PLC.

Key Features

Multi-Protocol Integration

  • Downlink Support: Modbus RTU/TCP (1 x RS232 + 2 x RS485)
  • Uplink Support: PROFINET (Dual RJ45 ports, supports cascading)
  • Full Function Code Compatibility: 01H/02H/03H/04H/05H/06H/0FH/10H

Simplified Configuration

  • Web-based Visual Configuration: Log in via browser to 192.168.3.10 (default IP), username "admin," no password required.
  • PLC Managed IP: Supports dynamic IP assignment for network ports via PLC.

Industrial-Grade Performance

  • Data Transfer: Max input/output 496 bytes each, total data 496 bytes.
  • Communication Capability: Single serial port supports 31 slave devices; multiple interfaces support concurrent data acquisition.
  • Environmental Adaptability: Wide operating temperature of -30~55℃, IP30 protection, DIN rail mounting.

Reliable Assurance

  • Safety Certifications: CE/FCC/RoHS; EMC compliant with IEC 61000-4-2/4/5 Level 3.
  • Dual Watchdog Mechanism: Power (PWR) + Run (RUN) dual indicator lights for real-time status monitoring.

Typical Applications

Equipment networking: connect Modbus sensors, frequency converters (VFDs), and actuators to PROFINET production lines
PLC expansion: connect Siemens S7-200 SMART/S7-1200 PLCs to collect Modbus device data
Energy monitoring: integrated electric meter/UPS, real-time reading of three-phase voltage, current, and power parameters


Technical Specifications

Parameter

Description

Power Supply

Input Voltage

DC 12~36V

Power Consumption

Normal: 192mA@12V, Max: 74mA@36V

Ethernet Port

Specification

3 x RJ45, 3x10/100Mbps

Protection

ESD: ±6kV(Contact), ±8kV(Air)

EFT: 1kV, 5kHz

Cascading

Support

Serial Port 

QTY

2CH RS485/RS232, 1CH RS232

Baud Rate

2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400

Data Bit

8

Parity Bit

None, Even, Odd

Stop Bit

1, 2

Mode

RTU Master/Slave, TCP Master/Slave

Function

01H, 02H, 03H, 04H, 05H, 06H, 0FH, 10H

Connection

Up to 31 connections to a single serial port

Protection

ESD ±6kV(Contact), ±8kV(Air)

EFT ±1kV, 5kHz

Indicator

PWR

Always on when device powered on

RUN

Flickering when system running

LINK

Flickering when TCP communicating

485A

Flickering when communicating

RS232

Flickering when communicating

Software

Protocol

PROFINET, Modbus

Max input/output data volume 

Input Bytes + Output Bytes ≤496 Bytes

Max Input Bytes ≤496Bytes

Max Output Bytes ≤496Bytes

File

GSDML

Safety Regulations

EMC

IEC 61000-4-2 (ESD) Level 3

IEC 61000-4-4 (EFT) Level 3

IEC 61000-4-5 (Surge)Level 3

Others

CE, FCC, RoHs

Environment

Working

-30~55℃, 5~95% RH

Others

Housing Material

Plastic

Size

30×83×110mm(LxWxH)

Protection

IP30

Mounting

DIN Rail Mounting

Speed 150Mbps (Max)
Distance Unobstructed/open outdoor coverage up to 20 meters
SSID broadcast switch Support
Indicator PWR Always on when device powered on 
RUN Flickering when system running
Off when system shutdown
LINK Flickering when Ethernet communication; Always on when 4G or WiFi communication; OFF when Ethernet, 4G, WiFi are all disconnected.
Software Internet Protocol IPV4, TCP/UDP, DHCP, DNS, etc
IP Retrieving Static IP/DHCP
Transparent Transmission Support
DNS Support Domain Name resolution
Configuration PC software configuration, support WIN 7, WIN 8, WIN 10 and WIN11
Network Cache Transmitting: 8Kbyte; Receiving: 8Kbyte
Safety Regulations EMC CE, FCC
EMS IEC 61000-4-2 (ESD) Level 3
IEC 61000-4-4 (EFT) Level 3
IEC 61000-4-5 (Surge)Level 3
Vibration IEC60068-2-6
Environment Working -40~85℃, 5~95% RH
Storage -40~85℃,5~95% RH
Others Housing Material Plastic
Size 40×83×110mm/30×83×110mm (LxWxH)
Protection  IP30
Net Weight 171g/133g
Mounting DIN Rail Mounting/Wall-mounting

Shipping Packaging
  • Industrial-grade Gateway x1
  • DIN35 mounting bracket x1
  • Connection Terminalsx1
  • Certificate of conformity x1
  • Warranty card x1
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter
  • Modbus to PROFINET Converter

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