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PROFINET Coupler, MQTT

The MQTT protocol has become established in recent years as a simple transmission protocol for messages in the IoT world. MQTT stands for "Message Queue Telemetry Transport Protocol" and is an OASIS standard. The MQTT protocol always uses a central broker for communication between devices, which receives messages from, for example, a sensor and forwards them to interested devices, such as a control unit. When a sensor sends data to the broker, it is called a "publish". If a device needs data, it must subscribe to the broker ("Subscribe"). The broker delivers the data to all subscribers when new data has arrived from the publisher.

With the PN/MQTT Coupler it is possible to transfer values between a PROFINET machine (PLC) and a MQTT broker. It is possible to send values from the PLC via PROFINET to a broker ("Publish") as well as to subscribe values from a MQTT broker and receive them in the PLC via PROFINET ("Subscribe").

The integration into the PLC engineering tool is enabled by a GSDML file, an extra configuration software is not necessary. All settings for the MQTT connection can be done on the web page of the device. MQTT brokers can be connected locally in the own network ("On premise") as well as via the internet in the cloud.

Direct integration into the PLC puts full control of the data exchange with the IoT world in the hands of the programmer.

  • Supports the OASIS MQTT standards V3.1.1 and V5
  • Easy assignment of IO data via GSDML file
  • Up to 100 values can be configured for transmission simultaneously
  • Flexible configuration via web browser
  • Separate networks for PROFINET and MQTT connection
  • Connection to brokers in the local network or directly with the "cloud"
  • Authentication (password, certificate) and encryption (TLS)
  • Supports AWS IoT, Microsoft Azue, HiveMQ, Siemens Mindsphere (in preparation)
  • Very compact design for DIN rail mounting
  • Redundant power supply
  • Galvanic isolation of the networks

PROFINET Coupler, MQTT

General information

  • Order number700-162-3MQ02
  • Article namePN/MQTT Coupler
  • Scope of deliveryPN/MQTT Coupler with power plug
  • Dimensions (DxWxH)32.5 x 58.5 x 76 mm
  • WeightApprox. 135 g

PROFINET interface (X1)

  • Number1
  • Connection2 x RJ45, integrated switch
  • ProtocolPROFINET IO as defined in IEC 61158-6-10
  • Transmission rate100 Mbps full duplex
  • I/O image sizemax. 1024 bytes of input and output data
  • FeaturesMedia redundancy (MRP),
  • automatic addressing,
  • topology detection (LLDP, DCP),
  • diagnosis alarms
  • PROFINET conformance class B

MQTT interface (X2)

  • Number1
  • Connection2x RJ45, integrated switch
  • ProtocolMQTT V3.1.1 & V5
  • Transmission rate10/100 Mbps, full/half duplex

Status indicator

  • Function status9 LEDs
  • Ethernet status8 LEDs

Power supply

  • Operating voltage24 V DC (18 - 28 V DC)
  • Current drawmax. 140 mA
  • Power dissipationmax. 3.4 W

Ambient conditions

  • Ambient temperature0 °C to 60 °C
  • Transport and storage temperature-20 °C to 80 °C
  • Relative air humidity95 % r H without condensation
  • Protection ratingIP 20
  • Mounting positionas desired
  • ApprovalsCE

PROFINET Coupler, MQTT

Technical Documentation
Name Version Size
PN/MQTT Coupler, Quick Start Guide 6 1 MB
PN/MQTT Coupler, Manual 4 4 MB
PN/MQTT Coupler, PROFINET-Certificate   83 KB
Flyers
Name Version Size
Easy connection of fieldbus networks – with Helmholz PROFINET gateways 10-2023 1 MB
Software
Name Version Size
PN/MQTT Coupler, GSDML file 20220402 8 KB
PN/MQTT Coupler, Firmware V1.10.002 14 MB
IPSet 1.04.016 23 MB
Planning Tools
Name Version Size
PN/MQTT Coupler, STEP Files   13 MB
EPLAN Data Portal, Helmholz product macros    

PROFINET Coupler, MQTT

The MQTT protocol has become established in recent years as a simple transmission protocol for messages in the IoT world. MQTT stands for "Message Queue Telemetry Transport Protocol" and is an OASIS standard. The MQTT protocol always uses a central broker for communication between devices, which receives messages from, for example, a sensor and forwards them to interested devices, such as a control unit. When a sensor sends data to the broker, it is called a "publish". If a device needs data, it must subscribe to the broker ("Subscribe"). The broker delivers the data to all subscribers when new data has arrived from the publisher.

With the PN/MQTT Coupler it is possible to transfer values between a PROFINET machine (PLC) and a MQTT broker. It is possible to send values from the PLC via PROFINET to a broker ("Publish") as well as to subscribe values from a MQTT broker and receive them in the PLC via PROFINET ("Subscribe").

The integration into the PLC engineering tool is enabled by a GSDML file, an extra configuration software is not necessary. All settings for the MQTT connection can be done on the web page of the device. MQTT brokers can be connected locally in the own network ("On premise") as well as via the internet in the cloud.

Direct integration into the PLC puts full control of the data exchange with the IoT world in the hands of the programmer.

  • Supports the OASIS MQTT standards V3.1.1 and V5
  • Easy assignment of IO data via GSDML file
  • Up to 100 values can be configured for transmission simultaneously
  • Flexible configuration via web browser
  • Separate networks for PROFINET and MQTT connection
  • Connection to brokers in the local network or directly with the "cloud"
  • Authentication (password, certificate) and encryption (TLS)
  • Supports AWS IoT, Microsoft Azue, HiveMQ, Siemens Mindsphere (in preparation)
  • Very compact design for DIN rail mounting
  • Redundant power supply
  • Galvanic isolation of the networks

PROFINET Coupler, MQTT

General information

  • Order number700-162-3MQ02
  • Article namePN/MQTT Coupler
  • Scope of deliveryPN/MQTT Coupler with power plug
  • Dimensions (DxWxH)32.5 x 58.5 x 76 mm
  • WeightApprox. 135 g

PROFINET interface (X1)

  • Number1
  • Connection2 x RJ45, integrated switch
  • ProtocolPROFINET IO as defined in IEC 61158-6-10
  • Transmission rate100 Mbps full duplex
  • I/O image sizemax. 1024 bytes of input and output data
  • FeaturesMedia redundancy (MRP),
  • automatic addressing,
  • topology detection (LLDP, DCP),
  • diagnosis alarms
  • PROFINET conformance class B

MQTT interface (X2)

  • Number1
  • Connection2x RJ45, integrated switch
  • ProtocolMQTT V3.1.1 & V5
  • Transmission rate10/100 Mbps, full/half duplex

Status indicator

  • Function status9 LEDs
  • Ethernet status8 LEDs

Power supply

  • Operating voltage24 V DC (18 - 28 V DC)
  • Current drawmax. 140 mA
  • Power dissipationmax. 3.4 W

Ambient conditions

  • Ambient temperature0 °C to 60 °C
  • Transport and storage temperature-20 °C to 80 °C
  • Relative air humidity95 % r H without condensation
  • Protection ratingIP 20
  • Mounting positionas desired
  • ApprovalsCE

PROFINET Coupler, MQTT

Technical Documentation
Name Version Size
PN/MQTT Coupler, Quick Start Guide 6 1 MB
PN/MQTT Coupler, Manual 4 4 MB
PN/MQTT Coupler, PROFINET-Certificate   83 KB
Flyers
Name Version Size
Easy connection of fieldbus networks – with Helmholz PROFINET gateways 10-2023 1 MB
Software
Name Version Size
PN/MQTT Coupler, GSDML file 20220402 8 KB
PN/MQTT Coupler, Firmware V1.10.002 14 MB
IPSet 1.04.016 23 MB
Planning Tools
Name Version Size
PN/MQTT Coupler, STEP Files   13 MB
EPLAN Data Portal, Helmholz product macros