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How to

How to


Products: Commission, RP-C
Functionalities: Engineering, Modbus
Product version: 2023, 2024, 7.0
3/20/2025

Viewing the Communication Status of Modbus Devices Using the Commission Mobile Application

When Modbus is configured on a BACnet/IP controller, you can view the communication status of Modbus devices in the Commission mobile application.

Important:

Modbus device status information is not available in the Commission mobile application unless you first configure the BACnet/IP controller to include Modbus. You can do so either directly from WorkStation or from an application image which has been downloaded to the controller.

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In the MP and RP controller, you create a Modbus device in order to connect one or more Modbus RTU slave devices to the Connected Room Solution. RTU or Remote Terminal Unit is the method of message transmission over a Modbus serial network.

RTU is a binary format that requires the least number of characters for data transmission and is the fastest available transmission mode. Be sure to configure all devices on the same network to use the same transmission mode.

The device you create is a representation of any physical Modbus device in a serial network. All devices use the same device icon and are created in the same way, regardless of network type.

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You download an Image file to a BACnet/IP controller to download pre-engineered objects to a controller.

To download an Image to a BACnet/IP controller

  1. In the Commission mobile application, connect to the BACnet/IP controller.

  2. On the tab bar, click Configure .

  3. Click Application Image .

  4. Click Connect to download an image from the Schneider Exchange site (optional) prior to selecting it.

  5. Click Search to open the operating system file explorer to select an image if you already have an image file downloaded to your device.

  6. Click Next .

  7. Click Download .

  8. When the File Status dialog box indicates that the download has completed successfully, select OK .

    Note:

    If this Image contains any properties that change the IP settings, you must perform an Activate IP Changes restart. For more information, see Device Restart .

To view the communication status of Modbus devices using Commission mobile application

  1. In the Commission mobile application, connect to the BACnet/IP controller.

  2. On the tab bar, click Commission .

  3. Click I/O Checkout .

  4. On the I/O Resources page the BACnet name of each network interface is listed.

  5. Click Modbus .

  6. On the  Modbus  page, click Properties.

  7. Click the Back arrow.

  8. Click Devices .

  9. In the list of Modbus devices, check the status of the device:

    • Offline (red text): The device is not communicating with the BACnet/IP controller. Click on the Info icon for debug suggestions.

    • Online (gray text): The device is communicating with the BACnet/IP controller.

    Note:

    The Commission mobile application reports the communication status (online or offline) of Modbus devices. I/O Checkout of Modbus devices is limited to Plant Room Sensors.

See Also

  • Modbus Devices in the MP and RP Controller
  • Downloading an Image File to a BACnet/IP Controller