Industrial Ethernet manager or Modbus TCP IOScanner is presented with a red triangle in the Devices tree.

The configuration is not compliant with the controller version.

oBuild > Clean all

oBuild > Rebuild all

oEnsure that the controller has the latest firmware version.

A device is presented with a red triangle in the Devices tree.

The controller is unable to communicate with the device.

oVerify device wiring and powering.

oVerify device IP address (by using the Remote ping service on the IP address of the device.).

oVerify whether the device supports the read/write request.

oVerify whether the accessed registers are relevant for this device.

oVerify whether the accessed registers are not write-protected.

oVerify that the FDR (Fast Device Replacement) service is properly configured inside the device.

oVerify that the Master IP address parameter is properly configured inside the device.

A device/channel is temporarily presented in red.

The wiring is unstable.

Verify the wiring.

Configuration requires adjustment.

oIncrease the health timeout value.

oIncrease the repetition rate value.

The load is too important for the protocol manager.

Verify the Scanner Resources tab.

Some states of the device are not presented in the application.

For Modbus TCP slave device:

The repetition rate is too slow (the value is too high).

Decrease the repetition rate value for the channels associated to this device.

Some states of the device are not presented in the application.

The bus cycle task is not fast enough.

oAssociate the scanner to a different task (Modbus TCP IOScanner).

oDecrease the cycle value of the associated task.