Link a gateway to an asset of the same type
When a physical gateway is replaced by another gateway type, the new gateway must be linked correctly in the Calculus platform. For example, this applies when a C07 gateway is replaced by a C04 gateway.
Depending on the situation, you either link the new gateway to the existing asset, or you create a new asset with the correct asset type.
This article explains which steps to follow and what to check afterwards.
Before you start
Before making changes, first check whether only the gateway has changed, and whether the asset type also needs to change.
There are two possible situations:
The gateway type has changed, but the asset type remains the same.
The gateway type has changed, and the asset type also needs to change.
The correct procedure depends on this difference.
Link the new gateway to the existing asset
If the physical gateway was replaced, but the asset type remains the same, you do not need to remove or recreate the asset.
In this case, you only need to link the new gateway to the existing asset.
For example, if a C07 gateway is replaced by a C04 gateway, but the asset itself still uses the same asset type, the existing asset can remain in place.
Follow the steps in this article to link or change the gateway connected to an asset: Linking a new gateway to an asset.
After linking the new gateway, continue with the section Verify that the asset is receiving data.
Attention!
This only applies when the asset type remains the same. If the asset also needs to use another asset type, the existing asset must be removed and created again with the correct type.
Create a new asset when the asset type changes
If the asset type also needs to change, the existing asset cannot simply be reused. The asset type determines which data structure, measurements and configuration are used for the asset. If the wrong asset type is used, the asset may not show the expected data correctly.
In this case, follow these steps:
Remove the existing asset.
See: Delete an asset.Create a new asset with the correct asset type.
See: Add an asset.
Link the new gateway to the new asset. Make sure the new gateway is linked to the asset that was created with the correct asset type.
Add the new asset to the correct project group. This is required to make the asset available on the correct dashboard.
See: Project groups.
Verify that the asset is receiving data
After linking the gateway, always verify whether the asset is actually receiving data. You can do this via Current Activity.
Current Activity shows the most recent data received by the asset. This allows you to check whether communication between the gateway and the asset is working correctly.
See: Data not showing: Current Activity.
If Current Activity shows recent data, the gateway is communicating with the asset.
If no recent data is shown, continue with the checks below.
Check the communication settings
If no data is received, check whether the communication settings of the gateway match the settings of the connected controller.
For example, when using a DEIF AGC4 controller, settings such as the baudrate and slave ID must match the configuration of the controller.
Depending on the installation, you may need to verify:
Baudrate
Slave ID
Communication protocol
Serial port settings
Controller-specific communication settings
If these settings do not match, the gateway may be connected correctly, but still be unable to read data from the controller.
Check the metadata
In some setups, metadata is used to define communication parameters or additional configuration values.
If metadata is required for the asset or gateway, make sure it is filled in correctly and matches the connected controller.
See: Metadata.
Check the gateway status LEDs
Check the status LEDs of the gateway to verify whether the gateway is powered, connected and functioning as expected.
The LEDs can help indicate whether the issue is related to power, connectivity or communication.
See: Data not showing: LEDs.
Check the physical wiring
If the configuration looks correct, also inspect the physical wiring between the gateway and the controller.
Check whether the wiring is connected correctly and securely.
For Modbus RTU installations, verify the RS-485 wiring as well.
See: RS-485/Modbus RTU connection.
Summary
When a gateway is replaced by another gateway type, first check whether the asset type also changes.
If only the gateway changes, link the new gateway to the existing asset.
If the asset type also changes, remove the existing asset and create a new asset with the correct type. Then link the gateway and add the asset to the correct asset group.
Finally, always check Current Activity to confirm that the asset is receiving data. If no data is shown, check the communication settings, metadata, gateway LEDs and physical wiring.