modbus slave drive

[38368423]

I’ve never really understood the differences between the three modes: Independent device, Device gateway, and Channel gateway. I’ve chosen Channel gateway for everything, because it allows me to transmit partial data from a single device to a third party, and also aggregate data from multiple devices to a third party. At the same time, the third party can send commands to modify the corresponding channel values. It’s very flexible. My question is: since Channel gateway can fulfill all requirements, why are the other two modes still needed?

[Mikhail]

Hi,

Independent Device
Independent device mode allows receiving data from a controller acting as a Modbus Master. Additionally, the controller can read previously recorded tag data.

Device Gateway
Device gateway mode allows you to share current channel data from a selected device with a third-party system. Channel assignment is based on a comparison of the tag codes defined in the Modbus template and the tag codes of the device being broadcast.
This mode is easy to configure because it allows you to use the same template previously created for Modbus Master devices.

Channel Gateway
Channel gateway mode allows you to provide current data from selected channels to a third-party system. Channels are explicitly specified in the Modbus Slave device configuration.

[Author]

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