Omron Device Plugin

The plugin's device type OmronDevice also defines the OmronDeviceChannel and therefore extends the basic CodabixDevice and CodabixDeviceChannel entities. While the OmronDevice just represents a concretization of the CodabixDevice, the OmronDeviceChannel extends the CodabixDeviceChannel with the Omron Variable Entities.

Each channel is handled by a Channel Worker which establishes a physical connection to the Omron device. For diagnostic purposes, the worker automatically reads the PLC address “MB 0” every 10 seconds to update the status code of the Channel and description to detect connection failures.

By default, the worker does not read any values. When a client or plugin requests a synchronous read of the Channel variables in Codabix (e.g. using the Codabix Web Configuration's function “Read actual value”), the channel worker reads them from the underlying Omron device and then writes them into the corresponding Codabix Nodes.

Similarly, when a Client or plugin writes values into the channel's variables, the channel worker will write those values to the underlying Omron device.

To have an Omron variable being read steadily, you can edit the Node in the Codabix Web Configuration and set “History Options” to Yes (which will create an internal subscription), or you can use e.g. a OPC UA Client connected to the OPC UA Server plugin and create a subscription for the Omron variable Nodes. In these cases, the channel worker reads the variables from the Omron at a regular interval and, if the value of one of the variables has changed, writes the new value into the corresponding Codabix Node.

Each Omron variable can access the same PLC memory using the same PLC address operand. Supported variable formats are scalar and array variables.