The signal descriptions for all signals on the server.

The signal names to claim in this session.

Valid values are in the range [-128, 127].

Initial data for opening a session that must be sent with the first OpenWriteSessionRequest. If this field is specified in later requests or unspecified in the initial request, the session is closed and an error is returned in the call status.

Request a write.

Returns an aborted error if the session should end. May return other errors for non-session-ending failures.

The names of the signals to read.

The values of the signals that were read.

The name to use to refer to this signal using the GPIOService API.

By convention, IO blocks that contain multiple signals typically use names like workcell_outputs.0, workcell_outputs.1, where the number represents the index of the corresponding bit.

If true, then callers can read the value of this signal.

If true, then callers can write this signal's value.

If true, then callers can force this signal's value.

Force methods are not yet available, so this value is always false.

The type of the signal.

The name of the PubSub topic this signal's value is published to.

Optional human readable description of the signal.

Alternative names used to reference signals using the GPIOService API.

Some GPIO service implementations allow signals to be referenced by additional IDs (e.g., OpcuaGPIOService). Those implementations should populate this field with additional IDs for this signal.

Valid values are in the range [0, 255].

Wait until all values in this set are matched.

Wait until any values in this set are matched.

The values of the signals when the condition was met.

When the condition was first met, in server time.

The values to write.