6.6.4 Choke Move Method

Move Method is used to adjust the opening size in a choke.

Signature:

	Move (
			[in] 0:Float		Position,
			[in] 0:Boolean	OverrideInterlocks,
			[in] SEMEnum		SEM);
	

Method result codes are defined as part of the Call Service (see OPC 10000-4). They are described in Table 124 for ease of reference.

Comments:

The Move Method initiates a move command. Parameters include the position value in percent, overriding of any interlocks and the SEM selection to use for the command. The Position Method argument value shall be between 0 and 100. The server shall return Bad_OutOfRange if the Position Method argument value is outside of this range. After receiving the new commanded position, the choke will start to move. The Method will complete when the command has been accepted. The move operation may or may not have completed when the Method returns. The Method returns errors only if the operation cannot be started. The Client must monitor the Moving Variable to determine when the move operation actually finishes.

If a Server does not support an Override of defeatable interlocks, then this parameter will be ignored by the Server. If any interlocks are active the appropriate error code is returned.

If a Server does not support the selection of SEM, this parameter is ignored.

Table 42 specifies the AddressSpace representation for the choke Move Method.