PRT_ATT_PT

The PRT Region Item Attribute Display Point ( prt_att_pt ) configuration file is used to define the setpoint ID that will hold the value for an item attribute in a region location. This file must be configured when prt_grd is configured.

OPTIONAL FILE

The fields are:


No.	Field Name	Description	Data Type	Entry Example
0	gd_service_id	Unique name of the Process Service ID.	32 characters	PRTGRD
1	region_id	Unique name for the region.	16 characters	OVEN1
2	item_att_name	Textual description of the item attribute, as follows: PRT_ITEM_ID PRT_REFERENCE_ID PRT_ITEM_TYPE_ID PRT_ITEM_STATUS PRT_ASSOC_ITEM Note: When using prt_item_status in this field, the values in att_start_loc and att_end_loc must both be 0.	16 characters	ITEM_ID
3	display_ptid	Unique name of the array point. The definition of the point depends on the item_att_name field, as follows: PRT_ITEM_ID – Point class must be Text; Point type must define a text size of at least 20. PRT_REFERENCE_ID – Point class must be Text; Point type must define a text size of at least 20. PRT_ITEM_TYPE_ID – Point class must be Text; Point type must define a text size of at least 20. PRT_ITEM_STATUS – Point class must be Analog; Point type must be ANALOG_U32. PRT_ASSOC – Point class must be Text; Point type must define a text size of at least 20. User defined – Point class must be Text. The number of region locations covered by the Point determines the number of elements needed. Use this formula to calculate the number of elements: ( end_loc ) – ( start_loc ) + 1	55 characters	OVEN1_ INDEX
4	start_loc	First location in the region covered by this Point. If this value is '-2', then the Point displays data from the last <n> items in the region, where <n> is the number of elements in the Point.	Integer	1
5	end_loc	Last location in the region covered by this Point. Due to a restriction on Point size, one Point may not be able to cover an entire region; in which case, the region must be broken into subsets. Each subset as defined by a starting and ending location, is covered by a single Point.	Integer	25
6	att_start_loc	First location in the attribute to parse when setting value of display_ptid . The default value is 0. See Note.	Integer	0
7	att_end_loc	Last location in the attribute to parse when setting value of display_ptid . The default value is 0. See Note.	Integer	0
8	item_class_id	Name of the item class that can provide values for this Point. If a class is not specified, any item type will provide data. If more than one item matches the item filtering, the value of the Point is indeterminate.	16 characters	DRYER

Note: The value of ( att_end_loc – att_start_loc + 1) can be no greater than the data length of display_ptid .

When using the default value (0) in either the att_end_loc or the att_start_loc field, the entire attribute will be transferred to display_ptid and no parsing will take place.