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_locatt_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.

More information

PRT Configuration file definitions.