Shifting Region Technical Reference

Shifting region tracking configuration

To configure a shifting region, the corresponding record in the PRT_REGION file should have:

tracking_type_id: SHIFTING

tran_region_id: region_id of the transition region of shifting region.

When a new shifting region is configured, on the subsequent startup PRT will create blank items automatically for all the locations. These blank items are only placeholders; they cannot be deleted, added, or moved by the user.

Important: While configuring item types, do not configure any as item_type_id, which is a GE Fanuc reserved word for item_type_ids of blank items for the Import/Export utilities.

Shifting region process behavior

Other process behavior regarding shifting regions includes:

Process

Description

PRT

PRT never returns blank items when a request for an item list is made. It will return only the valid items, and the RegionLoc field in the item structure will contain the actual location of that item.

GLB_VERIFY

GLB_VERIFY checks that the number of occupied locations in a shifting region is equal to the region capacity.

prt_ui

prt_ui displays a blank row for each blank location in a shifting region. A user cannot modify, delete, or move items at these locations.

PRT_EXPORT/
PRT_IMPORT

While exporting a shifting region,

prt_export generates one record for every blank location (even if the location can contain multiple items).

This record contains the location number and the item_type_id as $$GEF@BLK@ITM$$.

On import of these records with the reserved item_type_ids,

prt_import generates blank item(s) at those locations.

PRTCNT

If:

 

The prt_att_pt file is configured to display n to n+m items in a region and

Any of the locations in that range is blank,

Then no data is displayed for that location.

 

If:

 

The prt_att_pt file is configured to display the last n items in a shifting region and

The number of valid items are equal to or greater than n.

Then the last n valid items will be displayed.

The prt_att_pt file is configured to display the last n items in a shifting region and

The number of valid items are is less than n.

Then those items will be displayed and the remaining locations will display blanks.

More information

2. PRT configuration file programs and utilities.