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Crestron e-control Database Manager SW-DBM

41 •• Demos Installation & Reference Guide — DOC. 5823

If the scroller is an orphan (not owned), the scroller’s current pick action setting

determines what action to take. The default action (value = 0) is to “open” the record

and transmit its contents using the Data

signals. The order in which the fields are

sent is as listed in the dataFields field of the Queries table. Certain listed fields

may be omitted based on the current value of the data filter bit pattern.

NOTE: There is only one pick action defined for orphan scrollers in the present release.

The CloseRec signal “deselects” the picked record, blanking the dataFields, and

making the record unavailable for deletion with the DeleteRec signal or for editing

with the Write

signals (see next section for more on these two signals).

Adding a Record

The NewRec signal creates a new record (a blank row) in the current database table.

You can then update the fields in this new row as described in the section “Updating

a Record” (below).

Updating a Record

Fields may be changed repeatedly using the Write

signals which update records

immediately upon receipt by the server. The numbering of the Write

signals

parallels that of the Data

signals.

Upon a successful write, the server always echoes back the written data in a Data

signal which updates the data field on the touchscreen to match the data just written

out to the database file. Also, if the field so changed is also a list field (a field that

appears in the scroller itself), a List

r,c

signal may be sent as well. Finally, the Done

signal is pulsed after a successful write.

Deleting a Record

Once a record is picked, you can use a DeleteRec signal to delete it from the

recordset and the corresponding database table.

The DeleteAllRecs signal deletes all of the records in the table, leaving an empty

table. (Be very careful with this signal!)

Demos

Three demonstrations on the use of the Database Manager are included with the

package. Each demo is described along with an accompanying “bird’s eye view”

diagram of its SIMPL program. . All demos use the following three files:

• A VT Pro-e source file (demoDBM.vtp file), containing pages for all three

demos, ready to be compiled LC-3000 touchpanel.

• A compiled touchscreen file (demoDBM.hex file); dervied from the above;

ready to upload to an LC-3000, CT-3000, CT-3500, or VT-3500.

• A Configuration file (demoDBM.ini) configures the server for all three

demos.

In addition, each individual demo has a folder containing the following files:

• A SIMPL Windows source file (demo?.smw file), ready to be compiled for a

CNMSX-PRO control system (“PRO” = front panel with LCD display) with a

CNXENET (Ethernet) card in the DPA slot.

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