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Crestron e-control Database Manager SW-DBM

69 •• Appendices Installation & Reference Guide — DOC. 5823

Enable scroller signal

Description

This signal enables/disables the signal block.

Direction

System to Server

Type

Digital

Value

Assert to enable the signal block

De-assert to disable the signal block

Expected Reply

None

Comments

The signal block must be enabled prior to use. If not, all signals which operate on

scrollers (which does not include scroller config signals) produces the following

error:

Query not opened.

When the signal block is enabled, a query is initiated to establish a recordset. (See

NewQuery signal.) If the query cannot be found, the following error is produced:

Scroller NAME cannot find query number n.

The signal block remains disabled. To try again, it is first necessary to de-assert

the Enable signal, in order to re-assert it. To try again with a different query

number, before re-asserting, set the query number using the NewQuery signal.

Upon successful enable, the following takes place:

§ The scroller is blanked (but only if the Blank scroller upon signal block

enable checkbox in the Scroller Signal Block Definition window has

been checked)

§ NewQuery signal simulated

§ First signal simulated

§ Enabled signal asserted

De-assertion of (i.e., resetting) the Enable signal disables the signal block, as

follows:

§ Query is closed

§ The scroller is blanked (but only if the Blank scroller upon signal block

disable checkbox in the Scroller Signal Block Definition window has

been checked)

§ Enabled signal de-asserted (reset)

It is recommended that if the NewQuery signal was used, that its value be reset to

zero (0).

See Also NewQuery, First, Enabled signals

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Crestron CT-3000 Spezifikationen Seite 69