Crestron CT-3000 Specifiche Scaricare il pdf (Pagina 65)

Crestron e-control Database Manager SW-DBM

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

DataFilter scroller signal

Description

Direction

System to Server

Type

Analog

Value

A bit pattern

Expected Reply

Comments

The bits in the pattern refer to the fields listed in the datafields field of the

Queries table. There is a one-to-one correspondence between the bits in the

pattern and the fields in the opened record. Bit 0 corresponds to the first field listed,

bit 1 to the second, etc. When a bit is set, the field is transmitted.

The bit pattern has an initial value specified as part of the scroller definition; it can

also be set at run-time using the DataFilter (analog) signal. The initial value is

shown in the Scroller Signal Block Definition window in hexadecimal. Note that the

default for this initial value is $FFFF (all bits set = all fields sent).

The bit pattern contains only 16 bits. Therefore only the first 16 data fields are

filterable. Any additional listed fields are always sent.

Data are transmitted using the Data signal with a number equal to the position of

the field in the list in the datafields field of the Queries table.

Example 1: Assume there are four fields listed in datafields. If the first and third fields

are filtered out (value set with DataFilter = $FFFA), the second and fourth fields are

transmitted via signals Data2 and Data4.

All Data signals in a successive query are subject to filtering, including those

signals used to echo the list fields.

Example 2: Consider Example 2 in the entry for the Data signal. To filter out extra list

field columns from being echoed, as well as any echoes from the last list at all, and

to echo only the second field listed in datafields, set the filter to $83. With this setting

only the following signals are sent: The contents of the first picked record’s list field

echoed via Data1; the contents of the first (of three) columns (only) of the second

picked record’s list fields via Data2; nothing of the third picked record’s list fields, but

upon the third touch, the second (of three) data fields via Data8.

Note that regardless of the number of fields listed and the current value of the data

filter bit pattern, only the first n signals can ever be transmitted, where n is the

number of Data signals defined.

If Renumber fields is checked in the Scroller Signal Block Definition window, the

fields remaining after the filter is applied are renumbered consecutively.

Example 3: Consider again Example 1, above. If the (proposed) “compress” option is

checked, the data would instead be transmitted via the first two Data signals, namely

Data1 and Data2.

Example 4: Consider again Example 2, above. Instead of responding with Data1,

Data2, and Data8, the server would respond with Data1, Data2, and Data3.

Note however that the Renumber fields checkbox remains unimplemented in the

present release.

Commenti su questo manuale

Nessun commento

Crestron CT-3000 Specifiche Pagina 65

Commenti su questo manuale