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Crestron e-control Database Manager SW-DBM

23 •• Server Configuration In Depth Installation & Reference Guide — DOC. 5823

server-signal block interface; i.e., information that all signal blocks must have to

be handled by the server as signal blocks.)

• Optional signal definitions. Words shown in the Signal Block Definition window

in bold case are names of optional signals implemented by the signal block.

These are included in the signal block definition (they are "defined") either by

checking the adjacent checkbox, or (in the case of a set of enumerated signals)

by supplying a non-zero number in the adjacent text field. Undefined signals do

not appear in the signal list and must not appear in the matching Intersystem

Communications symbol on the control system side. Be aware that there may

also be a number of non-optional signals which are not shown in the window.

• Behavior options. These have specific effects on signal block behavior when the

server protocol is running.

The highest numbered signal in the signal block’s input or output signal lists is

shown in the box in the upper-right corner. This is based on the signal offset entered

in the adjacent box and the current signal block definition. This value is updated

synchronously as the user interacts with the window. This box turns red when the

highest analog or serial signal number on either the input or the output lists exceed

1023; or should the highest digital signal number exceed 4095.

Interface Definition

All signal blocks require the following basic information. Fields for these data are

shown across the top of all Signal Block Definition windows.

Name

A unique signal block name is required here. This name is used in the server’s user

interface to identify the signal block. It is also sent along with error messages to the

control system to identify the source of the error. We recommend choosing a name

that reflects either the location of the control system (such as BOOTH3) or its

function (such as PHONEBOOK).

COM Settings

The COM Settings list box contains the names of all the COM Settings definitions

from the COM Settings tab. Point the signal block to a particular COM Settings

definition by selecting it from the list.

Each signal block must be associated with a control system. Control systems are

defined separately under the COM Settings tab. You may define the signal blocks

first if you like, then define the systems, and come back and make the associations

later. Note, however, that signal blocks cannot be activated without first associating a

system, through its COM Settings connection, with the signal block.

Channel

For systems with multiple Virtual COM Port channels defined, select a channel here.

Signal Offset

When a signal block shares a signal space (a channel) with another signal block, they

both cannot begin numbering their signals at 0. In such a case, supply values space

the signal blocks’ signals properly — such that they do not overlap with each other.

If any signal blocks’ signal spaces overlap, attempting to start the server protocol

results in an error.

Auto-enable

If this box is checked, the signal block is automatically enabled when the server

protocol is started.

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