User guide

Request ID of Current Cue

F0 = Start message

1F = LCS Audio manufacturers ID

7E = Matrix3 Product ID

25 = External Control Subsystem

3F = Broadcast to all LX-300s (All LX-300s will respond)

40 = Command: Get Current Cue ID

01 = Length of following data

XX = Tag Number

XX = Calculated checksum value

F7 = End message

The response of this request message is sent directly back to the requesting computer on the same serial port as

it was received. The response will contain the tag number that was in the request, so you can be sure that a response

is for you and not another system. There will be the response and then there will be an ACKnowledge message.

ACK Response Example

Request the most recently recalled Cue with a Tag Number of 01 (Checksum is 3D).

F0 = Start message

1F = LCS Audio manufacturers ID

7E = Matrix3 Product ID

25 = External Control Subsystem

3E = Reply ID code

XX = Source Frame ID

40 = Command: Get Current Cue Response

03 = Length of following response data

00 = Tag Number of Request (same as tag value in request)

XX = Least significant 7 bits of Cue ID

XX = Most significant 7 bits of Cue ID

xx = Calculated checksum value

F7 = End message

Cue List Controls

The Cue List may be controlled in the LX-300 with the following commands.

Select Cue List

F0 = Start message

1F = LCS Audio manufacturers ID

7E = Matrix3 Product ID

11 = Cue List Subsystem

3F = Broadcast to all LX-300s (Using checksum; use 7f for no checksum)

54 = Select Cue List command.

XX = Least significant 7 bits of Cuelist ID

XX = Most significant 7 bits of Cuelist ID

XX = Calculated checksum value (use 00 as placeholder if message was sent with no checksum)

F7 = End message

Cue List Controls