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Component: DMX-512 Master (Comms: System)

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Revision as of 11:49, 3 February 2023 by Wiki bot (talk | contribs)
Author MatrixTSL
Version 2.0
Category Comms: System


DMX-512 Master component

A serial based communications protocol designed for controlling theatrical equipment such as dimmers, fog machines and intelligent lights. DMX-512 Slave devices are daisy chained together with a final 180R terminating resistor at the end of the chail. DMX requires the signal to be level shifted from VCC and GND to +2.5V and -2.5V.

Component Source Code

Please click here to download the component source project: FC_Comp_Source_DMX-512_Master_SCADA.fcsx

Please click here to view the component source code (Beta): FC_Comp_Source_DMX-512_Master_SCADA.fcsx

Detailed description

No detailed description exists yet for this component


Examples

DMX Master Example, reads the value of two ports using switch arrays to set the values and then transmits the data in a DMX packet.

DMX Master Example1


For DMX 512 slave example see: DMX Slave




Macro reference

SetDataChannel

SetDataChannel
Sets the data byte in a data channel 
- UINT Channel
 
- BYTE DataValue
 
- VOID Return


SendDataChain

SendDataChain
Transmits the BREAK, MAB and StartCode followed by the contents of the data channels. 
- BYTE StartCode
 
- VOID Return


Initialise

Initialise
Configures the UART serial interface. 
- VOID Return



Property reference

Properties
Serial Properties
COM Port
Selects which port to communicate with, only lists ports which are currently available.  
Refresh COM Ports
When set to yes the COM port list is rescanned for newly connected or available ports. Note that refreshing the ports list may take a few seconds depending on the number of connected ports. 
Baud
Baud rate passed to the COM port to control the rate of data. 
Timeout Value
Value to specify what is returned when no incoming receive data is present. 
Console Data
 
DMX Properties
Data Channels
Number of data bytes used by the DMX chain, Max 512 bytes per transmission. 24 Bytes minimum to match minimum 1204us timing requirements, not all channels need to be used.