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Old November 24th, 2009   #10
Task Group Member
Join Date: Jun 2006
Posts: 181

Following discussions at LDI amongst attendees of the ESTA Control Protocols Interoperability Pavillion (the RDM demo area), the following approach was discussed and has merit.

If the controller discovers a device that supported QUEUED_MESSAGES, then use that. For devices that DO NOT support QM, use a combination of GET:IDENTIFY_DEVICE and GET_DEVICE_INFO.

The use of IDENTIFY_DEVICE has low overhead, as the response message is short, and allows the controller to remain in sync with the true state of a responders IDENT status.

The use of DEVICE_INFO, whilst having a slightly higher response overhead (the message is slightly longer), it has the advantage of allowing the controller to keep track of the responders DMX Address and Personality.

Peter Willis
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