I just worked on a project with one, and the dealer was unusually reticent to share the full protocol. This is what they did share, and is confirmed working over RS232 and IP.?
Here are the commands for the Novastar presets. Strings can be sent UDP port 6000, commands start and end with square brackets.
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preset1 (dual 16x9)-? [{"cmd":"W0605","deviceId":0,"screenId":0,"presetId":0}]
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preset2 (single 16x9 centered)- [{"cmd":"W0605","deviceId":0,"screenId":0,"presetId":1}]
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layer off (power off)- [{"cmd":"W0605","deviceId":0,"screenId":0,"presetId":2}]
If you're doing RS232, here is the pinout we used:
Terminate the RJ45 as normal 568B, then connect as follows to the Crestron RS232 block:
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Pin 1 (Orange Stripe) to RX
Pin 2 (Orange) to TX
Pin 3 (Green Stripe) to Gnd
