Device

Examples of device types are AlphaCom module, RIO, AlphaPro, Control Handler. All such devices have a unique device address when interconnected. The AlphaCom and AlphaPro have fixed device address, while the device address of e.g. a RIO is configured (inside the RIO) for the particular application.

All ACDP data messages are addressed to a device. A device is always related to (owned by) a node. A full device address consists of <node> <device>.
<Device> is one byte. Note that devices can both be physical boxes (e.g. RIO) or a function (Router).

Value (decimal)	Value (Hex)	Device Function
0	0x00	Invalid device (reserved NULL value)
1 - 64	0x01 - 0x40	External boxes. RIOs, PCs etc.
65	0x41	The AlphaCom Intercom Exchange - Master AMC<br\>This is the device address for messages to/from the exchange.
66 - 68	0x42 - 0x44	AlphaCom multi-module slave AMCs. <br\>(Can NOT be controlled via the AlphaCom data protocol)
69	0x45	(Reserved more slaves)
128 - 199	0x80 - 0xC7	(Future use)
200	0xC8	Bitbucket - valid “ignore” address<br\>Use as message source if you don’t want a response.
201 - 202	0xC9 - 0xCA	(Future use)
203	0xCB	AlphaPro PC
204	0xCC	Data router (used with ISO1745)
205	0xCD	Audio Path Router (used in AlphaNet)
206	0xCE	TouchLine command interpreter (TL exchanges only)
208 - 255 <br\><br\><br\><br\><br\><br\>	0xD0 - 0xFF <br\><br\><br\><br\><br\><br\>	Broadcast<br\>- When an external device sends a message addressed to <node><broadcast>, the addressed <node> exchange will send this message out on all it’s ports with the Broadcast option enabled. <br\>- It’s up to each connected device to actually handle or ignore the broadcast. <br\>- Broadcast to ALL devices is by convention device 0xFF.<br\>- There is currently no pre-defined use of other broadcast addresses. They may be used to address groups of devices.