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Device

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Revision as of 08:22, 29 June 2007 by 10.5.101.111 (talk)

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.