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Honeywell Galaxy Ethernet Adapter RS485 Protocol

This is a belated follow-up to my previous posts, this time about the Honeywell Galaxy RS485 protocol, covering the Ethernet adapter. The adapter normally provides reports to an Alarm Receiving Centre (ARC). It can also be used to configure the alarm panel through Honeywell software. It does not, as far as I know, provide any direct interface to the alarm to allow it to be set/unset/etc. Devices like the LCE-01 provide this via a virtual keypad interface, by emulating a keypad on the RS485 bus (i.e. it does not interact with the panel through the normal panel<->ethernet interface, but instead through the panel<->keypad interface).
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