ARTHUR HOLM AHD2TL, User Manual

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15
AHnet protocol
AHnet PROTOCOL
Using 5 bytes communication:
BYTE 0 START BYTE
BYTE 1 ADDRESS BYTE
BYTE 2 COMMAND BYTE
BYTE 3 VALUE 1
BYTE 4 VALUE 2
COMMANDS
COMMAND DESCRIPTION RESPONSE
FA XX 01 01 00 GO UP FB XX 01 01 00
FA XX 01 00 00 GO DOWN FB XX 01 00 00
FA XX 04 01 00 BUTTON LOCK FB XX 04 01 00
FA XX 04 00 00 BUTTON UNLOCK FB XX 04 00 00
FA XX 13 00 00 FAILURE OFF FB XX 13 00 00
FA XX 14 00 00 INQUIRY CONTROL BYTE FB XX 14 CB1 CB2
FA XX 15 00 00 INQUIRY FIRMWARE VERSION FB XX 15 FW
XX Number of the unit address.
Up to 30 units can be connected for each RS422 BUS
CB1
Response in 8 bits of the monitor status
CB2 Not implemented