Ahnet Protocol - ARTHUR HOLM ERT 30 User Manual

AHNET PROTOCOL

AHnet protocol
Using 5 bytes communication:
BYTE 0
BYTE 1
BYTE 2
BYTE 3
BYTE 4
BYTE 0 is the header and should always FA in HEX mode.
BYTE 1 is the AHnet address unit to send the command. To send the
command to all the devices, there is a special AHnet address used as
broadcast. Please, refer to the user guide of the device, as there are
different family broadcast addresses.
BYTE 2 is the function to execute on the unit.
BYTE 3 is the first value of the function.
BYTE 4 is the second value of the function. In some functions, this value
is not used and should be "00".
Below, there are some AHnet commands used to control the different
families of devices. You will find more AHnet commands on each
particular user guide.
20
START BYTE
ADDRESS BYTE
COMMAND BYTE
VALUE 1
VALUE 2