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AHNET PROTOCOL
AHnet protocol
Using 5 bytes communication:
BYTE 0
BYTE 1
BYTE 2
BYTE 3
BYTE 4
Commands
COMMAND
DESCRIPTION
FA XX 01 01 00
GO UP
FA XX 01 00 00
GO DOWN
FA XX 14 00 00
INQUIRY CONTROL BYTE
XX
Number of the device address. Up to 30 devices for each
RS422 BUS
CB1
Response in 8 bites of the device status
CB2
Response in 8 bites of the device status
CB1
BITE
CLOSED
OPENED
PROTECTION STOP
EQUIPMENT OK
To send an order to all the devices, you must use the address:
249 Dec. (Byte1)
F9 Hex. (Byte1)
In this case, the units do not send a reply.
18
START BYTE
ADDRESS BYTE
COMMAND BYTE
VALUE 1
VALUE 2
7
6
RESPONSE
FB XX 01 01 00
FB XX 01 00 00
FB XX 14 CB1 CB2
5
4
3
2
1
1
0
1
0
1
0
1
1
0
1
0
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