ARTHUR HOLM DynamicCourtesyBox Podręcznik użytkownika - Strona 13

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AHNET PROTOCOL
Communications protocol
COMMUNICATION
CONNECTION
WIRING
Wiring Diagram
1. Data TX +
2. Data TX –
3. Data RX +
4. NC
5. NC
6 .Data RX
7. NC
8. NC
Connection
PINS 1 & 2
The units respond
PINS 3 & 6
The units receive instructions
Protocol to control the unit by addressable RS422 bus.
You can connect up to 30 monitors on the same RS422 bus.
You can use a AH Interface Ethernet, to control the RS422 bus.
The units should have a set address and the address must start by 1.
Maximum cable length between ends, 500 m/1640 ft.
AHnet protocol
Using 5 bytes communication:
BYTE 0
BYTE 1
BYTE 2
BYTE 3
BYTE 4
RS422
RJ45
CAT-5
START BYTE
ADDRESS BYTE
COMMAND BYTE
VALUE 1
VALUE 2
Speed and configuration
BAUD RATE
DATA BITS
PARITY
STOP BITS
RJ-45
38400
8
NONE
1
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