ARTHUR HOLM AH22D116A2F Manual del usuario - Página 14

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User manual

AHnet Protocol

› ›

Communication›type›:›RS422

› ›

Connection›type›:›RJ45

› ›

Wiring›type›:›CAT-5

› ›

Speed›and›configuration›:

› – Baud›Rate›=›38400

› – Data›Bits›=›8

› – Parity›=›None

› – Stop›Bits›=›1

WIRING›DIAGRAM

Pins 1&2:›the›units› › respond

Pins 3&6:›the›units›receive›orders

Protocol›to›control›the›monitor›by›addressable›RS422›bus.›It›is›possible›to›connect›up›to›30›monitors›to›the›same›RS422›bus.›

It›is›possible›to›use›a›AH›Interface›Ethernet›to›control›the›RS422›bus.›The›units›should›have›set›an›address›and›the›address›

must›start›by›1.›Maximum›cable›length›between›ends›is›500m.

AHnet›PROTOCOL

Using›5›bytes› › communication:

BYTE 0

BYTE 1

BYTE 2

BYTE 3

BYTE 4

1.› Data›TX+

2.› Data›TX-

3.› Data›RX+

4.› NC

5.› NC

6.› Data›RX-

7.› NC

8.› NC

START›BYTE

ADDRESS›BYTE

COMMAND›BYTE

VALUE›1

VALUE›2

AHnet Protocol