Matrix-orbital LK404-25 Manual do Utilizador descarregar pdf (Página 23)

6.4 General Purpose Output

4.1 General Purpose

Output On

Dec

Hex

ASCII

254 87

FE 57

■ W

Number

v5.0

Turns the specified GPO on, sourcing current from an output of five volts.

Number

Byte

GPO to be turned on.

4.2 General Purpose

Output Off

Dec

Hex

ASCII

254 86

FE 56

■ V

Number

v5.0

Turns the specified GPO off, sinking current to an output of zero volts.

Number

Byte

GPO to be turned off.

4.3 Set Start Up

GPO State

Dec

Hex

ASCII

254 195

FE C3

■ ├

Number State

v5.0

Sets and saves the start up state of the specified GPO in non volatile memory. Changes will be seen on start up.

Number

Byte

GPO to be controlled.

State

Byte

1 for on or 0 for off.

6.5 Dallas One-Wire

5.1 Search for a

One-Wire Device

Dec

Hex

ASCII

254 200 2

FE C8 02

■ ╚ SOT

v5.0

Sends a search query to each of the up to 32 devices on the one wire bus. Any connected device will respond with

an identification packet.

Response

Bytes [14]

Dallas One-Wire identification packet as shown below.

Table 13: Dallas One-Wire Packet Information

Offset

Length

Value

Description

9002

Preamble

138

Another device packet will follow OR

Last device packet

Packet Type

Error Code (0 indicates success)

Device Address

CRC8 address check (0 indicates validity)

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 36 37

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