INSTEON Hub: Developer`s Guide

INSTEON Hub: Developer’s Guide

Set INSTEON ACK Message Byte

Set INSTEON ACK Message Byte (0x68)

What it does

What you send

What you’ll get

LED indication

Related Commands

Byte Value

1 0x02

2

3

0x68

<Command 2 Data>

Allows you to put one byte of data into the Command 2 field of the INSTEON ACK message that the

INSTEON Engine automatically sends after it receives an INSTEON Direct message.

3 bytes.

4 bytes.

None.

IM 0x50 INSTEON Standard Message Received

22

IM 0x51 INSTEON Extended Message Received

23

IM 0x71 Set INSTEON ACK Message Two Bytes

25

IM 0x70 Set INSTEON NAK Message Byte

26

Command Sent from Host to IM

Meaning

Start of IM Command

IM Command Number

Data byte to place into the Command 2 field of the ACK response.

Message Returned by IM to Host

Byte Value

1

2

3

0x02

0x68

<Command 2 Data>

4 <ACK/NAK>

Meaning

Echoed Start of IM Command

Echoed IM Command Number

Echoed <Command 2 Data>

0x06 (ACK) if the IM executed the Command correctly.

0x15 (NAK) if an error occurred.

Notes

You have only about 15 milliseconds after the receipt of an INSTEON Direct message from the IM to send this Command to the IM. The reason is that the INSTEON Engine in the IM automatically sends

Acknowledgement messages in assigned timeslots.

Use Set INSTEON ACK Message Two Bytes

25 when you need to return two bytes of data in an ACK message.

Use Set INSTEON NAK Message Byte

26 when you need to return one byte of data in a NAK message.

Certain INSTEON Direct Commands require returned data in the Acknowledgement message. For more information on INSTEON Commands and the latest Command set, please download the current

INSTEON Command Tables Document

2

from http://code.insteon.com

.

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