INSTEON Hub Developer's Guide

INSTEON Hub: Developer’s Guide
Page 6 © 2013 INSTEON
IM Serial Communication Protocol
All INSTEON Modem (IM) Serial Commands start with ASCII 0x02 (STX, Start-of-Text) followed by the
Serial Command Number (see IM Serial Commands
12
). What data follows the Command depends on the
Command syntax (see IM Serial Command Summary Table
13
and IM Serial Command Charts
18
).
When you send a message to the IM, it will respond with an echo of the 0x02 and the IM Command
Number followed by any data that the Command returns (often just an echo of what you sent to it). The
last byte it sends back will be ASCII 0x06 (ACK, Acknowledge).
(S: and R: denote serial data you Send to or Receive from the IM, respectively.)
S:
0x02 <Command Number> <parameters>
R:
0x02 <Command Number> <any returned data> 0x06 (ACK)
If the IM is not ready, it will respond with an echo of the 0x02 and the IM Command Number followed by
ASCII 0x15 (NAK, Negative Acknowledge).
S:
0x02 <Command Number> <parameters>
R:
0x15 (NAK)
If you receive 0x15 (NAK), resend your Serial Command.
INSTEON HUB communication syntax and examples
Insteon Commands
(Commands to send (through the HUB and PLM) to other Insteon devices)
Control Commands
Cmd1 Cmd2
0x11 On Group number or On level
0x12 Fast On Group number or Ignored
0x13 Off Group number or Ignored
0x14 Fast Off Group number or Ignored
0x15 Bright Group number or Ignored
0x16 Dim Group number or Ignored
0x17 Start Dim/Brt 01 = bright 00 = dim
0x18 Stop Dim/Brt Ignored
Query Commands
0x10 ID Request Ignored
0x19 Status Request Ignored

INSTEON Hub Specifications

General

Product Name	INSTEON Hub
Model Number	2245-222
Connectivity	Ethernet
Communication Protocol	INSTEON
Operating Temperature	0°C to 40°C (32°F to 104°F)
Operating Humidity	85% non-condensing