Digi m10 Technical Overview

4. Digi Extended Packets

In addition to the ORBCOMM serial commands defined in the ORBCOMM Serial Specification, the following Digi Extended Packets are available to the host controller:

Temperature Out of Bounds Packet

Temperature Query

Temperature Query Response

NVM Data Corruption Alert Packet

Code Upgrade Packet

RTS/CTS Control Packet

The following sections provide details about these packets.

4.1Temperature Out of Bounds Packet

Table 2: Temperature Out of Bounds Packet

0

0x05/0x06

Packet Header

 

 

 

1

0x18

Packet Type

 

 

 

2

Length0

 

 

 

Length of the packet

3

Length1

 

 

 

 

4

Retry_count/ Pkt Sequence Number

 

 

 

 

5

Temp0

 

 

 

 

6

Temp1

Temperature value

 

 

in little endian

 

 

7

Temp2

format.(This is a 32

 

 

bit floating point

8

Temp3

number)

 

 

 

 

9

Fletch0

 

 

 

Fletcher Checksum

10

Fletch1

 

 

 

 

NOTE: This packet is sent from the Digi m10 to DTE when temperature of the Digi m10 goes beyond the operating range (-40C to +85 C). DTE should power down the Digi m10 when this packet is received.

Digi International, Inc. © 2009

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Digi M10 manual Digi Extended Packets, Temperature Out of Bounds Packet