Datasheet

A sample alert message would be:

The first byte is the Message Type (0x40), which identifies this as an alert message.

The second and third bytes are 0xABCD, which is the unique alert ID.

The fourth byte indicates that we have a message payload of 4 bytes.

The last four bytes are the actual payload: 0x10000742 in this case, assuming we were

transmitting a 32-bit value in little-endian format.

Standard Alert IDs

Alert IDs in the range of 0x0000 to 0x00FF are reserved for standard SDEP alerts, and may

not be used by custom alerts.

The following alerts have been defined as a standard part of the protocol:

Name

Message Type

Alert ID

Payload Length

Payload

Type

U16

...

Meaning

Always '0x40'

Unique ID for the Alert Condition

Payload Length (0..16)

Optional response payload

40 CD AB 04 42 07 00 10

0: Message Type (U8)

1+2: Alert ID (U16)

3: Payload Length

4+5+6+7: Payload

0x40

0xCD 0xAB

0x04

0x42 0x07 0x00 0x10