Specifications

GWY-01-DNT-01 MANUAL – REV. 02 CHAPTER 4:

COMMAND MAPPING

PAGE 40 OF 67

4.6 CB

X ERROR RESPONSE PACKET STRUCTURE

Below is the packet structure of a CBx error response. Note that the one-byte Error

Code value is returned in the MSB of the seventh data word.

ERROR RESPONSE ELEMENT MSB LSB

Overall Length: 2-byte value indicating the

number of “words” in the Response Packet.

This value will always be at least 7 words (6 +

1 for the error code).

0x00 0x07

Error Flag: 0xFF in the MSB indicates that an

error occurred.

Error Information Byte: 0xFF in the LSB

indicates that a controller-based error

occurred. Any value other than 0xFF indicates

that a Gateway-based error occurred (and

indicates the command that was attempted

when the error occurred).

0xFF 0xFF

Instance Counter: This 1-byte value tallies the

number of responses from a given Node ID.

Node ID Echo: The 1-byte LSB value indicates

the Node ID of the controller for which the

command was intended.

<IC> 0x01

Month and Day Timestamp

Hour and Minute Timestamp

Seconds Timestamp in MSB

Number of Additional Bytes Retrieved in

LSB (0x01 for error responses)

<Seconds> 0x01

Error Code: 1-byte Error Code in MSB

0x00 in LSB

<Error Code> 0x00

Table 4-4: CBx Error Response Packet Structure