Spectrum Controls 1769sc-IF4IH User Manual page 105

User' s Manual 0300215-03 Rev. A
Chapter 7: Enabling and Using HART on the 1769sc-IF4IH0
Table 7-16 (HART Pass-Through Query Command)
HART pass through command complete query - command message packet structure
Field
HART Channel
Number
Command Number
Handle
If the data associated with the handle is not yet available, or invalid, the following reply
message will be returned.
Table 7-17 (HART Pass-Through Query Reply NOT SUCCESS)
HART pass through command complete query - reply packet structure
Field
Unconnected Message Header
HART Channel
Number
Status
Count
Handle
When data associated with the buffer becomes available, meaning a "success" response,
the reply will be formatted as follows:
Table 7-18 (HART Pass-Through Query Reply SUCCESS)
HART pass through command complete query - reply packet structure
Field
Unconnected Message Header
HART Channel
Number
Status
Count
Handle
HART Command
Response Data
Value
0x00 – 0x03 (1 byte)
0x0C (1 byte)
(1 byte)
1-255
Value
0x00 – 0x07 (1 byte)
(1 byte)
34 = DR_RUNNING
35 = DR_DEAD (bad request)
(2 bytes) (Command Number 0x0C)
(1 byte)
Value
0x00 – 0x07 (1 byte)
(1 byte)
00 = SUCCESS
(1 byte) (Command Number 0x04)
(2 bytes) (Command Number 0x08, 0x0C)
1-255
Size is the entire HART device response size
in bytes. The size does not include preambles
bytes.
7-37
Definition
Module input
channel number for
HART command
The command
number
The handle from
command request
reply
Definition
Module input
channel number for
HART command
Command status
Length of Handle +
HART Response
Data in bytes (if
Success)
The handle from
command complete
query
Definition
Module input
channel number for
HART command
Command status
Length of Handle +
HART Response
Data in bytes (if
Success)
The handle from
command complete
query
The HART device's
response to the
command (if
Success)