Spectrum Controls 1769sc-HART Modules - Manual (Page 100)

Compact IO™ Isolated HART Analog Output Module
User’s Manual 0300217-03 Rev. A
7-34
Table 7-14 (HART Pass-Through Query Command)
HART pass through command complete query - command message packet structure
Field Value Definition
HART Channel
Number 0x00 – 0x03 (1 byte) Module input
channel number for
HART command
Command Number 0x0C (1 byte) The command
number
Handle (1 byte)
1-255
The handle from
command request
reply
If the data associated with the handle is not yet available, or invalid, the following reply
message will be returned.
Table 7-15 (HART Pass-Through Query Reply NOT SUCCESS)
HART pass through command complete query - reply packet structure
Field Value Definition
Unconnected Message Header
HART Channel
Number
0x00 – 0x07 (1 byte) Module input
channel number for
HART command
Status (1 byte)
34 = DR_RUNNING
35 = DR_DEAD (bad request)
Command status
Count (2 bytes) (Command Number 0x0C) Length of Handle +
HART Response
Data in bytes (if
Success)
Handle (1 byte) The handle from
command complete
query
When data associated with the buffer becomes available, meaning a "success" response,
the reply will be formatted as follows:
Table 7-16 (HART Pass-Through Query Reply SUCCESS)
HART pass through command complete query - reply packet structure
Field Value Definition
Unconnected Message Header
HART Channel
Number 0x00 – 0x07 (1 byte) Module input
channel number for
HART command
Status (1 byte)
00 = SUCCESS
Command status
Count (1 byte) (Command Number 0x04)
(2 bytes) (Command Number 0x08, 0x0C) Length of Handle +
HART Response
Data in bytes (if
Success)
Handle 1-255 The handle from
command complete
query
HART Command
Response Data Size is the entire HART device response size
in bytes. The size does not include preambles
bytes. The HART device’s
response to the
command (if
Success)