User Manual

Compact IO™ Isolated HART Analog Output Module
User’s Manual 03 00217-03 Rev. A
7-34
Table 7-14 (HART Pass-Throu gh Quer y Command)
HART pass through command comple te que ry - 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 fo llowing reply
message will be returned.
Table 7-15 (HART Pass-Through Query Reply NOT SUCCE SS )
HART pass through command comple te query - reply packet struc ture
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 comple t e
query
When data associated with the buffer becomes available, meaning a "success" response,
the reply will be formatted as follows:
Table 7-16 (HART Pas s -Through Query Repl y SUC CESS)
HART pass through command comple te query - reply packet struc ture
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 comple t e
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)