Rockwell Automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Modules - Manual (Page 128)

Publication 1794-UM065B-EN-E - September 2010
116 FLEX I/O HART Modules Network Messaging
Response from the HART Command
The six header bytes are added in the front of the HART message response
while the remaining format is unchanged. These six bytes contain the
following information:
• Response Source
• Next Assembly
Pointer to assembly for next access.
• Channel
The actual channel to which actual contents are related.
• Handle
This indicates the Handle of the response.
Status
(6 Bytes) Start
Character Address Command Byte Count (Response
Code) Data Checksum
Byte 0 1 2 3 4 5
Bit 0…2 3…7 0…7 0…7 0…7 0…3 4 5 6 7 0 1 2…7
Resp
Source Next assy index Ch Handle Resp
Error Assy
Access
Error Chain
Data Req
allow Loop
status
avail Lock Cold
Start Res
Value Meaning
0 Not valid (default)
1 Source is HART response
2 Source is Scan data
3 CMD 48 response
4…7 Reserved
Value Meaning
0…7 Channel of I/O module
0x20 FLEX I/O HART module itself