Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual - Manual (Page 145)

Publication 1797-6.5.3 - March 2006
FLEX Ex HART Module Commands B-21
Command 149
Command 149 is the Write SCAN Status command.
Command 152
The Read Loop Search Type command determines the polling address used to
search for a device that has not responded after multiple requests
(disappeared). Also see Command 129. The HART I/O module has a fixed
setting where 1 = single transmitter, unknown (single unknown) short
addresses of 0 to 15. There are no request data bytes.
Table B.23 Command 149 Request and Response Data Bytes
Byte Description Value
Request Data Bytes
0 SCAN_EN General scan enable/disable 0 = All scanning
disabled
1 = Normal scan
enabled
2 = Special scan
enabled
Response Data Bytes
0 SCAN_EN Scan enable/disable 0 = All scanning
disabled
1 = Normal scan
enabled
2 = Special scan
enabled
Command-specific Response Codes
2 Error Invalid selection
5 Error Too few data bytes received
16 Error Access restricted
32 Error Busy
Table B.24 Command 152 Response Data Bytes
Byte Description Value
Response Data Bytes
0 LOC_MET Locate method 0 = Single analog
Command-specific Response Codes
16 Error Access restricted
32 Error Busy