Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual - Manual (Page 144)

Publication 1797-6.5.3 - March 2006
B-20 FLEX Ex HART Module Commands
Command 147
Command 147 is the Write Normal SCAN command.
Command 148
Use the Read SCAN Status command to specify the status of the SCAN
function. Where 0 = SCAN function disabled (default after you cycle power);
1 = normal SCAN function activated; and 2 = special SCAN function
activated (see Command 158 and Command 159). There are no request data
bytes.
Table B.21 Command 147 Request and Response Data Bytes
Byte Description Value
Request Data Bytes
0 SCAN_CMD Scan command 1 = Command 1
2 = Command 2
3 = Command 3
Response Data Bytes
0 SCAN_CMD Scan command 1 = Command 1
2 = Command 2
3 = Command 3
Command-specific Response Codes
2 Error Invalid selection
5 Error Too few data bytes received
16 Error Access restricted
32 Error Busy
Table B.22 Command 148 Response Data Bytes
Byte Description Value
Response Data Bytes
0 SCAN_EN General scan status 0 = All scanning
disabled
1 = Normal scan
enabled
2 = Special scan
enabled
Command-specific Response Codes
16 Error Access restricted
32 Error Busy