Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual - Manual (Page 127)

Publication 1797-6.5.3 - March 2006
FLEX Ex HART Module Commands B-3
Common Practice
Commands
Device-specific Commands The following commands provide device-specific information on the HART
I/O modules.
Command 128
Command 128 is Read Parameter Assignment of the Multiplexer. There are no
request data bytes.
Table B.2 Common Practice HART Module Commands
Command Action Meaning
38 Write Reset configuration changed
flag Delete status information.
41 Perform device self-test Performs the device self-test
similar to turning on the power
supply.
If no error occurs, the malfunction
status message is deleted (if it had
been set).
42 Perform device reset Immediately after the command is
confirmed, a reset of the device
HART controller is performed.
48 Read Read additional device status —
Table B.3 Command 128 Response Data Bytes
Byte Description Value
Response Data Bytes
0 MAX_DR_PM Max delayed response for primary master 1
1 MAX_DR_SM Max delayed response for secondary
master 0
2 NUM_DR_PM Delayed response in use for primary
master —
3 NUM_DR_SM Delayed response in use for secondary
master
4 CH_SIGN Physical signalling on HART channels 0 = BELL 202
5 MAX_CH Max number of HART channels 8
6…7 MAX_INST Max number of HART instruments 8
8…9 NUM_INST Number of HART instruments in the list —
10…11 NUM_SCAN Number of HART instruments scanned
12 MODE Master bit and timing 1 = Primary