Rockwell Automation 1794-OF8IH FLEX Isolated Input/Output HART Analog Modules - Manual (Page 110)

Publication 1794-UM065B-EN-E - September 2010
98 FLEX I/O HART Module Commands
Universal Commands
Common Practice
Commands
Universal HART Module Commands
Command Action Meaning
0 Read Read unique device
identification Twelve-byte device identifiers are given in the response
1 Read HART variables (process
values) Commands are only supported for compatibility purposes and are without any
meaning
The transmitters, namely the SCAN function, have the following functions.
•Read primary variable
•Read primary variable as current (in mA) and percent range)
•Primary variable is read as a current (in mA) and four predefined dynamic
variables
2 — —
3 — —
11 Read unique identifier
associated with tag The response is a twelve-byte device identifier if the given tag matches the tag of
the multiplexer
12 Read message Read the 32-bit message (also see bit 17)
13 Selection switch markings in
hand, read description and date Read the eight-digit selection switch marking (tag) and the 16-digit time and date
17 Write Write message The 32-digit message is written (also see bit 12)
18 Write tag, description, and date Save an 8-digit (tag), a 16-digit description and date
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
processor is performed
48 Read Read additional device status —