Appendix; Supported Commands - Pepperl+Fuchs KFD HM 16 Series Manual

HART Multiplexer System KFD*-HM*-16

Appendix

9 Appendix
9.1

Supported commands

9.1.1 Universal commands
Command Action
0 Read unique identifier.

Read HART variables (process
values).

1

2
3

Write polling address.
6

Read unique identifier associated
11

with tag.
12 Read "Message".

13 Read tag, description and date.

17 Write "Message".

18 Write tag, description and date.

The following tables show the HART commands supported by the Multiplexer,
ordered by three groups (see also section 3.2):
• Universal commands,
• Common-practice commands and
• Device specific commands.
The read commands are caracterized by  and the write commands by .
The Universal and Common-practice commands are described in detail in /1/. In this
section only the functions are explained, not the data structure of the lower layer of
the HART protocol.
Meaning
12 Bytes device identifier are given in the response.
Commands are only supported for compatibility purposes
and are without any meaning. Used with transmitters (e. g.
SCAN function) they have the following meanings:
1: Read primary variable.
2: Read primary variable as current (in mA) and percent of
3: Read primary variable as current (in mA) and four
This command is never accepted and the messages
"Access restricted" or "Busy" will be returned.
A response will contain 12 bytes device identifier, if the given
tag complies to the tag of the Multiplexer.
Read the 32 digit message (see also 17).
Read the 8 digit tag, the 16 digit description and the date.
Write the 32 digit message (see also 12).
Write the 8 digit tag, the 16 digit description and the date.
range.
(predefined) dynamic variables.
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