Pepperl+Fuchs KFD2-HMM-16 Manual page 25

Bit
7 6 5 4 3 2 1 0
1
1 1
1 1
1 1
1 1
1 0
1
1
Details can be found in /1/.
Command responses
The first byte contains information relating to the execution of a command. The command-specific response
code thus documents the execution of the command.
In contrast to the communication error, the command responses are not coded bit by bit, but are numbered
consecutively from 0 to 127.
Of the command responses signalled by the multiplexer, two instances are warnings (codes 8 and 31), in
which the processing of the command is continued. In the other cases, errors are indicated, that means that
the initiating command could not be correctly executed. Here, the remedy is given by the meaning of the
code.
All the codes that occur on the HART system are described in /1/.
The following response codes can occur on the multiplexer:
Code
2 Invalid selection
3 The parameter value was
too large
4 The parameter value was
too small
5 Too few data bytes received The message has no error, but it contains
8 Warning
9 1st parameter too large
11 2nd parameter too large
16 Access restricted
Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group • Tel.: Germany (06 21) 7 76-0 • USA (330) 4 25 35 55 • Singapore 7 79 90 91 • Internet http://www.pepperl-fuchs.com
Communication error, if bit 7 = 1; coded bit by bit
Parity error
Overrun error
Message error
Checksum error
Always 0 (reserved)
1 Input buffer overrun
1 (undefined)
Description
The selected code/index is not permissible.
fewer bytes than expected for the execution
of the command.
Here (132): Preamble length not within
range 5 ... 20 and has been set to 5 or 20.
The first of the two parameters is too large.
The second of the two parameters is too
large.
The command has been ignored, since the
current device status does not permit the
command to be carried out correctly.
HART Multiplexer Master KFD2-HMM-16
Diagnosis and Fault Elimination
Meaning
Meaning
Copyright Pepperl+Fuchs, Printed in Germany
Can occur with
commands ...
147, 149, 151, 153
59, 129, 155
59
17, 18, 59,
129 ... 141, 145, 147,
149, 151, 153, 154,
155, 157
132
145
145
6, 17, 18, 38, 41, 42,
48, 59, 106,
128 ... 157
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