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JX2-PROFI1
7.6.2
The transmission of diagnose telegrams can be started by issuing certain
commands:
7.6.3
When the PROFIBUS-DP master's point of view is taken, please note that the user
data of the diagnose telegrams of the PROFIBUS module are always device specific.
The first four user bytes of a diagnose telegram contain a header according to the
DPV1 expansions. The transmitted user diagnose data will not be saved before the
5th byte (or, if the 6 bytes according to the DP standard are considered, they will not
be saved before the 11th byte). This must also be taken into account, if the telegram
length in the master is to be evaluated.
50
Commands for the Transmission of
Diagnose Data
Command
Number
7
Transmit a status diagnose telegram:
This telegram is transmitted either with or without user
data, depending on the defined length.
8
Transmit an extended diagnose telegram:
This telegram must always contain diagnose data of the
user. The user should transmit a status diagnose telegram
when the cause of the diagnose has been removed. For
this purpose, the data length must be >10.
9
The module is set into the state of static diagnose: In this
state, no data will be exchanged with the master in cyclic
mode any more. The master will only query the diagnose
telegrams of the slave, which is necessary in case there
are no valid data to be supplied.
The static diagnose mode can be left by transmitting a
status diagnose or by applying an extended diagnose.
10
The transmission of the latest diagnose telegram is
interrupted.
Transmission of Diagnose Data from the
Master's Point of View
7 The Services
Meaning
Jetter AG
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