Printed in the Federal Republic of Germany
TR-Electronic GmbH 2016, All Rights Reserved
10/31/2018
TR - ECE - BA - DGB - 0131 - 02
Page 103 of 103
7.2.2.17 Serial number
Extended diagnosis, byte 48 - 57
The diagnostic bytes indicate the serial number of the measuring system. If this
function is not supported, asterisks are used (hexadecimal code 0x2A) **********
7.2.2.18 Manufacturer-specific diagnostics
The measuring system does not support any other manufacturer-specific diagnostics.
According to the PNO encoder profile, an measuring system must set the bits
"Ext.diag"
(extended diagnostic information available) and
"Stat.diag"
(static error)
in the event of an internal error being detected in the station status. This means that,
in case of error, the measuring system stops providing position data and is removed
from the process image by the PROFIBUS master until the error bits are reset. It is
not possible for the user to acknowledge the error via the PROFIBUS in this way.
This function is only guaranteed provided the
"Commissioning diagnostics"
function is activated.
7.3 Other faults
Fault
Cause
Remedy
measuring system
step changes
Strong vibrations
Vibrations, shocks and jolts, e.g. on presses, are
cushioned by so-called "shock modules". If the error
persists despite these precautions, the measuring system
must be replaced.
Electrical faults
EMC
Electrical faults can be countered by means of insulating
plastic flanges and couplings, and by data and power
supply cables with twisted-pair conductors. The screening
and wiring arrangement must conform to the assembly
guidelines for PROFIBUS.
Excessive axial and
radial loading of shaft
or scanning defect.
Couplings prevent mechanical strain on the shaft. If the
error persists despite this precaution, the measuring
system must be replaced..
Profibus operates
when the measuring
system
is not
connected, but
indicates a fault when
the bus cover is
mounted on the
measuring system
PROFIBUS Data-A
and Data-B reversed
Inspect all connections and conductors relating to the
wiring of the measuring system.
