Troubleshooting and diagnosis options
Printed in the Federal Republic of Germany
TR-Electronic GmbH 2008, All Rights Reserved
06/19/2012
TR - ECE - BA - DGB - 0068 - 01
Page 101 of 109
8 Troubleshooting and diagnosis options
8.1 Optical displays, LEDs
Statuses of the green LED (Bus Run)
Green LED
Cause
Remedy
Off
Voltage supply absent
Check voltage supply wiring
Station address incorrectly set
Set station address (valid values 3-99 !)
Bus hood not correctly connected
and screwed on
Check bus hood for correct fitting
Bus hood defective
Replace bus hood
Hardware fault,
measuring system defective
Replace measuring system
10 Hz
Non-recoverable parameter or
configuration error, e.g.:
internal memory error
Preset adjustment value out
of measuring range
Position error (Gear)
The measuring system is running
at the bus.
Check parameterization and configuration,
see chap. 7 from page 74
Valid adjustment value = programmed total
measuring length in increments
– 1,
within 16 777 216
Replace measuring system
1 Hz
Parameterization or configuration
error in PNO-compatible nominal
configuration.
E.g. if the parameter “Number of
revolut
ions” is not a power of 2.
The data have been corrected
automatically, the measuring
system is running at the bus.
Check configuring and operational status of
PROFIBUS master
Check parameter data of the PNO-compatible
nominal configurations, see chap. 7 from page 74
On
Measuring system ready for
operation
Statuses of the red LED (Bus Fail)
Red LED
Cause
Remedy
Off
No error, bus in cycle
1 Hz
Measuring system has not been
addressed by the master, no
Data Exchange
Check station address set
Check projection and operating status of the
PROFIBUS master
Check connection to the master
On
Non-recoverable
measuring system fault, e.g.:
Preset value for the external
preset inputs
Preset1/Preset2 out of
measuring range.
The measuring system is not
running at the bus.
Check parameter data, see chap. 7 from page 74
Valid preset value = programmed total measuring
length in increments
– 1,
within 16 777 216
