TR-Electronic 65 Serie Montageanleitung Seite 175

7.6 Integration of organization blocks (OBs)
If the SIEMENS SIMATIC S7 automation system is used, a number of so-called
"organization blocks" are available to the user.
Organization blocks form the interface between the CPU operating system and the
user program. With the aid of OBs program sections can be specifically executed, e.g.
when errors or process alarms occur.
Organization blocks are processed according to the priority assigned to them.
In principle the controller CPU goes into the STOP operating state in the event of an
error, unless the corresponding OB has been integrated. This is not always desirable
and can be prevented by integrating the corresponding OB. The OB need not have
been expressly programmed for this purpose. The OB only needs to be programmed
accordingly if a specific error reaction is required.
For more detailed information on organization blocks please see the SIEMENS
documentation
6ES7810-4CA08-8AW1,
Volume 1/2"
7.6.1 Diagnostic alarm OB (OB 82)
This OB is generally triggered when the measuring system transmits a diagnostic
alarm to the controller, see chapter "PROFINET Diagnostic alarm" on page 126.
7.7 Other faults
Fault
Position skips
of the measuring
system
Printed in the Federal Republic of Germany
04/25/2022
"System and
Cause Remedy
Vibrations, impacts and shocks, e.g. on presses, are
dampened with "shock modules". If the error recurs
Strong vibrations
despite these measures, the measuring system must be
replaced.
Perhaps isolated flanges and couplings made of plastic
help against electrical faults, as well as cables with twisted
Electrical faults pair wires for data and supply. The shielding and line
EMC routing must be executed in accordance with the
Equipment Mounting Directives for the respective field bus
system.
Extreme axial and
Couplings prevent mechanical stress on the shaft. If the
radial load on the
error still occurs despite these measures, the measuring
shaft may result in a
system must be replaced.
scanning defect.
TR-ECE-BA-DGB-0063 v15
Standard Functions
 TR-Electronic GmbH 2007, All Rights Reserved
for S7-300/400
Page 131 of 131