Access to the safety-oriented data channel
TR-Electronic GmbH 2016, All Rights Reserved
Printed in the Federal Republic of Germany
Page 156 of 159
TR - ECE - TI - DGB - 0292 - 01
09/20/2016
6.2.1.3 ACK_REI
If a communication error is detected by the F-System for the measuring system, a
passivation of the measuring system is performed.
For an user acknowledgment in the measuring system after elimination of errors, a
positive edge at the tag
ACK_REI
of the F-IO data block is required, which is linked to
the memory bit
M0.0
, symbol name "
Tag_1
" in the example project.
An user acknowledgment is required:
● After communication errors
● after the start-up phase
An acknowledgement is only possible if the tag
ACK_REQ
= 1.
An user acknowledgment must be provided for each F-IO in the safety program via the
tag
ACK_REI
. This requirement has already been taken into account for the
measuring system.
6.2.1.4 IPAR_EN
The variable
IPAR_EN
is used to execute a preset adjustment function. The process
sequence for execution of this function is described in the device-specific user
manual.
A tag description of when the tags must be set/reset during a re-parameterization of
fail-safe DP standard slaves/IO standard devices can be found in the
PROFIsafe
Specification
from
V1.20
, or the documentation on the fail-safe
DP standard slave/IO
standard device
.
No passivation of the measuring system is triggered by
IPAR_EN
= 1!
With reference to the preset execution, the warning information contained in the
device-specific user manual must be observed!
6.2.1.5 PASS_OUT/QBAD
The tags
PASS_OUT
= 1 and
QBAD
= 1 indicate that a passivation of the measuring
system is present.
The F-System sets
PASS_OUT
and
QBAD
= 1, as long as the measuring system
outputs substitute values (0) instead of the cyclical values.
If a passivation is performed via the tag
PASS_ON
= 1, however, only
QBAD
= 1 is set.
PASS_OUT
does not change its value for a passivation via
PASS_ON
= 1.
PASS_OUT
can therefore be used for the group passivation of further F-IOs.
