7 Diagnostic Properties of the
Modules
7.1 Channel Error
7 Diagnostic Properties of the
Modules
The modules provide advanced diagnosis behavior, in particular for the output
channels to determine errors in the transmission. The firmware of the modules
differentiates between five distinct types of error.
7.1 Channel Error
A channel error is determined by comparing the target value set by a controller
and the actual value of the output channel.
Target value
Actual value
Comment
Active
Active
OK, no diagnosis
Off
Off
OK, no diagnosis
Active
Off
Short circuit, channel indicator
is red. Channel error bit in the
diagnosis is set. Channel is
locked after error is removed.
Off
Active
Voltage fed back in, red and
yellow/white channel indicators
are activated. Channel error bit
in the diagnosis is set.
Table 25: Interpretation of channel errors
Attention:
If both output channels of an M12 slot are activated when
a channel error occurs, the controller locks both channels, even if only
one channel is affected by the error. If only one channel is activated,
the controller only locks this one. Locked channels are deactivated
and remain in the Off state if you do not reset them using the controller.
When an output channel is activated (rising edge of the channel state) or
deactivated (falling edge), the channel errors are filtered for the period that
you set using the "Surveillance Timeout" parameter during the configuration
Technical Manual LioN-P PROFINET
Version 2.0 10/2017
47