Diagnostics processing
48
7.1 Output channel error
Technical manual LioN-P EtherCAT® Digital-I/O
Release 1.0 11/2016
7
Diagnostics processing
The modules provide advanced diagnosis behavior, especially for the output
channels. The firmware of the modules distinguish between 5 different types
of error.
7.1
Output channel error
A channel error is determined by comparing the target value set by a
controller and the actual value of an output channel.
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
of the module. The value of this parameter can range from 0 to 255 ms; the
factory setting is 80 ms.
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 the error is rectified.
Off
Active
Voltage is fed back in
Red and yellow/white channel indicators are activated
Channel error bit in the diagnosis is set
Channel is not locked after the error is rectified
Table 44: Interpretation of channel errors
NOTE
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.
