Kuhnke Electronics Instruction Manual

5.3.4 Short-circuited Output
Software
Overload fuses out the outputs thermally. This section
describes an extra, software-controlled short circuit
monitoring which is available for normal outputs but not
for clock pulse outputs, though.
5.3.4.1 Combi Outputs di0...do3 (SO_0...SO_3)
A short-circuited output is turned off by the PLC. To undo
the switch-off you must first restart the PLC or choose
Online-CoDeSys-Reset. The short circuit error indicated
by the error LED will be reset only when you restart the
controller.
Getting the input states back from the inputs allows you to
check the PLC program for the output that was actually
short-circuited.
Getting the input states back from the inputs allows you
to check the PLC program for the output that was actually
short-circuited.
5.3.4.2 Digital Outputs of the Basic Module
A short-circuited output is turned off by a thermal fuse.
5.3.4.3 Interrupt Following Short Circuit
A short circuit to do0 ... do3 will generate an interrupt
request to the PLC. To allocate program code to the
interrupt request run function INSTALL_ERROR_IRQ
(� 4.4.6)
The module should contain the code to respond to the
request, e.g. to turn off some major or all outputs using
function ENADIS_OUTPUTS (� 4.4.3)
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