UM AX032200 Version 1.0 9-46
1.4. Digital Output Function Blocks
There are 2 digital outputs available in the ECU.
The Digital Outputs use various control sources to drive the output, each available from the listed
sources in Table 1. The output will be controlled by these sources in the following order:
Override
Source
,
Enable Source
,
Control Source
,
Unlatch Source
. Each output must have at least the
control source active to be functional.
The following sub sections will explain in more detail the functionalities and available
setpoints/parameters.
1.4.1. Digital Output Override
The
Override Source
will determine whether the relay output will be commanded by the
Control
Source
. This Source has a higher priority than the Enable Source.
There are two different
Override Responses
in which the Override signal can be used. These
responses are listed in Table 5, where the default value is highlighted.
Value Meaning
0
Override When OFF
1
Override When ON
Table 5: Override Responses
When the
Override Response
is configured to
Override When ON
, the relay output will be
commanded according to the signal of the
Control Source/Number
by the
Override State
. If the
Override Response is set to Override When OFF, the relay output will be commanded according to
the signal of the Control Source/Number by the Override State. Table 6 shows the two possible
states for the
Override Response
.
Value Meaning
0
Override State OFF
1
Override State ON
Table 6: Override State
In case of
Override State OFF
, the relay output switches to Normally Open. If
Override State ON
is configured, the relay output changes to Normally closed.
