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Parameters
The following table summarizes the parameters that you can set for the expansion
module.
In Section 5.4 you will find the parameterizable diagnostics and in Section 5.5 you
will find an in-depth description of diagnostic and hardware interrupt handling. You
can find the layout of the parameter assignment frame and the assignment of the
bits including the parameters of the digital outputs in the configuration and
parameter assignment frame for the ET 200X at
http://www.ad.siemens.de/simatic-cs.
Table 7-28 Parameters of the EM 142 DO 4 x DC 24V/2A
Parameters
Enable
S
Diagnostic interrupt
Diagnosis
S
Wire break
S
Short-circuit to M
S
Short-circuit to L+
Behavior upon CPU
STOP
Substitute value*
*
Substitute values are current or voltage values that are output upon STOP of the master CPU by the
expansion module to the process.
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
Range
Yes/no
Yes/no
Yes/no
Yes/no
Set substitute value/
maintain last value/no
current or voltage
0/1
Default
No
No
No
No
No current or voltage
0
Technical Specifications
Area affected
Expansion module
Channel
Channel
Channel
7-59
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