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Digital modules
4.3 Assigning parameters to digital modules
S7-400 Automation System Module Data
Reference Manual, Edition 09/2009, A5E00850736-06
97
4.3.2 Parameters of digital input modules
Overview
The configurable digital input modules use a subset of the parameters and ranges of values
listed in the table below, depending on functionality. For information on subsets "supported"
by specific digital modules, refer to the chapter dealing with the relevant module. Do not
forget that some digital modules have different input delays after parameter assignment.
The defaults apply if you have not set any parameters in
STEP 7
.
Table 4- 4 Parameters of digital input modules
Parameters Value range Default
2
Parameter
type
Scope
Enable
Diagnostic interrupt
1
Yes/no No
Hardware interrupt
1
Yes/no No
Dynamic Module
Destination CPU for
interrupt
1 to 4 - Static Module
Diagnostics
Wire break
Yes/no No
No load voltage L+/sensor
supply
Yes/no No
Static Channel
Hardware interrupt trigger
Positive edge
Yes/no No
Negative edge
Yes/no No
Dynamic Channel
Input delay 0.1 ms (DC)
0.5 ms (DC)
3 ms (DC)
20 ms (DC/AC)
3 (DC) Static Channel
Reaction to error Set substitution
value (SSV)
Keep last value
(KLV)
SV Dynamic Module
Set substitution value "1" Yes/no No Dynamic Channel 3
1
If you use the module in ER-1/ER-2, you must set this parameter to "No" because the interrupt lines
are not available in ER-1/ER-2.
2
Only in the CR (central rack) is it possible to start up the digital modules with the default settings
and without support from HWCONFIG.
3
Channels not selected for substitute value "1" are assigned substitute value "0".
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