Siemens Simatic M7-400, Reference Manual

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Analog Modules
5-114
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
5.22.1 Commissioning the SM 431; AI 16 16 Bit
You set the mode of operation of the SM 431; AI 16 16 Bit by means of
measuring range modules on the module and in STEP 7.
Measuring Range Module
A measuring range module of the module matches two channels and one
resistance channel to each type of sensor. If necessary, the measuring range
modules must be replugged to change the measuring method and the measuring
range. The steps you have to perform to do this are described in detail in
Section 5.4.
The corresponding table in Section 5.22.2 tells you which assignment you have to
select for which measuring method and measuring range. In addition, the
necessary settings are embossed on the module.
Parameters
You will find a description of the general procedure for assigning parameters to
analog modules in Section 5.7.
An overview of the parameters that you can set and their default settings are
shown in the table below.
Table 5-64 Parameters of the SM 431; AI 16 16 Bit
Parameter Value Range Default
2)
Parameter
Type
Scope
Enable
•
Diagnostic interrupt
1)
•
Hardware interrupt
1)
Yes/no
Yes/no No
No
Dynamic Module
•
Destination CPU for
interrupt 1 to 4 –
Static Module
Trigger for hardware
interrupt
•
End of scan cycle
reached at input
Yes/no
No Static Channel
•
High limit
•
Low limit
32511 to – 32512
– 32512 to 32511
– Dynamic Channel
Diagnostics
•
Wire break
•
Reference channel
error
•
Underflow
•
Overflow
•
Short circuit to M
Yes/no
Yes/no
Yes/no
Yes/no
Yes/no
No
No
No
No
No
Static Channel