Siemens SIMATIC S7-300 Reference Manual page 238

Programmable logic controllers module data

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Analog Modules

Behavior on failure of the supply voltage

Failure of the supply voltage of the analog modules is always indicated by the SF

LED on the module. Furthermore, this information is made available on the module

(entry in diagnostic buffer).

Triggering of the diagnostic interrupt depends on the parameter assignment (see

Section 4.7).

Effect of Range of Values of the Analog Values

Effect of errors on analog modules with diagnostics capability

Any errors that occur can lead to a diagnostics entry and a diagnostic interrupt with

analog modules with diagnostics capability and corresponding parameter

assignment. You will find the errors that might be involved in Section 4.16.

Effect of range of values on the analog input module

The behavior of the analog modules depends on where the input values lie within

the range of values.

Table 4-39 Behavior of the Analog Input Modules as a Function of the Position of the

Overrange/und

Only for modules with diagnostics capability and depending on parameter assignment

Analog Value within the Range of Values

Programmable Logic Controllers S7-300 Module Data

A5E00105505-03

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