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Siemens Simatic S7-400 User Manual

Page 249

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Analog Modules

5-33

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

Effect of Range of Values on the Analog Output Module

The behavior of the analog modules depends on where the output values lie within
the value range.

Table 5-40 Behavior of the Analog Output Modules as a Function of the Position of the

Analog Value Within the Range of Values

Process Value

Lies Within

Output Value

LED

(EXTF)

Diagnostics

Interrupt

Rated range

CPU value

Overrange/und
errange

CPU value

Overflow

0 signal

Underflow

0 signal

5.5.3

Effect of Operational Limit and Basic Error Limit

Operational Limit

The operational limit is the measuring error or output error of the analog module
over the entire temperature range authorized for the module, referred to the rated
range of the module.

Basic Error Limit

The basic error limit is the operational limit at 25

°

C, referred to the rated range of

the module.

Note

The percentage details of operational and basic error limits in the technical
specifications of the module always refer to the highest possible input and output
value in the rated range of the module.

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