Name: Siemens SIMATIC S7-300 Module data
Brand: Siemens
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Glossary

Glossary-10

Programmable Logic Controllers S7-300 Module Data

A5E00105505-03

Temperature errors of internal compensation

The temperature error of internal compensation only occurs during thermocouple

measurement. It identifies the additional error which is to be taken into account

and added to the actual temperature error when “internal comparison” mode is

selected. The data is either given as a percentage relative to the physical rated

range of the analog module or as an absolute value in °C.

Two-conductor/three-conductor/four-conductor connection

Method of connection to the module – for example, of resistance thermometers/

resistors to the front connector of the analog input module or of loads at the volt-

age output of an analog output module.

Two-wire transmitter/four-wire transmitter

Kind of transmitter (two-wire transmitter: supply (via terminals of the analog input

module; 4-wire transmitter: supply via separate terminals of the transmitter)

Ungrounded

Without galvanic connection to ground

User program

The user program contains all the statements, tags and data for signal process-

ing used to control a system or a process. It is assigned to a programmable

module (CPU, FM, for example) and can be structured in smaller units (blocks).

Wire-break

Parameter in STEP 7. A wire-break test is used for monitoring the connection

from the input to the encoder and from the output to the actuator. With wire-

break, the module detects a flow of current at the appropriately parameterized

input/output.

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