
Glossary-4
ET 200S IM 151-7 CPU Interface Module
A5E00058783-04
DP Slave
A slave on the PROFIBUS bus system with the PROFIBUS-DP protocol that
complies with IEC 61784-1:2002 Ed1 CP 3/1 is referred to as a DP slave.
DP Standard
The DP standard is the bus protocol of the ET 200 distributed I/O system based
on IEC 61784-1:2002 Ed1 CP 3/1.
DPV1
DPV1 designates the functional expansion of the acyclic utilities (e.g. with new
alarms) of the DP protocol. The DPV1 functionality is integrated in the
IEC 61784-1:2002 Ed1 CP 3/1 standard.
Error Handling via OB
If the operating system detects a specific error (e.g. an access error in the case
of STEP 7), it calls the organization block (error OB) provided for this event that
specifies the subsequent behavior of the CPU.
Error message
An error message is one of the possible responses of the operating system to a
runtime error. The other possible responses are: error response in the user
program, STOP mode of the CPU.
Error Response
Response to a runtime error. The operating system can respond in the
following ways: conversion of the programmable controller to STOP mode, call of
an organization block in which the user can program a response, or display of
the error.
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