Siemens SIMATIC ET 200iSP User Manual

13.6.3 Flutter monitoring
Description
Flutter monitoring is a process control function for digital input signals. It detects and reports
signal characteristics unusual in process engineering, e.g. too frequent 󹪞uctuation of the input
signal between "0" and "1". If signal characteristics like these occur, it is a sign that the sensors
are faulty or that there are instabilities from a process engineering viewpoint.
Activation of chatter monitoring
You activate the chatter monitoring by setting the number of signal changes for the chatter
monitoring to a value which is not "zero".
Recognizing unusual signal patterns:
Each input channel has a monitoring window that has been assigned parameters. The
monitoring window is started the 󹪝rst time upon a signal change of the input signal.
The number of signal changes is monitored in the monitoring window. The reaction of the
system depends on whether the con󹪝gured number of signal changes is reached within the
monitoring window:
• Number of signal changes is not reached.
With the next signal change the monitoring window is restarted.
• Number of signal changes is reached.
The event is recognized as chatter error.
Reporting a chatter error
If a chatter error is detected, the following occurs:
• The current signal state is entered into the process image.
• The value status of the signal is set to "invalid".
• The "Chatter error" diagnostic information is entered and an incoming diagnostic interrupt is
triggered.
The value status and the diagnostic information must be evaluated and processed in the user
program.
Resetting a chatter error
If no chatter error was detected within the triple monitoring window, the diagnostic entry is
removed and an outgoing diagnostic interrupt is triggered. The value state of the current signal
in the process image is set to "valid".
Digital electronic modules
13.6 Description of the parameters of the digital electronic modules
ET 200iSP
Operating Instructions, 11/2022, A5E00247483-AK 341

Siemens SIMATIC ET 200iSP Specifications

General

Brand	Siemens
Model	SIMATIC ET 200iSP
Category	I/O Systems
Language	English

Summary

System planning

Distributed I/O device

Explains the area of application for distributed I/O stations and their integration into automation systems.

ET 200iSP station on PROFINET IO

Describes the PROFINET IO communication concept and devices that can be connected.

ET 200iSP station on PROFIBUS DP

Explains the PROFIBUS DP standard, DP masters, and devices that can be connected.

Product overview

ET 200iSP Distributed I/O Station

ET 200iSP in the Hazardous Area

Details the properties of zones and types of protection for ET 200iSP in hazardous areas.

Configurations (principle)

Rules for operation in hazardous areas

Details rules for PROFINET and PROFIBUS configurations in hazardous zones.

Installing

Installation rules

Details safety information and general installation regulations, including in hazardous areas.

Wiring

General Rules and Regulations for Wiring

Provides an overview of important rules for integrating the ET 200iSP into plants.

Operating the ET 200iSP with equipotential bonding

Wiring the ET 200iSP

Commissioning and Diagnostics

Basics of commissioning and diagnostics

Explains the principle of configuration and the process of project engineering.

Maintenance

Activities during operation

Describes permitted activities on the ET 200iSP in hazardous locations during operation.

Pulling and plugging electronic modules during operation (hot swapping)

Replacing interface module IM 152-1PN

Power Supply

Power supply PS 24 VDC

Details article number, properties, block diagram, and technical specifications for the 24 VDC power supply.

Power supply PS 120/230 VAC

Provides article number, properties, block diagram, and technical specifications for the 120/230 VAC power supply.

Network interface module

PROFINET interface module IM 152-1PN

Explains properties, block diagram, technical specifications, and parameters for the PROFINET interface module.

PROFIBUS interface module IM 152-1DP

Details properties, block diagram, technical specifications, and approvals for the PROFIBUS interface module.

Digital electronic modules

Digital electronics module 8 DI NAMUR

Covers article number, properties, pin assignment, and technical specifications for the 8 DI NAMUR module.

Digital electronics module 4 DO

Digital electronic module 2 DO Relay UC60V/2A

Analog electronic modules

Analog electronics module 4 AI I 2WIRE HART

Analog electronics module 4 AI I 4WIRE HART

Analog electronics module 4 AI RTD

Analog electronics module 4 AI TC

Analog electronics module 4 AO I HART

Appendix

Lightning and overvoltage protection

Discusses causes of failure due to overvoltages and protection concepts.