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Siemens SIMATIC IM 151/CPU User Manual

Siemens SIMATIC IM 151/CPU
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Glossary
Glossary-2
ET 200S Interface Module IM 151/CPU
A5E00058783-01
Compress
The programming device online function “Compress” is used to align all valid
blocks contiguously in the RAM of the CPU at the start of the user memory. This
eliminates all gaps which arose when blocks were deleted or modified.
Consistent Data
Data that belongs together in terms of its content and should not separated is
known as consistent data.
For example, the values of analog modules must always be handled consistently.
In other words, the value of an analog module must not be corrupted by reading
it out at two different times.
Counter
Counters are part of the system memory of the CPU. The content of the
“counter cells” can by modified by
STEP 7
instructions (e.g. count up/down).
CPU
Central processing unit of the S7 programmable controller with a control unit and
arithmetic logic unit, memory, operating system and interface for a programming
device.
Cycle Time
The cycle time is the time taken by the CPU to scan the user program
once.
Data Block
Data blocks (DB) are data areas in the user program which contain user data.
Global data blocks can be accessed by all code blocks, whereas instance data
blocks are assigned to a specific FB call.
Device Database File
All the DP slave-specific properties are stored in a device database file (DDB
file). The format of the device database file is defined in EN 50170, Volume 2,
PROFIBUS.

Table of Contents

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Siemens SIMATIC IM 151/CPU Specifications

General IconGeneral
Engineering withSTEP 7
Communication ProtocolsPROFIBUS DP
Communication Interfaces1 x PROFIBUS DP
Number of DP masters1
Power Supply24 V DC
Protection ClassIP20
Compatible SystemsET 200S
Number of configurable I/O addresses128
Digital InputsDepends on configuration
Digital OutputsDepends on configuration
Analog InputsDepends on configuration
Analog OutputsDepends on configuration
Operating Temperature0°C to 60°C

Summary

Safety Guidelines

Qualified Personnel

Defines qualifications required for installing and working with the equipment.

Correct Usage

Provides notes on the proper and safe application of the device and its components.

Trademarks

Lists registered trademarks of SIEMENS AG used in the documents.

Important Information

Purpose of the Manual

Explains the manual's scope and how it supplements other ET 200S documentation.

Target Group

Identifies the intended audience for the manual, including engineers and technicians.

Delivery Package

Details the contents of the delivery package, listing the included manuals.

Applicability

States the manual's validity for specific order numbers and components of the ET 200S.

Standards, Certificates and Approvals

Lists relevant industry standards and certifications applicable to the ET 200S.

Aids to Finding Information

Describes features within the manual to help locate specific information quickly.

Product Overview

What Is the IM 151/CPU Interface Module?

Describes the IM 151/CPU's role and features within the ET 200S distributed I/O system.

Guide to the ET 200S Manuals

Helps users locate relevant information across the various manuals in the ET 200S package.

Addressing

Slot-Oriented Addressing

Explains the default method of assigning addresses based on module slots in the IM 151/CPU.

User-Defined Addressing

Describes how to manually allocate addresses within the IM 151/CPU address area.

Data Transfer with the DP Master

Details the principles of data exchange between the DP master and the ET 200S via intermediate memory.

ET 200S in the PROFIBUS Network

ET 200S in the PROFIBUS Network

Illustrates typical network configurations with DP master and multiple DP slaves.

Setting the PROFIBUS Address

Explains how to set the unique PROFIBUS address for the IM 151/CPU using DIP switches.

Network Components

Lists the necessary network components and their order numbers for PROFIBUS setup.

Functions via the Programming Device/OP

Describes how to use the programming device or OP for configuration, programming, and testing.

Commissioning and Diagnostics

Configuring the IM 151/CPU

Outlines options for configuring the IM 151/CPU as a DP slave or a stand-alone module.

Resetting the Memory of the IM 151/CPU

Provides procedures for resetting the CPU memory using the mode selector or programming device.

Commissioning and Startup of the ET 200S

Guides through the steps for initial setup and operation of the ET 200S distributed I/O system.

Diagnostics Using LEDs

Explains the status indicators (LEDs) on the IM 151/CPU for fault diagnosis.

Diagnostics via the Diagnostic Address with STEP 7

Describes using diagnostic addresses for fault analysis and error reporting in STEP 7.

Slave Diagnosis

Explains how to obtain and interpret diagnostic information from DP slaves.

Functions of the IM 151/CPU

Data for the PROFIBUS-DP

Details the Device Database (DDB) file and key features for PROFIBUS communication.

The Mode Selector and LEDs

Describes the functions of the mode selector and the various LEDs on the IM 151/CPU.

Memory Module

Explains the use of Micro Memory Cards for storing programs and firmware updates.

Parameters

Lists settable parameters for the IM 151/CPU CPU component, configurable via STEP 7.

Technical Specifications

Technical Specifications of the IM 151/CPU

Provides detailed technical data, order numbers, features, and specifications of the IM 151/CPU.

Cycle and Response Times

Cycle Time

Defines cycle time and its components, including operating system and user program execution.

Response Time

Explains response time calculation, factors affecting it, and shortest/longest times.

Interrupt Response Time

Details the time from interrupt signal occurrence to the first instruction in the interrupt OB.

Getting Started

Step 1: Installing the ET 200S/IM 151/CPU and S7-300

Guides through the physical installation of hardware components for the ET 200S and S7-300.

Step 2: Wiring the ET 200S/IM 151/CPU and S7-300

Provides instructions for electrical connections and wiring the ET 200S and S7-300 system.

Step 3: Putting the IM 151/CPU into Operation

Covers initial power-up, mode selector settings, and basic configuration steps for the IM 151/CPU.

Step 4: Configuring the IM 151/CPU for Stand-Alone Operation

Details the process of setting up the IM 151/CPU for independent operation using SIMATIC Manager.

Step 5: Programming the IM 151/CPU

Guides on programming the IM 151/CPU using the LAD/FBD/STL editor in SIMATIC Manager.

Step 6: Test Run

Details the steps for performing a test run, including block download and switch operations.

Step 7: Converting the IM 151/CPU to a DP Slave and Putting the S7-300 into Operation

Covers converting the IM 151/CPU to DP slave and integrating it with the S7-300 master.

Step 9: Programming the IM 151/CPU and the S7-300

Guides on programming both the IM 151/CPU and S7-300 for communication and data exchange.

Step 10: Commissioning and Test Run

Final steps for commissioning and testing the complete system setup, including LED status checks.

Configuration Frame and Parameter Assignment Frame for the ET 200S

Structure of the Configuration Frame (SKF)

Describes the structure of the configuration frame in the special identifier format (SKF).

Structure of the Configuration Frame (AKF)

Explains the structure of the configuration frame using the normal identifier format (AKF).

Structure of the Parameter Assignment Frame

Details the standard section and general parameters within the parameter assignment frame.

Instruction List

Address Identifiers and Parameter Ranges

Lists valid address identifiers and their corresponding parameter ranges for instructions.

Abbreviations

Provides a list of abbreviations and mnemonics used in the instruction list.

Execution Times with Indirect Addressing

Explains how to calculate execution times for instructions using indirect addressing.

Bit Logic Instructions

Details bit logic instructions like AND, OR, NOT, and their execution times.

Execution Times of the SFCs and SFBs

System Functions (SFCs)

Lists system functions with their names, descriptions, and execution times in microseconds.

System Function Blocks (SFBs)

Lists system function blocks with their names, descriptions, and execution times in microseconds.

Migration of the IM 151/CPU

Differences to Selected S7-300 CPUs

Compares programming differences between IM 151/CPU and selected S7-300 CPUs.

Porting the User Program

Guides on adapting existing programs for the IM 151/CPU, including handling packed addresses and rewiring.

Glossary

CPU

Describes the central processing unit of a programmable controller and its components.

PROFIBUS

Explains PROFIBUS as a process and field bus standard, including its protocols.

STEP 7

Defines STEP 7 as the programming language for developing user programs for SIMATIC S7 PLCs.

Index

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