Siemens SIMATIC ET 200S User manual

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Technological Functions
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SIMATIC
ET 200S
Technological Functions
Operating Instructions
06/2010
A5E00124867-07
Preface 1
1Count24V
2
1Count5V
3
1SSI
4
2PULSE
5

Legal information
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
with a safety alert symbol, indicates that minor personal injury can result if proper precautions are not taken.
CAUTION
without a safety alert symbol, indicates that property damage can result if proper precautions are not taken.
NOTICE
indicates that an unintended result or situation can occur if the corresponding information is not taken into
account.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation for the specific task, in particular its warning notices and
safety instructions. Qualified personnel are those who, based on their training and experience, are capable of
identifying risks and avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be adhered to. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of the Siemens AG. The remaining trademarks in this
publication may be trademarks whose use by third parties for their own purposes could violate the rights of the
owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
Siemens AG
Industry Sector
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E00124867-07
Ⓟ06/2010
Copyright © Siemens AG 2010.
Technical data subject to change

Technological Functions
Operating Instructions, 06/2010, A5E00124867-07 3
Table of contents
1 Preface ...................................................................................................................................................... 7
2 1Count24V................................................................................................................................................. 9
2.1 Product Overview...........................................................................................................................9
2.2 Isochronous Mode .......................................................................................................................12
2.3 Brief instructions on commissioning the 1Count24V ...................................................................13
2.4 Terminal Assignment Diagram.....................................................................................................16
2.5 Operating modes and application areas of the 1Count24V.........................................................17
2.6 Count Modes................................................................................................................................19
2.6.1 Overview ......................................................................................................................................19
2.6.2 Endless Counting.........................................................................................................................21
2.6.3 Once-Only Counting ....................................................................................................................23
2.6.4 Periodic Counting.........................................................................................................................26
2.6.5 Behavior of the Digital Input.........................................................................................................29
2.6.6 Gate Functions in Count Modes ..................................................................................................30
2.6.7 Latch Function .............................................................................................................................32
2.6.8 Synchronization............................................................................................................................35
2.6.9 Behavior Types of the Outputs in Count Modes..........................................................................37
2.6.10 Assignment of the Feedback and Control Interface for the Count Modes...................................45
2.6.11 Parameter Assignment for the Count Modes...............................................................................52
2.7 Measurement Modes ...................................................................................................................54
2.7.1 Overview ......................................................................................................................................54
2.7.2 Sequence of continuous-action measurement ............................................................................55
2.7.3 Frequency measurement with integration time............................................................................59
2.7.4 Continuous Frequency Measurement..........................................................................................61
2.7.5 Rotational speed measurement with integration time..................................................................63
2.7.6 Continuous Rotational Speed Measurement...............................................................................65
2.7.7 Period measurement with integration time ..................................................................................67
2.7.8 Continuous Period Measurement ................................................................................................69
2.7.9 Gate Functions in Measurement Modes......................................................................................72
2.7.10 Behavior of the Output in Measurement Modes ..........................................................................73
2.7.11 Assignment of the Feedback and Control Interfaces for the Measurement Modes ....................75
2.7.12 Parameter Assignment for Measurement Modes ........................................................................82
2.8 Fast mode ....................................................................................................................................84
2.8.1 Overview ......................................................................................................................................84
2.8.2 Fast mode ....................................................................................................................................85
2.8.3 Gate function in the case of fast mode ........................................................................................85
2.8.4 Synchronization............................................................................................................................86
2.8.5 Assignment of feedback interface for fast mode..........................................................................87
2.8.6 Assigning parameters for fast mode ............................................................................................89

Table of contents
Technological Functions
4 Operating Instructions, 06/2010, A5E00124867-07
2.9 Position feedback........................................................................................................................ 90
2.9.1 Overview ..................................................................................................................................... 90
2.9.2 Position Detection ....................................................................................................................... 92
2.9.3 Gate Functions for Position Detection ........................................................................................ 93
2.9.4 Latch Function............................................................................................................................. 96
2.9.5 Synchronization........................................................................................................................... 99
2.9.6 Assignment of the Feedback and Control Interface for Position Feedback.............................. 101
2.9.7 Assigning Parameters for Position Feedback........................................................................... 107
2.10 Evaluation of count and direction signal ................................................................................... 108
2.11 Diagnostics................................................................................................................................ 111
2.11.1 Diagnostics using the LED display............................................................................................ 111
2.11.2 Error types................................................................................................................................. 112
2.12 Behavior at CPU-Master-STOP ................................................................................................ 113
2.13 Technical Specifications............................................................................................................ 115
3 1Count5V............................................................................................................................................... 119
3.1 Product Overview...................................................................................................................... 119
3.2 Clocked Mode ........................................................................................................................... 122
3.3 Brief instructions on commissioning the 1Count5V .................................................................. 123
3.4 Terminal Assignment Diagram.................................................................................................. 126
3.5 Operating modes and application areas of the 1Count5V ........................................................ 127
3.6 Count Modes............................................................................................................................. 129
3.6.1 Overview ................................................................................................................................... 129
3.6.2 Endless Counting ...................................................................................................................... 131
3.6.3 Once-Only Counting.................................................................................................................. 133
3.6.4 Periodic Counting...................................................................................................................... 136
3.6.5 Behavior of the Digital Inputs .................................................................................................... 138
3.6.6 Gate Functions in Count Modes ............................................................................................... 139
3.6.7 Latch Function........................................................................................................................... 141
3.6.8 Synchronization......................................................................................................................... 143
3.6.9 Behavior of the Outputs in Count Modes.................................................................................. 147
3.6.10 Assignment of the Feedback and Control Interface for the Count Modes................................ 155
3.6.11 Parameter Assignment for the Count Modes............................................................................ 163
3.7 Measurement Modes ................................................................................................................ 165
3.7.1 Overview ................................................................................................................................... 165
3.7.2 Sequence of continuous-action measurement.......................................................................... 166
3.7.3 Frequency measurement with integration time......................................................................... 170
3.7.4 Continuous Frequency Measurement....................................................................................... 172
3.7.5 Rotational speed measurement with integration time............................................................... 175
3.7.6 Continuous Rotational Speed Measurement ............................................................................ 177
3.7.7 Period measurement with integration time................................................................................ 180
3.7.8 Continuous Period Measurement ............................................................................................. 182
3.7.9 Gate Functions in Measurement Modes ................................................................................... 185
3.7.10 Behavior of the Outputs in Measurement Modes ..................................................................... 186
3.7.11 Assignment of the Feedback and Control Interfaces for the Measurement Modes.................. 188
3.7.12 Parameter Assignment for Measurement Modes ..................................................................... 195

Table of contents
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07 5
3.8 Fast mode ..................................................................................................................................197
3.8.1 Overview ....................................................................................................................................197
3.8.2 Fast mode ..................................................................................................................................198
3.8.3 Gate function in the case of fast mode ......................................................................................198
3.8.4 Synchronization..........................................................................................................................199
3.8.5 Assignment of feedback interface for fast mode........................................................................201
3.8.6 Assigning parameters for fast mode ..........................................................................................203
3.9 Position feedback.......................................................................................................................204
3.9.1 Overview ....................................................................................................................................204
3.9.2 Position detection.......................................................................................................................206
3.9.3 Gate Functions for Position Detection .......................................................................................207
3.9.4 Latch Function ...........................................................................................................................210
3.9.5 Synchronization..........................................................................................................................213
3.9.6 Assignment of the Feedback and Control Interface for Position Feedback ..............................215
3.9.7 Assigning Parameters for Position Feedback............................................................................221
3.10 Evaluation of count and direction signal ....................................................................................222
3.11 Diagnostics.................................................................................................................................224
3.11.1 Diagnostics using the LED display ............................................................................................224
3.11.2 Error types..................................................................................................................................225
3.12 Behavior at CPU-Master-STOP.................................................................................................226
3.13 Technical Specifications ............................................................................................................228
4 1SSI....................................................................................................................................................... 231
4.1 Product Overview.......................................................................................................................231
4.2 Isochronous Mode .....................................................................................................................233
4.3 Example: Starting 1SSI..............................................................................................................234
4.4 Terminal Assignment Diagram...................................................................................................237
4.5 Configuring standard mode and fast mode................................................................................239
4.6 Functions of the 1SSI.................................................................................................................240
4.6.1 Overview of 1SSI functions........................................................................................................240
4.6.2 Encoder Value Detection ...........................................................................................................241
4.6.3 Gray/Binary Converter ...............................................................................................................242
4.6.4 Transmitted Encoder Value and Standardization ......................................................................242
4.6.5 Detection of Direction and Reversal of the Direction of Rotation ..............................................244
4.6.6 Comparator (Only in Standard Mode)........................................................................................245
4.6.7 Latch Function (Only in Standard Mode)...................................................................................247
4.6.8 Error Detection in Standard Mode .............................................................................................249
4.6.9 Error Detection in Fast Mode.....................................................................................................249
4.7 Behavior at CPU/master STOP .................................................................................................250
4.8 Setting parameters for the 1SSI.................................................................................................251
4.9 Diagnostics.................................................................................................................................254
4.9.1 Diagnostics using the LED display ............................................................................................254
4.9.2 Error types..................................................................................................................................255
4.10 Control and Feedback Interfaces in Standard Mode .................................................................256
4.11 Feedback Interface in Fast Mode ..............................................................................................259
4.12 Technical Specifications ............................................................................................................261

Table of contents
Technological Functions
6 Operating Instructions, 06/2010, A5E00124867-07
5 2PULSE................................................................................................................................................. 265
5.1 Product Overview...................................................................................................................... 265
5.2 Isochronous mode..................................................................................................................... 267
5.3 Example: Starting 2PULSE....................................................................................................... 268
5.4 Modes and Functions................................................................................................................ 271
5.4.1 Overview ................................................................................................................................... 271
5.4.2 "Pulse output" operating mode.................................................................................................. 273
5.4.3 "Pulse width modulation" operating mode ................................................................................ 279
5.4.4 "Pulse train" operating mode..................................................................................................... 289
5.4.5 "On/Off-delay" operating mode ................................................................................................. 295
5.4.6 "Frequency output" operating mode ......................................................................................... 303
5.4.7 Sequence counter..................................................................................................................... 309
5.4.8 Function: Measurement of current ............................................................................................ 310
5.4.9 Function: Direct Control of the DO Digital Output..................................................................... 311
5.4.10 Function: Error Detection/Diagnostics ...................................................................................... 313
5.4.11 Parallel connection of both channels ........................................................................................ 315
5.4.12 Behavior at CPU-Master-STOP ................................................................................................ 317
5.5 Parameter assignment and compatibility.................................................................................. 318
5.5.1 Configuring the 2PULSE........................................................................................................... 318
5.5.2 Compatibility of the 2PULSE with predecessor versions.......................................................... 320
5.6 Diagnostics................................................................................................................................ 321
5.6.1 Diagnostics using the LED display............................................................................................ 321
5.6.2 Error types................................................................................................................................. 322
5.7 Application Examples................................................................................................................ 323
5.7.1 Overview ................................................................................................................................... 323
5.7.2 Example: Filling Liquids ............................................................................................................ 324
5.7.3 Example: Heating a Liquid ........................................................................................................ 328
5.7.4 Example: Packing Piece Goods................................................................................................ 332
5.7.5 Example: Applying a Protective Layer ...................................................................................... 337
5.7.6 Current regulation of a valve..................................................................................................... 341
5.8 Technical Specifications of the 2PULSE, Terminal Assignment............................................... 347
5.9 Technical Specifications for Programming, Reference Lists .................................................... 353
Index...................................................................................................................................................... 359

Technological Functions
Operating Instructions, 06/2010, A5E00124867-07 7
Preface 1
How this Manual Is Structured...
This manual is supplementary to the ET 200S Distributed I/O System operating instructions.
The ET 200S Distributed I/O System
(http://support.automation.siemens.com/WW/view/en/1144348) operating instructions
provide comprehensive information pertaining to the hardware configuration, installation,
wiring, commissioning, diagnostics and technical specifications of the ET 200S distributed
I/O system.
This manual provides a description of functions and the technical specifications of the
ET 200S modules for technological functions: 1Count24V, 1Count5V, 1SSI and 2PULSE.
How to Find Your Way Around
At the beginning of each section you will find a Product Overview, which lists the features
and applications of the module described. You will also find the order number of the module
and the name and release of the software required. For the current GSD file, go to:
● http://www.automation.siemens.com/csi/gsd
In each section you will then find a section with the heading Brief Instructions on
Commissioning. These brief instructions tell you in a series of short steps how to install and
configure the module, how to integrate it in your use program, and how to test it in your user
program.
Index
The index contains keywords that come up in the manual.
Standards and approvals
For information about standards and approvals, refer to the section "General technical
specifications" in the ET 200S Distributed I/O System
(http://support.automation.siemens.com/WW/view/en/1144348) operating instructions.
Recycling and disposal
The ET 200S 1Count24V, ET 200S 1Count5V, ET 200S 1SSI and ET 200S 2PULSE
modules can be recycled due to the non-toxic materials from which they are assembled. For
environmentally sustainable recycling and disposal of your old device, contact a certified
disposal service for electronic scrap.

Preface
Technological Functions
8 Operating Instructions, 06/2010, A5E00124867-07
Additional support
If you have any further questions about the use of products described in this manual and do
not find the right answers here, contact your local Siemens representative
(http://www.siemens.com/automation/partner):
A guide to the technical documentation for the various products and systems is available on
the Internet:
● SIMATIC Guide manuals (http://www.siemens.com/simatic-tech-doku-portal)
The online catalog and online ordering systems are also available on the Internet:
● A&D Mall (http://www.siemens.com/automation/mall)
Training center
To help you get started with automation technology and systems, we offer a variety of
courses. Contact your regional Training Center or the central Training Center in D-90327
Nuremberg, Germany.
● Internet: SITRAIN homepage (http://www.sitrain.com)
Technical Support
You can access technical support for all A&D projects via the following:
● Online support request form: (http://www.siemens.com/automation/support-request)
Service & Support on the Internet
In addition to our documentation, we offer a comprehensive online knowledge base on the
Internet at:
Industry Automation and Drive Technologies - Homepage
(http://www.siemens.com/automation/service&support)
There you will find the following information, for example:
● The newsletter that provides up-to-date information on your products.
● The documents you need via our Search function in Service & Support.
● A forum for global information exchange by users and specialists.
● Your local partner for Automation and Drives.
● Information about on-site service, repairs, and spare parts. Much more can be found
under "Services".

Technological Functions
Operating Instructions, 06/2010, A5E00124867-07 9
1Count24V 2
2.1 Product Overview
Order Number
6ES7 138-4DA04-0AB0
Compatibility
The 1Count24V with the order number 6ES7 138-4DA04-0AB0 replaces the
1Count24V/100kHz with the order number 6ES7 138-4DA03-0AB0 with full compatibility. In
STEP 7 version V5.3 SP2 and later, you can use it in non-isochronous and isochronous
modes.
Features
● Connection of a pulse generator to count 24 V signals up to a frequency of 100 kHz.
● Can be operated using terminal modules TM-E15S24-01 and TM-E15S26-A1
● Isochronous mode
● Modified user data interface 1
1 Instead of 8 bytes of input data and 8 bytes of output data, 12 bytes of input data and 6
bytes of output data are used, provided the IM 151 supports this.
The following IM 151 modules support this function:
– IM151-1/Standard order no. 6ES7 151-1AA04-0AB0 and higher
– IM151-1/HF order no. 6ES7 151-1BA01-0AB0 and higher
● Operating modes of the 1Count24V:
Counting modes:
– Count continuously
– Count once
– Periodic Counting
Measuring modes:
– Frequency with integration time
– Rotational speed measurement
– Period measurement

1Count24V
2.1 Product Overview
Technological Functions
10 Operating Instructions, 06/2010, A5E00124867-07
Position feedback:
– Position detection
– Fast mode
● Gate control, synchronization or latch function via digital input (P or M switch)
● One real digital output for direct control or output of the comparison result
● One virtual digital output
● Firmware update 1
● Identification data 1
1 The following IM 151 modules support this function: IM 151-1 Standard: As of 6ES7151-
1AA04-0AB0 and IM 151-1 High Feature: As of 6ES7 151-1BA01-0AB0
Connectable Counting Signals
The 1Count24V can count the signals of the following encoders:
● 24 V pulse encoder with direction level
● 24 V pulse encoder without direction level
● 24 V incremental encoder with two tracks that are 90o out of phase (rotary encoder).
Adjustment During Operation
● Counting modes
– You can change the function and behavior of the digital outputs during operation
● Measuring modes
– You can change the function of the DO1 digital output during operation
– You can change the integration time and the update time during operation
Configuration
In order to configure the 1Count24V use one of the following options
● STEP 7 V5.3 SP2 or higher, or
● HSP (hardware support package, available online) as of STEP 7 Version V5.2 SP1

1Count24V
2.1 Product Overview
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07 11
Firmware update
In order to extend the functionality and eliminate errors, firmware updates can be
downloaded to the operating system memory of the 1Count24V by means of the STEP 7 HW
Config software.
Note
When you launch the firmware update, the old firmware is deleted. If the firmware update is
interrupted or canceled for any reason, the 1Count24V will no longer function correctly as a
result. Restart the firmware update and wait until it has completed successfully.
Identification Data 1
● Hardware release status
● Firmware release status
● Serial number
1See also ET 200S Distributed I/O operating instructions
(http://support.automation.siemens.com/WW/view/en/1144348), "Identification data" section.

1Count24V
2.2 Isochronous mode
Technological Functions
12 Operating Instructions, 06/2010, A5E00124867-07
2.2 Isochronous mode
Note
For basic information on isochronous mode, refer to the Isochronous mode
(http://support.automation.siemens.com/WW/view/en/15218045) function manual.
Hardware Requirements
You will require the following for the 1Count24V in isochronous mode:
● A CPU that supports isochrone mode
● PROFIBUS master or PROFINET controller that supports the constant bus cycle time
● An IM 151 that supports isochrone mode
Features
Depending on the system parameter assignment, the 1Count24V works in either non-
isochronous or isochronous mode.
In isochronous mode, data communication between the bus master and 1Count24V is
isochronous to the cycle.
In isochronous mode, all 8 bytes / 12 bytes of the user data interface are consistent.
If a parameter assignment error occurs, the 1Count24V does not go into isochronous mode.
If isochronous mode fails due to faults or failure/delay of global control (GC), the 1Count24V
returns to isochronous mode during the next cycle without an error response.
If isochrone mode fails, the user data interface is not updated.
The Ti/To overlap is supported by the module in firmware version V1.0.1 and later.

1Count24V
2.3 Brief instructions on commissioning the 1Count24V
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07 13
2.3 Brief instructions on commissioning the 1Count24V
Introduction
These instructions guide you to a functioning application that will enable you to count the
switching operations of a contact and become familiar with and check the basic hardware
and software functions of the 1Count24V. The counting mode used in this example is "Count
continuously".
Requirements
The following requirements must be satisfied:
● You must have put an ET 200S station on an S7 station with a DP master into operation.
● You must have the following:
– A TM-E15S24-01 terminal module
– A 1Count24V,
– A momentary contact switch and the necessary wiring material
Installation, Wiring and Fitting
1. Install and wire the TM-E15S24-01 terminal module (see Figure).
2. Plug the 1Count24V into the terminal module. Detailed instructions are provided in the
ET 200S Distributed I/O Device
(http://support.automation.siemens.com/WW/view/en/1144348) operating instructions.
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Figure 2-1 Terminal Assignment for the Example

1Count24V
2.3 Brief instructions on commissioning the 1Count24V
Technological Functions
14 Operating Instructions, 06/2010, A5E00124867-07
Configuring with STEP 7 using HW Config
You must first adapt the hardware configuration of your existing ET 200S station.
1. Open the relevant project in SIMATIC Manager.
2. Open the HW Config configuration table in your project.
3. Select 1Count 24V in the hardware catalog.
The number 6ES7 138-4DA04-0AB0 C appears in the infotext. Drag the entry to the slot
at which you have mounted your 1Count24V.
4. Double-click this number to open the "Properties - 1Count 24V" tab (R-S Slot Number).
5. On the Addresses tab, you will find the addresses of the slot to which you have dragged
the 1Count24V. Make a note of these addresses for subsequent programming.
6. The Parameters tab contains the default settings for the 1Count24V. Leave the default
settings unchanged.
7. Save and compile your configuration, and download the configuration in STOP mode of
the CPU by choosing "PLC > Download to Module".
Integration into the User Program
(not for modified user data interface)
1. Create block FC 101 and integrate it in your control program (in OB 1, for example).
This block requires the DB1 data block with a length of 16 bytes. The start address of the
module in the following example is 256.
STL Description
Block: FC101
Network 1: Presettings
L 0 //Delete control bits
T DB1.DBD0
T DB1.DBD4
SET
S DB1.DBX4.0 //Open SW gate
Network 2: Write to the control interface
L DB1.DBD0 //Write 6 bytes to the 1Count24V
//Configured start address of the outputs
T PAD 256
L DB1.DBW4
T PAW 260

1Count24V
2.3 Brief instructions on commissioning the 1Count24V
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07 15
STL Description
Network 3: Read from the feedback interface
//Read 8 bytes from the 1Count24V
//Configured start address of inputs
L PED 256
T DB1.DBD8
L PED 260
T DB1.DBD12
Testing
Use "Monitor/Modify Variables" to monitor the count value and the gate.
1. Select the "Block" folder in your project. Choose the "Insert > S7 Block > Variable Table"
menu command to insert the VAT 1 variable table, and then confirm with "OK".
2. Open the VAT 1 variable table, and enter the following variables in the "Address" column:
DB1.DBD8 (current count value)
DB1.DBx13.0 (internal gate status)
3. Choose "PLC > Connect To > Configured CPU" to switch to online.
4. Choose "Variable > Monitor" to switch to monitoring.
5. Switch the CPU to RUN mode.
The "internal gate status" bit must be set.
6. Use your counting contact to generate pulses.
Result
You can now see that:
● The UP LED on the 1Count24V is on. The status of the UP LED changes with each new
pulse.
● The count value in the block changes.

1Count24V
2.4 Terminal Assignment Diagram
Technological Functions
16 Operating Instructions, 06/2010, A5E00124867-07
2.4 Terminal Assignment Diagram
Wiring Rules
The cables (terminals 1 and 5 and terminals 2 and 8) must be shielded. The shield must be
supported at both ends. To do this, use the shield contact (see the ET 200S Distributed I/O
System (http://support.automation.siemens.com/WW/view/en/1144348) operating
instructions).
Terminal assignment of the 1Count24V
The tables below show the terminal assignment for the 1Count24V:
Table 2- 1 Terminal assignment of the 1Count24V
View Terminal Assignment Remarks
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B: Direction input or track B
A: Pulse input or track A
24V DC: Sensor supply
M: Chassis ground
DI: Digital input
DO1: Digital output
Pulse Generator Connection
Encoder Type Connection Count Direction
Pulse generator without direction indicator 24 V count pulses at terminal 5 (A) pulses
Pulse generator with direction indicator 24 V count pulses at terminal 5 (A) and 24
V direction at terminal 1 (B)
Up, down
Pulse generator with 2 tracks that are 90o
out of phase
Track A terminal 5 (A) and track B terminal
1 (B)
Up, down

1Count24V
2.5 Operating modes and application areas of the 1Count24V
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07 17
2.5 Operating modes and application areas of the 1Count24V
Introduction
To begin with, decide how you want to use the 1Count24V. You can choose between the
following modes:
Counting modes Measuring modes Position feedback Fast mode
Count continuously Frequency measurement Position detection Position feedback in short (isochronous) cycles
Count once Rotational speed
measurement
Count periodically Period measurement
Parameters are assigned to the various modes. You will find the parameter lists in the descriptions of the modes.
You can integrate the 1Count24V in your project in two different ways. Decide whether you want to work with a GSD file or
with STEP 7.
Integrate 1Count24V using STEP 7
Integrate 1Count24V using STEP 7
(in isochronous and non-isochronous mode)
Select an entry from the hardware catalog that corresponds to the operating mode you want.
For counting modes,
select the "1Count24V
Counting Mode V2.0" entry
For measuring modes,
select the "1Count24V
Measuring Mode V2.0" entry
For position detection,
select the "1Count24V
Position Detection V2.0"
entry
For Fast Mode, select the "1
COUNT24V Fast Mode V2.0"
entry
The number 6ES7 138-
4DA04-0AB0 C appears in
the infotext. Drag the entry
to the slot at which you have
mounted your 1Count24V.
The number 6ES7 138-
4DA04-0AB0 M appears in
the infotext. Drag the entry
to the slot at which you have
mounted your 1Count24V.
The number 6ES7 138-
4DA04-0AB0 W appears in
the infotext. Drag the entry
to the slot at which you have
mounted your 1Count24V.
The number 6ES7 138-
4DA04-0AB0 F appears in the
infotext. Drag the entry to the
slot at which you have
mounted your 1Count24V.
Select the parameters.

1Count24V
2.5 Operating modes and application areas of the 1Count24V
Technological Functions
18 Operating Instructions, 06/2010, A5E00124867-07
Integrate the 1Count24V with the GSD file
Integrate the 1Count24V with the GSD file
(only in non-isochronous mode)
Select an entry in the GSD file that corresponds to the operating mode you want.
For counting modes, select
C 6ES7 138-4DA04-0AB0 1CNT24V
For measuring modes, select
M 6ES7 138-4DA04-0AB0 1CNT24V
For position feedback, select
W 6ES7 138-4DA04-0AB0 1CNT24V
Select the parameters.
Note
Fast mode is designed for use in especially short isochronous cycles. You need STEP 7 to
configure isochronous operation.

1Count24V
2.6 Count Modes
Technological Functions
Operating Instructions, 06/2010, A5E00124867-07 19
2.6 Count Modes
2.6.1 Overview
Principle
The counting modes are used in counting applications (for counting of items, for example).
For the "Counting modes" parameter, you can select from the following modes:
● Count continuously (for position detection with incremental encoders, for example)
● Count once (for counting items up to a maximum limit, for example)
● Count periodically (in applications with recurring counting operations, for example)
To run one of these modes, you have to assign parameters to the 1Count24V (see section
"Parameter Assignment for the Count Modes (Page 163)").
Maximum Count Range
The high counting limit is [phone] (231 - 1).
The low counting limit is -2147483648 (-231).
Load Value
You can specify a load value for the 1Count24V.
This load value is either applied directly as the new count value (LOAD_VAL) or it is applied
as the new count value when the following events occur (LOAD_PREPARE):
In the Count once and Count periodically counting modes:
● The low or high counting limit is reached when a main count direction is not assigned.
● The assigned high counting limit is reached when the main count direction is up.
● Zero is reached when the main count direction is down.
In all counting modes:
● The counting operation is started by a SW gate or HW gate (if the counting operation is
continued, the load value is not applied).
● Synchronization
● Latch and retrigger
Gate Control
To control the 1Count24V, you have to use the gate functions.

1Count24V
2.6 Count Modes
Technological Functions
20 Operating Instructions, 06/2010, A5E00124867-07
Main Count Direction
With the main count direction, you assign which RESET states (status following parameter
assignment) the load value and count value can take on. It is thus possible to create
incrementing or decrementing count applications. The assigned main count direction has no
effect on the direction evaluation when the count pulses are detected.
RESET States of the Following Values after Parameter Assignment
Table 2- 2 RESET States
Value Main count direction RESET state
Load value None
Up
Down
0
0
Assigned high counting limit
Count value None
Up
Down
0
0
Assigned high counting limit
Comparison value 1 and 2 None
Up
Down
0
0
Assigned high counting limit
Latch value None
Up
Down
0
0
Assigned high counting limit
Isochrone Mode
In isochronous mode, the 1Count24V accepts control bits and control values from the control
interface in each bus cycle and reports back the response in the same cycle.
In each cycle, the 1Count24V transfers the count or latch value that was valid at time Ti and
the status bits valid at time Ti.
A count controlled by hardware input signals can only be transferred in the same cycle if the
input signal occurred before time Ti.
(See Isochronous Mode (http://support.automation.siemens.com/WW/view/en/15218045)
function manual)