06_hmi Panels and Profibus Dp

Automation and Drives

HMI Panels and PROFIBUS DP

PROFIBUS DP

SITRAIN IK-PBSYS / HMI Devices

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Co n t en t s

03/2007 © Siemens AG 2007 - Subject to change without prior notice

Pag e

HMI devices: devices: TP 170B panel .......... ................ ........... ........... ........... ........... ........... ........... ............ ........... .......... ........... .......... .......... ............ ........... .......... .......... ........... ........ ..

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Interfaces Interfaces on TP170B TP170B .......... ............... .......... .......... .......... .......... ........... ........... .......... .......... .......... .......... .......... ........... ............ ............ ............ ........... ........... .......... .......... .......... ....

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WinCC flexible flexible ........... ................ ........... ............ ........... .......... .......... ........... ............ ........... .......... .......... ........... ........... .......... .......... ........... ............ ........... .......... .......... .......... .......... ........ ...

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Basic activities activities ........... ................ ........... ............ ........... .......... .......... .......... ........... ........... .......... .......... ........... ............ ............ ........... .......... ........... ............ .......... .......... ............ ............ ......

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Touch panel: panel: Setting Setting the interface interface for project project transfer transfer ........... ................. ............ ............ ........... .......... .......... .......... .......... ........... ........... .......... .......

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Hardware Hardware configuratio configuration: n: Runtime Runtime interface interface

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WinCC flexible flexible configuring configuring interface interface ........... ................. ........... ........... ............ ............ ........... .......... ........... ........... .......... .......... ........... ........... .......... ......... ......... ....... ..

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Defining Defining the connection connection to the PLC ........... ................ ........... ........... .......... .......... .......... ........... ........... ........... ............ ........... .......... .......... .......... .......... ........... .......... .... Requirement Requirements s for HMI transfer transfer ........... ............... .......... ............ ............ ........... .......... .......... .......... ........... ............ ........... .......... .......... .......... .......... ........... ............ ........... .....

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Transfer Transfer setting settings s in in WinCC WinCC flexible flexible

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Exercise 1: 1: Copy a touch panel project project TP170B TP170B ........... ................. ........... .......... .......... .......... ........... ........... .......... .......... .......... .......... ........... .......... ....

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Exercise 2: 2: Prepare Prepare the touch panel interface interface

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Exercise 3: 3: Set a PG interface interface ........... ................ .......... .......... ........... ........... .......... .......... ........... ............ ............ ........... .......... ........... ............ ............ ............ ........... ....... Exercise 4: 4: Test Test the the PROFIB PROFIBUS US DP ........... ................ .......... ........... ............ ........... .......... .......... .......... ........... ........... .......... ........... ............ ............ ............ .......... ....

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Exercise 5: 5: Test the runtime runtime interface interface

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Exercise 6: 6: Test Test the the connec connection tion to the the PLC PLC .......... ................ ........... .......... .......... .......... ........... ........... ........... ............ ........... .......... .......... ........... ............ ......

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Exercise 7: 7: Transfer Transfer a WinCC flexible flexible project ........... ................ .......... ........... ............ ........... .......... .......... ........... ........... .......... .......... ........... ............ ........

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Exercise 8: 8: Test a WinCC flexible flexible project project

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Exercise 9: 9: Configure Configure an HMI device as a DP DP slave ........... ................ .......... .......... ........... ........... .......... .......... ........... ............ ............ ........... ....... ..

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Exercise 10: 10: Configure Configure direct key functions functions

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Exercise 11: 11: Programmed Programmed access ........... ................. ........... ........... ........... .......... .......... .......... .......... ........... ............ ........... .......... .......... ........... ........... ........... ......... ...

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Direct Direct key functionali functionality ty (DP slave) slave)

SITRAIN trainin training g for Automation and Industrial Solutions

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IK-PBSYS HMI Panels and PROFIBUS DP


HMI devices: TP 170B panel


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Introduction

An HMI device such as the TP170B TP170B Colour used in the training rack can communicate with the CPU via a range of different data transfer media (bus systems). The CPU data, i.e. its program run, can be visualized and monitored.

PROFIBUS

In most cases, the PROFIBUS PROFIBUS is used as the data transfer transfer medium. The transmission protocol used internally is the S7 protocol, i.e. the same one used by STEP7 as an online protocol. Accordingly, the HMI device itself is not configured as a DP slave, but merely as a bus node in the PROFIBUS subnet. The disadvantage of the S7 protocol, however, is that it is slower than the PROFIBUS DP protocol. If the HMI application includes time-critical functions which require a faster protocol than the S7, it is now possible to configure the HMI device as a DP slave.

Direct keys

"Direct keys" allow a number of input and output signals (quantity depends on the type of HMI device) to be exchanged in a high-speed cycle between the HMI device (DP slave) and the DP master. The HMI device then communicates with the CPU using two different methods: 1.Convent 1.Convention ionall ally y via HMI HMI varia variable bles: s:

Non-ti Non-timeme-crit critica icall S7 proto protocol col

2. Ad Additionally via IO areas:

High-speed DP protocol

SITRAIN trainin training g for Automation and Industrial Solutions

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Interfaces on TP170B


Interfaces

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The TP170B is provided with three different interfaces for connection to the PLC or PC. Interface (3) IF1B is the most important of the three for the SIMATIC S7 environment. This is an RS485 interface which is used for both MPI and PROFIBUS. The difference between the two is solely determined by the protocol used. For applications which require the TP170B to function as a DP slave, it is connected to the PROFIBUS via this interface. The firmware of the HMI device uses the RS485 interface in combination with the PROFIBUS protocol to perform the following functions: 1. Data exchange with the S7-CPU: In this case, the S7 protocol is embedded in the PROFIBUS protocol (SDA/SDN message frames). 2. Data exchange with the DP master: DP protocol (SRD message frame) 3. S7 online functions: The RS485 interface of the PG or PC is switched over from MPI to PROFIBUS. The PG or PC can then be connected to the PROFIBUS which means that it has online access to the DP master CPU, the I slaves as well the HMI device.

SITRAIN training for Automation and Industrial Solutions

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WinCC flexible Adv anced

Ad vanced dem o - Full scope of functions - Limited to max. 30 days

Standard

Compact

*)

Option

Micro

E n g i n e e r i n g SIMATIC PANEL Micro

SIMATIC PANEL 70 / 170

SIMATIC PANEL 270 / 370

(ES) PC-based Windows 2000 Windows XP

R u n t i m e (RT)


s n o i t p o T R

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WinCC flexible The Engineering System (ES) is the software you use to configure Engineering System an interface for operating and monitoring machines and plant. Editions

The Engineering System of WinCC flexible is of modular design, graded in different editions. The edition determines which operator panels in the SIMATIC HMI spectrum can be configured. With each higher edition you e xpand the spectrum of supported devices and WinCC flexible functionality. The configuration data are compatible. Micro: For configuring Micro panels Compact: For configuring Micro panels and series 70 and 170 panels Standard: For configuring all panels ( Micro panels, series 70/170/270 and 370 panels) Ad vanc ed: For configuring PC-based and all other panels (Micro panels, series 70/170/270/370 and PC Runtime panels) Ad vanc ed Demo :Test version limited to 30 days

Change WinCC flexibl e With WinCC flexible Compact edition and higher, you can use a"PowerPack" to edition upgrade to a higher version of WinCC flexible edition. Runtime

WinCC flexible Runtime (RT) is the software for process visualization on the operator panel. You execute the project in process mode in WinCC Runtime. The different panels are shipped with an operating system and the appropriate Runtime version. Any additionally required Runtime components are installed with the project on the panel.

Options

Options (licenses) can be added on to both components. These options are dependent on the PLC used. An operator panel which does not support a particular functionality cannot use the corresponding option either.


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Basic activities Configuring phase (offline)

Transfer

Process control phase

PC/PG WinCC flexible Configuration data

Configuration data Source file .hmi

PC/OP/TP WinCE Flash

PC

Ethernet

Flash MPI DP

PLC PLC


Introduction

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The network is configured on a PC or a programming device (PG). The configuration must then be generated under WinCC flexible and downloaded to the PC/OP/TP. If there is a link to the PLC, the PC/OP/TP displays the current values in the variables and graphics. The diagram shows the different phases in which the configuration data are used.

Configuration

Configuration is performed in stages: 1.Specification of the PLC and type of link (MPI, PROFIBUS-DP, Industrial Ethernet) etc. 2.General settings for the PC/OP/TP (defines the current connections, etc.) 3.Generation of objects such as variables, displays, messages, etc. 4.Transfer of the generated database via MPI to the HMI system, PROFIBUS DP or Industrial Ethernet. The configuration data are stored in source files in your S7 project (directory …\HmiEs). The generation process produces a file of type "fwx" which is later transferred to the target device •

Editors

.fwx

for Windows-based HMI systems

Several editors (tools) with which individual object types can be configured have been integrated into WinCC flexible. Each object is created using a symbolic name. This symbolic name must always be entered when the object is created, edited, referenced or deleted.


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Touch panel: Setting the interface for project transfer Loader V07.01.01.00_01.34

OK X

PROFIBUS

Transfer

Panel is the only master on bus Station Parameters

Start Control panel

Add ress :

1

Timeout:

1 sec

Network Parameters Transmission Rate:

1.5 Mbits/s

Highest Station:

126

Profile:

DP Bus parameters...

OK X

Transfer settings Ch an nel

Di rec t or ies

OK X

S7 transfer settings

Channel 1: Serial:

Enable Channel

MPI

Remote control

PROFIBUS

Channel 2: MPI / PROFIBUS

Enable Channel Remote control

Properties... Advan ced


Transfer settings

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The TP170B must be parameterized for project transfer. These settings are only relevant for loading the project, but not for subsequent communication between the panel and PLC during process control. The inter face parameters required to make these settings are assigned internally in the project with WinCC flexible. Channel:

In addition to the serial transfer channel (channel 1), a second channel (channel 2) for loading the project to the operator panel can be selected.

Remote Control: The Runtime application need not be ended manually before the WinCC flexible project loading process is started. The panel automatically terminates Runtime and switches over to transfer mode. Ad vanced:


Transmission parameter settings for MPI or PROFIBUS DP

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Hardware configuration: Runtime interface

Configuration

Properties of the interface


Communication settings

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Properties of the PROFIBUS interface


The interface parameters (address and network) for a WinCC flexible project integrated in STEP7 are assigned with the tool HW Config, as illustrated in the screenshots above. The panel will later use these parameter settings to communicate with the PLC or PLCs when Runtime is active or during process control. In the case of WinCC flexible projects which are not integrated in STEP7, these parameters are defined with WinCC flexible when the "Connections" are configured (see below).


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WinCC flexible configuring interface

Tools Project Editor area Work area

Properties

Edition SITRAIN IK-PBSYS / HMI Devices

Call

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WinCC flexible can be called directly from the SIMATIC Manager for projects integrated in STEP7. Following the software installation, the engineering interface is launched with a basic setting. The key windows are opened.

Project w indow

The Project window is the central control point for configuration. All components and all available configuration editors of a project appear in a tree structure in the Project window, and can be opened from there. Each editor is assigned a symbol which you can use to identify the corresponding objects. Only those elements which are supported by the selected operator panel are displayed in the project window. In the project window you have access to the operator panel settings, language settings and version management.

Work area

The central configuration area in which the objects of the operator panel can be processed using the active editor. Several editors can be open simultaneously.

Properties wi ndow

The Properties window is used to edit the properties of selected objects (e.g. displays, display objects, variables). The Properties window is only available in editors where object properties have to be set.

Tool window

The tool window contains all objects which can be configured in d isplays, and permits access to libraries.

Output window

The Output window displays all engineering system alarms produced, for example, when generating a project.


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Defining the connection to the PLC

Properties can be edited only via NETPRO


Creating connections

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The purpose of configuring a connection or connections is to define the communication partners of the operator panel with which the Runtime application will later exchange data during process control. In the case of WinCC flexible projects integrated in STEP7, this merely involves setting up connections to partners (PLCs). The addresses of the operator panel and S7 PLC as well as the assigned network (MPI, PROFIBUS, Ethernet) have already been defined in the hardware configuration for the operator panel and the S7 PLC. All the connection parameters (address of operator panel and PLC, network connections) for WinCC flexible projects which are not integrated in STEP7 must be assigned in this screen.


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Requirements for HMI transfer •

Configured device type identical to type of target device

•

Configured device version matches image version on target device

•

Connection exists to target device (transfer interface settings) → →

Direct connection within a bus segment Connection through routing

•

Target device in transfer readiness (transfer mode active)

•

Project can be generated without errors →

•

File (*.FWX) is generated ⇒ Contains generated configuration data for the target device

Transfer settings in WinCC flexible match the connection


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Notes


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Transfer settings in WinCC flexible

Transfer to panel Check transfer settings


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Transfer settings

Transfer is the transmission of the project to the operator panel on which the project will run. The transfer settings entered here are relevant only for transferring the project, but not for the subsequent exchange of data with the PLC during process control.

Transfer mode

The operator panel must be in "transfer mode" for the transfer operation. Depending on how the interface parameters are set, the operator panel must either be switched manually over to transfer mode or it will switch over automatically.


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Exercise 1 : Copy a touch panel project TP170B

Copy the TP project to your own S7 project


Task description

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Copy the touch panel project "TP170B_Color" from project “08_HMI-Panels_DP" into your own project. The project contains a basic visualization application for the TP 170B and an executable S7 program which is operated via the panel.

Procedure

1. Extract the S7 archive "08_HMI-Panels_DP_TN.zip ". 2.Open the project “08_HMI-Panels_DP" 3.Copy the touch panel project "TP170B_Color" to your own project


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Exercise 2 : Prepare a touch panel interface Loader V07.01.01.00_01.34

OK X

PROFIBUS

Transfer

Panel is the only master on bus Station Parameters

Start Control panel

Add ress :

1

Timeout:

1 sec

Network Parameters Transmission Rate:

1.5 Mbits/s

Highest Station:

126

Profile:

DP Bus parameters...

OK X

Transfer settings Ch an nel

Di rec t or ies

OK X

S7 transfer settings

Channel 1: Serial:

Enable Channel

MPI

Remote control

PROFIBUS

Channel 2: MPI / PROFIBUS

Enable Channel Remote control

Properties... Advan ced


Task description

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The interface of the TP170B must be set as shown above so that the WinCC flexible project can then be downloaded from the PG to the panel. Before the interface can be parameterized, the Runtime application must be terminated. A button for ending Runtime is generally displayed in the start screen. When Runtime has been terminated, the "Loader" is displayed and this can be used to activate the "Control panel" (see figure above). The Loader also appears every time the voltage supply is restored.

Procedure

1.Close the Runtime application on the touch panel 2.Activate the "Control panel" 3.Double click on "Transfer" 4.Make the settings illustrated in the figure and keep accepting them with "OK" until the "Control panel" is displayed again 5.Double click on the "OP" icon 6. Click on the button "Save Registry“ 7.Return to the loader by closing the control panel. 8.Activate "Transfer" by selecting the "Transfer" button. The TP 170B waits for the PG to set up a connection in this mode.

Notes

Channel:

In addition to the serial transfer channel (channel 1), a second channel (channel 2) for loading the project to the operator panel can be selected.

Remote Control: The Runtime application need not be ended manually before the WinCC flexible project loading process is started. The panel automatically terminates Runtime and switches over to transfer mode. Ad vanced:


Transmission parameter settings for MPI or PROFIBUS DP

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Exercise 3 : Set a PG interface

Set PG/PC interface on PROFIBUS-DP


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Task descript ion

In order to ensure that the WinCC flexible project can be downloaded from the PG to the touch panel, the PG interface parameters must be parameterized on the PROFIBUS DP to match the transfer settings of the touch panel.

Procedure

1.Reconfigure the interface of your PG for PROFIBUS. Use the parameters shown in the figure above. Caution: Do not select "PROFIBUS DP slave" in the "Applied interface parameters" box 2.Connect the online cable of the PG to a PROFIBUS DP interface.


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Exercise 4 : Test the PROFIBUS DP

Test the PROFIBUS DP interface


Task descript ion

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The following are now connected to PROFIBUS: - The PG:

(address 0, active)

- The touch panel:

(address 1, active)

- The S7 control:

(address 2, active)

- The ET200S:

(address 4, passive)

- Possibly a Micromaster MM420:

(address 6, passive)

Use the "SIMATIC NET diagnosis" function (see figure above) to check whether all nodes can be accessed via PROFIBUS. Procedure

1.Launch the diagnosis function by selecting SIMATIC Manager  Options  Set PG/PC interface Diagnosis 2.Click on the "Test" button to check the PROFIBUS network 3.Click on the "Read" button to identify which nodes can be accessed via PROFIBUS.

Note

The node properties "active" and "passive" indicate whether a node can initiate communication with another node (active) or not (passive).


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Exercise 5 : Test the runtime interface

Configuration

Properties of the interface


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Properties of the PROFIBUS interface


Task descript ion

In order to ensure that the Runtime application on the panel can communicate with the S7 station during pr ocess control, the panel interface must be parameterized with the hardware configuration tool.

Procedure

Check the parameter settings of the panel interface using the hardware configuration tool. If necessary, adjust the settings as required (see figure). Check the network settings using the network configuring tool (NETPRO):


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Exercise 6 : Test the connection to the PLC

Connection parameters

2xL

Connections


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Task description

Set up a connection so that the panel Runtime application can communicate with your trainer PLC.

Procedure

1.Launch WinCC flexible by opening the WinCC flexible station TP170B_Color in the SIMATIC Manager (see figure on left) and double click on "Connections" in this screen 2.Check whether your S7 station has been set up as a connection partner. 3.Connect the WinCC flexible variables to the PLC variables by selecting Options  Re-connect…  select dialog options as illustrated below  ok (select all variables in the variable editor)

4.Generate the whole project again by selecting Project  Generator  Regenerate all


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Exercise 7 : Transfer a WinCC flexible project

Transfer to panel

PROFIBUS address (panel)


Transfer

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Task description

The specified WinCC flexible project "TP_170B_Color" must be downloaded to the panel.

Procedure

1.Activate the transfer function and make the settings shown in the figure 2. Start the data transfer to the panel by selecting button "Transfer "


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Exercise 8 : Test a WinCC flexible project


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Task description

The WinCC flexible project "TP170B_Color" must be tested in conjunction with the S7 program for correct functioning:

Procedure

1.Download all S7 blocks from project “08_HMI-Panels_DP" onto your CPU via PROFIBUS and restart the system. 2.Select the "Belt" display and check whether the output fields are displaying the following information correctly:


•

Status of initiators in stations 1 to 3 and the light barrier

•

Belt fault display

•

Operating states (system ON, manual and auto modes)

•

ACTUAL quantity

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Direct key functionality (DP slave)

PROFIBUS DP

PROFIBUS - DP slave (direct key functionality)


Initial situation

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The HMI device connected to PROFIBUS is exchanging data directly with the CPU (using the S7 protocol) which has been assigned as the communication partner in the WinCC flexible project. These S7 packets are packed only for transport reasons into a PROFIBUS message frame and transmitted via the PROFIBUS medium, i.e. the HMI device is not connected to PROFIBUS as a DP slave.

Direct keys

As a functional extension, "direct keys" provide a limited number of extra inputs and outputs which can be transmitted much quicker in a PROFIBUS message frame than the normal variables within the WinCC flexible configuration. For this reason, they are primarily used as switching functions for high-speed inputs. These inputs are referred to as direct keys. Their number is dependent on the type of HMI device.

Configuration

Direct keys are basically configured in the three stages: 1.The HMI device is "attached" to the master system as a DP slave. The input addresses via which the S7 program on the master CPU accesses the direct keys are also configured at this stage. 2.Buttons with direct key switching functions are configured in the WinCC flexible project. Bits or values in the input areas configured in stage 1 are ultimately controlled by these buttons. 3.The S7 program has "quite normal" access to these values by using the addresses assigned in stage 1 (input signal scanning).

Note

The faster reaction time of the "direct keys" function cannot be detected without a special measurement as it is only a matter of milliseconds faster than the normal transmission time.


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Exercise 9 : Configure an HMI device as a DP slave

Drag module to the PROFIBUS subnet

Direct control key module

Input and output addresses SITRAIN IK-PBSYS / HMI Devices

General

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The objects in the folder "Configured stations" are proxy objects (as for an I slave) which can be dragged to the PROFIBUS subnet. The HMI device is not displayed in the following screen unless it has already been configured in STEP7, in which case it can be finally connected to PROFIBUS.

Procedure

1.The DP slave to be configured is selected from folder PROFIBUS DP Configured stations  SIMATIC OP  OP170/TP170B/Mobile Panels .

2.The DP slave is finally connected to the master system with the Connect button. The direct control key module for the TP170B is concealed behind object TP170B and is dragged to an empty "slot" of the slave. Finally, the input and output addresses can be adjusted if required.


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Exercise 10 : Configure direct key functions

"Direct key" (only for "Press" event)

New buttons "Direct" left / right

Assign bit number


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Task description

Your task is to configure two additional buttons in the TP 170B p roject ("Belt" display). The "Direct key" is configured as a button function (e.g. a button which is pressed).

Procedure

1.Assign the function Direct key from the folder Keyboard to both buttons. 2.Assign the correct bit number. The range of possible numbers corresponds to the input area specified in the ha rdware configuration when the TP170B was configured as a DP slave. In this specific case, the input area is IB4 - IB7 (I4.0 corresponds to bit 0). "Direct" left



"Direct" right

I4.3 

I4.2

3.Save and generate the modified TP 170B project. 4.Download the changes to the touch panel. Test the functions that you will require, e.g. using a variable table, and monitor the signal states of the assigned inputs in response to actuation of the buttons on the TP 170B


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Exercise 11 : Programmed access

"Direct key" for "Jog right" function

"Direct key" for "Jog left" function


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Programming

A "Direct key" produces a "1" signal for as long as the key is pressed, i.e. as soon as the key is released, it automatically generates a "0" signal. Signal states are scanned in a similar way to standard access operations to the process images (PII, PIA).

Procedure

1.Open the block FC16 “FC_Belt_Motor" 2.Program any necessary supplementary functions (see figure) 3.Save and load the modified block FC16 4.Test the function Jog left/right by pressing the buttons on the TP 170 B.

Note

The faster reaction time of the "direct keys" function cannot be detected without a special measurement as it is only a matter of milliseconds faster than the normal transmission time.


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06_hmi Panels and Profibus Dp

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