Siemens simatic c7-621 User manual

SIMATIC
SIMATIC C7-621 Control System
First steps with STEP 7-Mini and ProTool/Lite
Guide
Edition 07/1999

A 03/99 Contents
First Steps with the C7-621 3
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Contents
Introduction.............................................................................................................................................5
Hardware............................................................................................................................................6
Checklist for startup............................................................................................................................7
Example machine: Quickmix..................................................................................................................8
Preparations for programming..............................................................................................................10
Start STEP 7.....................................................................................................................................10
Online help........................................................................................................................................10
General settings................................................................................................................................10
Create a project................................................................................................................................12
Define the hardware .........................................................................................................................13
Program development..........................................................................................................................15
Insert a block ....................................................................................................................................16
Edit the block....................................................................................................................................16
Insert a network................................................................................................................................17
Save the block..................................................................................................................................18
Set the operating mode ....................................................................................................................18
Clear the C7 CPU memory / reset the C7 OP...................................................................................18
Load blocks.......................................................................................................................................19
Extend the program..........................................................................................................................20
Copy RAM to ROM...........................................................................................................................22
Preparations for OP configuration........................................................................................................23
Start ProTool, create a configuration................................................................................................23
Online help........................................................................................................................................24
Display and enter values in screens.....................................................................................................25
Configure texts..................................................................................................................................25
Transfer the configured data.............................................................................................................26
Extend the configuration...................................................................................................................27
Link the screens and enable navigation via softkeys........................................................................31
Include standard screens in the configuration......................................................................................35
Configure event messages...................................................................................................................36
Symbolic addressing............................................................................................................................40
Set symbolic representation..............................................................................................................41
Use symbolic names in ProTool .......................................................................................................41
How to operate the C7-621..................................................................................................................46
Example program.................................................................................................................................47
Microsoft and Microsoft MS are registered trademarks, and Windows is a mark of Microsoft Corporation in the United States and
other countries.
SIMATIC is a registered trademark of SIEMENS AG.

Introduction A 03/99
4First Steps with the C7-621
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MPI Interface
PG connection and communication
External I/O Ex
p
ansion
Interface to connect an
expansion rack
16 digital inputs
24 V DC
16 digital outputs
24 V DC
4 analog inputs
1 analog output
On-Board I/O
F1F2F3F4F5
SFDC5V
FRCE
RUN
STOP
Hello,Iamthe
smallestSIMATICC7!
123
789
6
45
0
SIMATICC7-621
ENTER
ESC
SHIFT
+/-
SIMATIC
S7-300
SIEMENS
COROS OP3
ENTER
ESC
+/-
.
SHIFT
F2 F3 F4 F5 F1
1 2 3 4
5
6
7 89
0

A 03/99 Introduction
First Steps with the C7-621 5
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Introduction
The SIMATIC C7-621 provides you with a wide range of features to automate your process in a
convenient, clearly structured system with a fully functional man-machine interface.
This booklet shows you just how easily and quickly you can create your own application for Windows 95
with the C7-621, the STEP 7 or STEP 7-Mini *) programming software and the ProTool or ProTool/Lite **)
configuring software. Using a real-life solution as an example, we will guide you step by step to your
finished application.
In self-contained chapters, we explain the main functions of the SIMATIC C7- 621, describe typical tasks
on a sample machine, and provide you with some extra tips and tricks.
All Chapters are built on the same principle:
- First, the task is explained.
- Then we take you through the individual steps of the solution with illustrations of selected dialog boxes.
- Finally, we show you the result, so that you can check your own result after each programming and
configuring step.
Conventions:
The mouse indicates that you need to enter data on the PC/programming device.
The hand indicates that you need to enter data/perform an operator action on the
C7-621.
quickmix.pdb Texts to be configured, program sections to be coded and inputs to be selected from a
range of options are formatted in Courier.
File → New Menus, menu items, dialog boxes and text in dialog boxes that you select are written
in
italics .
*) Referred to below simply as STEP 7
**) Referred to below simply as ProTool

Introduction A 03/99
6First Steps with the C7-621
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Hardware
only connect programming device/PG
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Programming otare
 P ini
onigring ota re
 Proool/!ite
Programming device / P
3
1
2
" #$ %
MPI
6
5
4
&o cm entation &
F1 F2 F3 F4 F5
SF DC5V
FRCE
RUN
STOP
Hello, I am the
smallest SIMATIC C7!
123
7896
45
0
SIMATIC C7-621
ENTER
ESC
SHIFT
+/-
Checklist of components required:
Components Order No. Included in starter kit
PC or programming device No
STEP 7-Mini programming software 6ES7 810-3CC04-0YX0 Yes
ProTool/Lite configuring software 6AV6 580-3BX05-1AX0 Yes
SIMATIC documentation on CD-ROM
in 5 languages 6ES7 398-8AE00-8YE0 Yes
PC/MPI cable
RS232 cable 6ES7 972-0CA22-0XA0 6ES7 901-1BF00 0XA0 Yes Yes
SIMATIC C7-621 control system 6ES7 621-1AD01-0AE3 Yes
C7-DI/DO simulator module 6ES7 620-0AA00-4AA0 Yes
PS307+24V power supply 6ES7 307-1BA00-0AA0 No

A 03/99 Introduction
First Steps with the C7-621 7
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Checklist for startup
The following basic steps are necessary in order to start up the SIMATIC C7:
ÞInstall STEP 7 or STEP 7-Mini on a PC/programming device
ÞInstall ProTool or ProTool/Lite in STEP 7 or STEP 7-Mini on the PC/programming device
ÞConnect the PC/MPI cable (C7 ↔PC/programming device)
ÞConnect the C7 to the power supply (+24V)
ÞReset the memory on the C7-CPU and C7-OP
ÞSelect STEP 7-Mini on the PC/programming device and create the PLC program
ÞLoad the PLC program on the C7
ÞSelect ProTool/Lite on the PC/programming device and create the OP configuration
ÞLoad the configuration on the C7

Example machine: Quickmix A 03/99
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Example machine: Quickmix
Quickmix is a mixing and filling plant which takes orange and mango concentrate from two separate
tanks, mixes them with water to produce orange or mango juice and then bottles the finished product.

A 03/99 Example machine: Quickmix
First Steps with the C7-621 9
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The diagram shows the configurable aspects of the example machine. We will develop a PLC program for
this machine and get to know the steps involved in interfacing the integrated C7 operator panel.
Tn
Sealing
station
Quantity
sensor
Speed
Transport-
palett
UNLOADER
For fault elimination and
troubleshooting
-> PG-diagnostic functions
For machine monitoring
-> event messages
Stacked
pallets

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Preparations for programming
Start STEP 7
When you install STEP 7, an icon for the SIMATIC Manager appears on the Windows 95 desktop
and the SIMATIC program group is included in the start menu. Like any Windows 95 application, you
start the program by double-clicking the SIMATIC Manager icon or selecting
Start menu → SIMATIC
→ SIMATIC Manager .
If STEP 7 is started, cancel the STEP 7 Assistant: New Project.
Online help
If you an encounter a problem during programming, or if you want further information on a topic, press the
F1 key. This action starts the on-line help, where you can find explanations of various STEP 7 topics.
General settings
Before you start programming, you need to select one of two mnemonic options in the SIMATIC Manager
for displaying program statements.
You will find the Language catalog under Options → Customize. Select English as the language and
International mnemonics .
Select OK to close the dialog box and save the settings.

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You also have to set the PC/programming device interface. To do this, select the menu item Options
→Set PG/PC-Interface... Set the PC Adapter(MPI) in the dialog box that appears.
If the PC Adapter is not displayed in the window, you can install it now. Activate the Install button and
follow the instructions.
Enter the following settings as the PC/programming device interface Properties :

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For the local connection, select the COM port to which you connected the PC/MPI cable.
Save the settings with OK .
You can now start to create your project.
Create a project
Selectthemenuitem
File → New . In the dialog box that appears, create a new project with the name
Getstart.
Assign a hardware item to your project with the menu item Insert → Station → 2 SIMATIC 300
Station . The SIMATIC 300 Station(1) folder appears. Overwrite the name of this station with the new
name Quickmix.

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Define the hardware
Open the Quickmix station by double-clicking. Select the Hardware folder and open it by double-
clicking again.
In the Hardware Configurator call up the hardware catalog with Insert → Hardware Components .In
this box, select the
C7-621 from SIMATIC 300 → C7 . A short description of the control system is
displayed.
Double-click C7-621 to insert the device in slot 2 of the Hardware Configurator. You have now de-
fined your hardware. The window displays the MPI address of the C7 CPU (default MPI address 2)
and the address allocation of the integrated digital I/O.

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To save the configuration, select Station → Save and Compile .
To quit the Hardware Configurator, select Station → Exit .
The folder C7 CPU621, which contains the S7 program, is created automatically by the SIMATIC Mana-
ger. This S7 program file contains the Blocks folder with an empty OB1 organization block.
Open the folders by double-clicking.

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Program development
Start by programming the operating modes for the filling plant.
Conveyor control
I 124.0 Start
Manual/automatic mode
I 124.3 Manual/automatic
I 124.4 Accept mode
I 124.5 Jog forward
I 124.6 Jog back Bottle sensor Filling hopper Bottle sensor
I 125.0 Q 125.5 I 125.1
Q 125.3 Conveyor forward
Q 125.4 Conveyor back
Program the mode section as follows:
The start switch switches on the plant.
When the plant is switched on, the indicator lamp at output Q 125.0 is lit.
When the plant is switched on, the Manual and Automatic modes can be selected.
The mode setting is accepted via a pulse.
The mode setting should be displayed (Manual=Q 125.1, Automatic=Q 125.2)
To prevent malfunction, the previously selected mode should be deselected when the mode is
changed or the plant is switched off.
The conveyor can be moved forward and back in jog mode when Manual mode is active.
In your program, use the I/O addresses shown in the figure above.

Program development A 03/99
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Insert a block
Select the
Blocks folder in the SIMATIC Manager and select Insert → S7 Block → 3 Function Block
to insert a new function. In the dialog box that appears, allocate the internal identifier FC15.Select
STL as the programming language and close the dialog box with OK.
Edit the block
Now open the LAD/STL/FBD Editor from the SIMATIC Manager by double-clicking the
Function
FC15
you have just created.
Click Title beside block number FC15 and enter the block name Mode.Youcanenterablock
comment in the gray field directly below the block name.
Now assign the name Plant ON/OFF to Network 1. Do this by clicking Title beside the network
number. Once again, you can enter a network comment in the gray field directly below the network
name.
You can now insert the first program lines below the network comment. Use the mouse to click the
white area below the gray comment field. A box appears with the current cursor position. Please
remember to enter spaces between inputs (at least one space separating each of the command
code, operand and comment) in every program line, otherwise STEP 7 will not recognize the
statement and will highlight the line in red italics. Enter the following code in the first network:

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FC15: Mode
Network 1 : Plant ON/OFF
A I 124.0 // Start (if input 124.0 on /off)
= Q 125.0 // Plant ON (plant is then switched on/off)
Insert a network
To insert a new network, click on the tool bar. You will program the MANUAL mode in this
network.
Network 2 : MANUAL mode
A Q 125.0 // Plant ON
AN I 124.3 // and MANUAL mode selected (switch=0)
A I 124.4 // Confirm acceptance of selected mode
S Q 125.1 // Manual mode activated
A( // If
ON Q 125.0 // plant OFF (LED of DO not lit)
O I 124.3 // OR AUTOMATIC mode selected (switch=1)
)
R Q 125.1 // Then select Manual mode
Insert three further networks for the plant functions Automatic mode, conveyor forward and conveyor
back.
Network 3 : AUTO mode
A Q 125.0 // If plant ON
A I 124.3 // and AUTOMATIC mode selected (switch=1)
A I 124.4 // and acceptance of selected mode confirmed
S Q 125.2 // Then set automatic mode
A(
ON Q 125.0 // Plant OFF (LED of DO not lit)
ON I 124.3 // or Manual mode set
)
R Q 125.2 // Then select AUTOMATIC mode
Network 4 : Conveyor forward
A Q 125.1 // If MANUAL mode set
A I 124.5 // and Jog Forward is pressed (enabled)
AN I 124.6 // and Jog Back is not pressed (enabled)
= Q 125.3 // Then move conveyor forward
Network 5 : Conveyor back
A Q 125.1 // If MANUAL mode set
A I 124.6 // and Jog Back is pressed (enabled)
AN I 124.5 // and Jog Forward is not pressed (enabled)
= Q 125.4 // Then move conveyor back

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Save the block
The mode section of the filling plant is now fully programmed. Now save function FC15 by activating
the symbol .
For an executable program you still need to call FC15 in organization block OB1. Open OB1 in the
SIMATIC Manager and insert the following program line in the first network:
OB1 : Filling plant
Network 1 : Mode section
CALL FC 15
Now save organization block OB1 and close the LAD/STL/FBD Editor.
Set the operating mode


Now press the SHIFT 0keys on the C7-621 to select the system function menu.
Select the C7 CPU mode menu "KEY" by pressing F1 .
Select the STOP mode by pressing F3 . The STOP LED lights up.
If you have not yet entered a password, you are now prompted to do so. Password 100 is the default
setting when the C7 is delivered. Enter the digits 100 on the numeric keypad and press ENTER
.
Now, select STOP mode again.
Clear the C7 CPU memory / reset the C7 OP
Before you load a project into the CPU for the first time, you need to establish a neutral state on the
C7-621. This is achieved by deleting both of the integrated C7 flash memories and then restarting the
C7-621. Proceed as follows to delete the C7 flash memory:
Delete C7 CPU memory:
In the SIMATIC Manager select the
Accessible Nodes symbol. In the dialog window that
appears, double-click the folders
MPI=2 and Blocks to open them .
Select all OBs, FBs, FCs and DBs. Delete the selected objects from the C7 CPU. The load memory
of the C7 CPU is then cleared.
Select the folder
MPI=2 and copy the contents of the load memory into the C7 CPU flash memory by
activating
PLC → Copy RAM to ROM. This action clears the integrated CPU flash memory.
Close the
Accessible Nodes window .

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ResettheC7OP:
Activate transfer mode on the C7-621 by performing a reset:
Switch off the power supply to the C7-621.
Then press the keys ESC and and
Hold down the above keys
and switch the power supply on.
Do not release the keys until the message "Flash Test" appears on the display. A message is
displayed after the start-up tests are complete and the C7 OP has been reset.
Load blocks
There are two ways of loading blocks into the CPU. It is best to load blocks individually in large projects
when changes are made only to a small number of specific blocks. It is more practical to load all blocks in
smaller projects, or when changes have been made to a large number of different blocks.
Load all blocks:
Select the Blocks folder in the SIMATIC
Manager and click the symbol on the
tool bar once.
Load individual blocks:
Select function FC15 in the SIMATIC
Manager and load this block into the CPU of
the SIMATIC C7-621. You only need to click
the symbol on the tool bar once.
Then load organization block OB1 into the
CPU following the same procedure.
Now select the system function menu on the C7-621 by pressing SHIFT 0.
Select the C7 CPU mode menu "KEY" by pressing F1 .
Select RUNP mode by pressing F1 .TheRUN LED lights up.
If you have not yet entered a password, you are now prompted to do so. Password 100 is the default
setting when the C7 is delivered. Enter the digits 100 on the numeric keypad and press ENTER.
Now, select RUNP mode again.
Test your program on the C7-621 using the simulator. The functions of the plant described on Page 15
must be fulfilled.
You can simulate the pulse for accepting the selected mode by simulating a short on/off switch.

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Extend the program
Now extend the program with the filling process. The plant should operate as follows:
The conveyor drive motor is switched on (Q 125.3) in Automatic mode and remains switched on until
the stop switch opens or the sensor (I 125.0) detects a bottle.
The filling process starts when a bottle is positioned underneath the filling hopper. Filling is simulated
for a period of 3 seconds and is displayed via output Q 125.5.
When the bottle has been filled, the conveyor must start up again automatically and remain switched
on until the next bottle is detected or the stop switch is pressed.
After the plant is switched on, the full bottles should be counted via a further sensor (I 125.1).
To implement the process, call up your project offline in the SIMATIC Manager and insert
another
Function in the Blocks folder. Assign the internal identifier FC16,select STL as the
programming language and open the block.
Insert the following program lines in the individual networks:
FC16 : Filling cycle
Network 1 : Fill bottles
A I 125.0 // Bottle sensor 1 has detected a bottle
L S5T#3s // Load filling time (3s)
SE T 1 // Set extended pulse (3s)
A T 1 // When timer 1 reaches level 1
= Q 125.5 // Open inlet valve
Network 2 : Scratchpad memory for conveyor, AUTO
A Q 125.2 // If AUTOMATIC mode set
A( // and
ON I 125.0 // no bottles have been detected by bottle sensor 1
O//or
A I 125.0 // bottle sensor 1 has detected a bottle
AN T 1 // and filling process not running (valve closed)
)
= M 5.0 // Then the conveyor is moving
Network 3 : Count full bottles
A I 125.1 // Bottle sensor 2
CU C 1 // Increase counter by 1
A Q 125.0 // When plant is switched on
LC#0
S C 1 // Reset counter to 0
Programming of block FC16 is now complete. The block can be saved and loaded into the CPU.