Learning units
3.4 4. Step: Linking blocks to the user program
First Steps in Commissioning CPU 31xC: Positioning with digital output
16
Getting Started, 08/2011, A5E00105533-03
8.
When the CPU is in STOP, select "PLC > Download to module ..." to download the
configuration.
The data are now downloaded from the PG to the CPU.
9.
Close HW Config with "Station > Close".
You are returned to SIMATIC Manager.
3.4
4. Step: Linking blocks to the user program
Procedure
1.
Open the project "ZDt26_03_TF_____31xC_Pos" in the catalog ...
\Siemens\STEP7\Examples via "File > Open ... > Sample projects" in SIMATIC Manager.
A window, divided into two sections, opens showing the title of the project.
2.
Double-click on the S7 program "Digital 1 First Steps".
The "Sources", "Blocks" and "Symbols" folders are displayed in the right-hand window.
3.
Double-click on the "Blocks" container.
All blocks of the S7 program are displayed.
4.
Copy all blocks from this folder to your project under "SIMATIC 300 Station > CPU 3xx >
S7 Program > Blocks".
Block
Name (in the toolbar)
Description
OB 1
CYCLE_EXC
Cyclic program
OB 100*
COMPLETE RESTART
Complete restart: Reset the control signals
FC 1
GETST_A
Getting Started DIGITAL
SFB 46
DIGITAL
System function block POS DIGITAL
DB 6
DI_DIGITAL
Instance DB for the SFB DIGITAL
VAT_GETST_A
VAT_GETST_A
Variable table
* Adjust the values for the switchover and shutdown difference in the block COMPLETE
RESTART (OB 100).
5.
In SIMATIC Manager, select "SIMATIC 300 Station > CPU 3xx > S7 Program > Blocks".
All blocks of the S7 program are displayed.
6.
Download all of the S7 blocks it contains via "PLC > Download to your CPU" (CPU in
STOP mode).
The program and configuration are downloaded from the PG to the CPU.
