Learning units
3.5 5. Step: Carrying out a dry run
First Steps in Commissioning CPU 31xC: Positioning with digital output
Getting Started, 08/2011, A5E00105533-03
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3.5
5. Step: Carrying out a dry run
Procedure
1.
In the "Blocks" directory, double-click on the variable table "VAT_GETST_d" in your
project.
The variable table for monitoring and modifying is displayed.
2.
Go online with "PLC > Connect to > Configured CPU".
At the bottom right, you will see that the CPU is set to "STOP" mode.
3.
Activate monitoring with "Variable > Monitor".
The current values of the addresses are displayed in the "Status Value" column.
CAUTION
The next two test steps start the drive.
You can stop the drive in one of the following ways:
Set the control value for the direction to 0 again and activate it
Set the control value for the drive enable to 0 again and activate it
Change the CPU to STOP
4.
Switch the CPU to RUN.
At the bottom right, you will see that the CPU is set to "RUN" mode.
5.
Try out the two following experiments. With "Variable > Activate Modify Values", you can
make the control values valid.
"Jogging" mode
Make the following settings:
MODE_IN = 1:
Select "Jogging" mode
DRV_EN = 1:
drive enable
SPEED:
Speed: 0 = Creep speed, 1 = Rapid traverse
Starting the drive:
DIR_P = 1: Jogging in plus direction
DIR_M = 1: Jogging in minus direction
Note: If both variables DIR_P and DIR_M are
activated, no positioning is possible.
You can monitor the following signal statuses in
the column "Status Value":
ST_ENBL = 1:
Start enable
MOD_OUT = 1:
Current mode "Jogging"
WORKING = 1:
Travel active
ACT_POS:
Current actual position
