Siemens SIMATIC Manual page 61

4th step: Test run
Step Action
1 In your project directory "Function blocks",
double–click on the table of variables "VAT1".
2 Go Online via PLC > Connect to > Configu-
red CPU.
3 Switch to monitoring mode via
Variable > Monitoring.
4 Switch the CPU to RUN.
5 Modify the setpoint "SP_INT"
6 Call the STEP 7 tool PID Control (see step 3).
Select IDB101 and click on "Online" mode. In
the "Test" menu, select and start the curve plot-
ter function.
Diagnostics/Fault elimination
Errors can occur as a result of operator faults or configuration conflicts. How to dia-
gnose such errors and messages is described in the manual, Chapter "Error hand-
ling and interrupts".
Sample :
The ZEn26_04_TF_____31xC_PID" project contains further samples you can use
"
for orientation. You can customize all samples according to your personal applica-
tions.
Automation System S7-300, Getting Started – Controlling
A5E00105534-01
Result
You are shown the table of variables for
monitoring and controlling.
The "STOP" status of the CPU pops up
at the lower right.
The "Status value" column displays the
actual values of the operands.
The "RUN" status of the CPU pops up at
the lower right. The controller is started.
You can monitor the output value
"OUTV" that is proportional to the setpo-
int "SP_INT".
You can view the graphic profile of some
of the control variables (actual value,
setpoint, control offset etc.).
5