Rockwell Automation 1747-L40 SLC 500 Fixed Hardware Style - Manual (Page 82)

Chapter 6
Starting Up Your Control System
6–9
3. Transfer the program into the processor.
A. Place your programming device online.
B. Place the processor in Program mode.
C. Select download function when using the Hand–Held Terminal or the
restore function when using Advanced Programming Software.
4. Verify the online program transfer.
A. Select monitor file function.
B. Cursor through the program to verify that you selected the right
program.
5. Conduct a single–scan program test.
A. Select the monitor file function and place the cursor on the first rung.
B. Select the Test mode.
C. Select Single–Scan (SSN) test. In this test mode, the processor
executes a single operating cycle, which includes reading the inputs,
executing the ladder program, and updating all data without energizing
the output circuits. However, the monitor file function will identify
the output status as if the outputs were enabled.
Timers are also incremented a minimum of 10 milliseconds each
single scan.
D. Simulate the input conditions necessary to execute the current
monitored rung of the program. If it is not practical to manually
activate the input device, use the force function to simulate the proper
condition.
!
ATTENTION: Never reach into a machine to actuate a device,
unexpected machine operation could occur.
E. Activate a single operating scan as outlined in the programming device
user manual.
F. Verify the intended effects on the output instructions for that rung and
overall program logic effects.
G. Select the next program rung and repeat test procedures as listed above
until the entire program has been tested.
6. Conduct a continuous scan program test.
Once the individual single scan rung tests have been completed and
proper program operation verified, a continuous scan test might be
appropriate before motion checkout.
This mode simulates the controller Run mode without energizing the
external outputs.