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PLC System Start-Up and Program Test
Step 3: Testing the signal inputs (peripheral)
- Insert the fuse for the signal sensors. Leave the fuses for the actuators and the power
circuits disconnected.
- Activate all sensors in sequence.
- You can scan all inputs using the "STATUS VAR" programmer function.
If the sensors function properly and their signals are received, the appropriate LEDs must light up
on the I/O module.
Step 4: Testing the signal outputs (peripheral)
- Insert the fuse for the actuators. Leave the power circuits of the actuators disconnected.
- You can force each output using the "FORCE VAR" programmer function.
The LEDs of the forced outputs must light up and the circuit states of the corresponding actuators
must change.
Step 5: Entering, testing and starting the program
Leave the power circuits for the actuators disconnected.
- Enter the program using the "INPUT" programmer function. You can enter the program in
the "STOP" or "RUN" mode.
The red "ST" LED or the green "RN" LED lights up. A battery must be installed if a RAM
submodule is used.
- Test the program block by block and make any necessary corrections.
- Dump the program in a memory submodule (if desired).
- Switch the PLC to "STOP"
- Switch on the power circuits for the actuators.
- Switch the PLC to "RUN".
The green "RN" LED lights up and the PLC scans the program.
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S5-115U Manual
EWA 4NEB 811 6130-02b
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