1 Commissioning on Site[edit | edit source]
- Commission the Scalance switches as described in the corresponding article
- Lines before PLC 1500 Scalance X308
- Lines with PLC 1500 Scalance XC20x
- Make sure that the LEDs next to the ports for the fibre optic cables are lit up. If not, there is probably a problem with the connection of the fibre optic cables and the communication between the Scalance switches will not work. Fix this.
- Only necessary for X308: Connect your laptop to one of the ports of each Scalance X308 and assign the IP-address and the Profinet name according to the Simatic Manager HW-config using Indusol or Proneta.
- Check whether the Scalance switches accept the C-Plugs (Scalance X308 C-Plug).
- Probably you had disconnected the PLCs from the Profinet a while ago (Private:Commissioning Guideline). If you have already transfered the HW-config onto the PLCs, you can reconnect the PLCs to the Profinet now. Otherwise transfer the HW-config first.
- The PLCs will automatically assign the Profinet names and IP-addresses to each device in the Profinet according to the HW-Config. Check whether the assignment was correct.
- Let each device connected to the Profinet flash one by one using Indusol or Proneta and check whether the correct device is flashing.
- See section Troubleshooting for information on how to correct a wrong assignment.
2 Troubleshooting[edit | edit source]
2.1 How to correct a wrong assignment?[edit | edit source]
- Make sure that the Profinet devices are connected according to the Profinet topology in the Simatic Manager HW-config. Usually a wrong assignment happens, if the Profinet topology in reality is not matching with the Profinet topology in the Simatic Manager HW-config.
- Correct the assignment. Once a profinet device has been assigned, the PLC is not able to overwrite the assignment automatically.
- Option 1: Assign the correct Profinet name and IP-address manually using Indusol or Proneta.
- Option 2: Reset the device using Indusol or Proneta. The PLC will reassign the Profinet name and IP-address automatically. Devices react differently to a reset:
- CUs only reset the Profinet settings. The other configuration will stay as it is.
- Scalance switches will reset the whole configuration, including network settings.
- Tersus Dosing will only reset the Profinet module.
- PLC can only be reset without safety blocks inside.
- Flexotemp PCU can only be reset and set over the Flexotemp Manager.
3 Proper Plug Assembly[edit | edit source]
1. Use the green knife cassette 6GK1901-1GB01 (5.1 mm knife clearance) in the stripping tool. If your stripping tool was supplied with a yellow knife cassette, the cutting depth must be adjusted with the middle socket-head screw after fitting the new cassette!
2. Take the stripping tool in your right hand. 3. Measure the cable length against the measuring template. Use your left index finger as the limit stop.
4. Insert the cable into the stripping tool. Your left index finger is the limit stop. 5. Tighten the stripping tool fully.
6. To strip the insulation, turn the tool in the direction of the arrow - approx. 4 times for PVC insulation, - approx. 8 times for PUR insulation.
7. Keeping the stripping tool closed, pull it off the end of the cable along with the jacket and remnants of the shield.
8. If the white filler is not removed with the insulation, remove it and the transparent protective foil with your hand. 9. Cut off the dummy cores.
10. Spread out the wires according to the color markings on the contact elements of the connector.
11. Open the holder cover (e) until it latches and push in the wires according to their color coding* as far as the limit stop in the holder cover
12. Push the cable into position as shown in the picture (see arrows). Press down the contact elements as far as the limit stop to contact the wires.
13. Close the cover and turn the locking mechanism in the direction of the arrow as far as possible with your hand.
14. Insert a 2.5 mm screwdriver into the hole in the locking mechanism and turn it as far as the limit stop. 15. The connector is correctly locked when the opening of the locking mechanism is pointing to the side and the surfaces are flush with the surface of the connector.
16. Releasing the connector: Insert the connector into the socket and press the catch down. This will allow you to release the connector and remove it from the socket again afterwards. 17. Releasing the connector if there is little space: Proceed as above using a suitable screw driver (2.5 mm blade width) to press down on the catch. This will allow you to release the connector and remove it from the socket again afterwards.
Attention: When using devices without a collar, it is essential that the connected cable is provided with strain relief.
3.1 Common Faults[edit | edit source]
The most common fault is that the signal cables are too long.
This leads to the problem, that the shield is not well connected to the socket and the strain relief is not working correct.
If that happens, the spikes inside the plug go into the shielding and not into the cable isulation, as you can see in the picture below.
3.2 Grounding[edit | edit source]
Always take care that every Profinet cable is grounded inside the switchboard and at the device. The grounding point should be as close as possible to the entry point. This is necessary so that the EMC interference cannot harm the electronics.
