This page describes the setup and use of the recommended BLM communications protocol for VTube.

• The BLM SVNET protocol is the PREFERRED PROTOCOL for CORRECTING the BLM.
  
  
• This protocol uses standard Windows networking.
  
  
• Typically, there is a charge from BLM for this protocol to be switched on. The BLM catalog number is "SW0453". Contact BLM for the price and how to have it switched on in the bender. A BLM technician will work with your IT department to install and enable the protocol if you purchase it.
  
  
• This protocol can send and receive corrected bender XcYcZc, part number, diameter, wall thickness, cut length, and radii values.
  
  
• The communication is bi-directional to and from the bender. It is possible for VTube-LASER to SEND and RECALL XcYcZc bender data to/from the BLM control.
  
  

1. Enter the VTube System Options menu.
   
   
2. Enter the Global List tab menu.
   
   
3. Enter the Setup Benderlink Network menu.
   
   

1. Choose an unused row in the grid for a new BLM bender setup. (Click on the image at the right to see a zoomed image.)
   
   
2. Assign a bender name that will help operators identify what this bender is. This text will be displayed at the top of the Bender Setup menu.
   
   
3. Set the protocol to BLM SVNET.
   
   
4. Enter the path to the shared drive or folder in the NetPath field. Use the same location as the BLM setup. VTube accepts UNC names as well as regular paths with drive letters.
   
   
5. Enter the IP address in the PING IP ADDRESS field if it is a fixed field. (This is not required. It allows VTube to ping the address to see if the network location is active before trying to open communications.)
   
   
6. Most BLM benders handle Positive rotations as a Clockwise motion, so you will probably need to enter "YES" for these options (so that the rotations are not corrected in the wrong direction).
   
   
7. Press Close to save the settings. VTube will save these values to a global configuration file that will not change unless you change them in this grid.

Bend the Part on the BLM then Open Measuring Center Communications in VGP3D

Click on the measuring center image to the right of the part number.

This will display a small communications window on top of the VGP3D user interface.

The window will allow the BLM to respond to requests for communication from VTube-LASER.

Measure the tube with VTube-LASER

Measure and align the tube to determine if it qualifies by falling within the envelope tolerance for the tube shape.

In the VTube-LASER screen shot, you see the actual result of the first tube not qualifying in shape. The red cells in the tangent point grid on the lower left show that the measured tube centerline is out-of-tolerance.

Follow these steps in the VTube-LASER:

Press the "BENDER SETUP button in the Navigation Pane.

These steps assume that you have programmed a part into the bender and that you have measured and aligned a part.

STEP 1 - Set the correct bender number at the top of the window. The BLM SVNET bender icon should display if you have already set up the bender protocol in the Benderlink grid.

STEP 2 - Click on the "RECALL LRA from BENDER" button.

VTube-LASER will probably warn you that the incoming data count and part number does not match what is in VTube-LASER.

• It is very important that you allow the incoming bender data to increase the bend count to whatever is at the bender.
  
  
• If you want the Part Number at the bender to be left untouched, then just accept the incoming part number and use it for transfer from this point forward.

After the RECALL, the blue columns should show the data that is programmed in the BLM control.

This ensures that corrections are being made to the correct foundational data. If the blue column data does not match the bender at correction time, then it is probable that the bender will not be corrected properly.

SAVE the Correction data to the file for the BLM by pressing AUTO SEND BENDER CORRECTIONS.

STEP 1 - Click on Bidirectional Communication

STEP 2 - Click on AUTO SEND BENDER CORRECTIONS.



This will change the contents of the BLM XYZ to the values from the VTube ORANGE cells.

If you sent the correction data (the orange columns of data) from VTube-LASER to the BLM, then you can close the BLM communications window at the BLM and then check the new XYZc bender values. Be sure that they match the data in the orange cells in VTube.

• The XYZc data will be updated. Run the simulator with the new data.
  
  
• Bend the corrected part.
  
  
• In the VGP3D software, press the measuring center icon again to be ready for communications from VTube-LASER in case another correction is needed.
  
  
• Take the part back to VTube-LASER to measure it again for qualification. (Repeat the process from "Bend the Part on the BLM then Open Measuring Center Communications in VGP3D" above.)

• A RECALL from the BLM must be performed first so that VTube learns the data that is currently used to bend the part that you just measured.
  
  
• The number of bends must match in both VTube-LASER and BLM.