Step by Step 6B Setup Procedure for LabVIEW
Hardware: Signal Conditioning Other>>6B Series
Problem: How do I setup an Analog Devices 6B Module in LabVIEW?
Solution: The following are instructions for configuring and testing one Analog Devices 6B module using the LabVIEW drivers.
- Install the W1 jumper to force the module in the left-most slot to a known state.
- Make sure there is no power to the 6B backplane.
- Put a 6B module into the left-most slot (closest to circuitry) and tighten the retaining screw.
- Connect power to the backplane using an Analog Devices Power Supply. The green LED on the backplane should light at this point.
- Connect a sensor to the terminal block for the installed module. There are four screw terminals on the block. The middle two are the inputs. The low-side of your signal goes on the left, and the high-side of you signal goes on the right.
- Connect the backplane to your computer using a serial cable.
- Go to LabVIEW
- Call "AD6B Config Mod & Board via Jumper.VI" setting the module to the desired address (other than 0), baud rate, checksum status, range, format, integration time, and slew rate.
- Remove power from the backplane.
- Remove the W1 jumper.
- Re-apply power to the backplane.
- Call "AD6B Map Modules & Boards.VI" using the appropriate COM Port and Baud Rate. You should see the module appear in the table at the appropriate address, with the appropriate settings.
- Call "AD6B Input Module - Read Data.VI" using the appropriate COM Port and address. You should see the applied voltage in the indicator.
- CONGRATULATIONS!!! You have just developed a simple 6B signal conditioning system.
You can move your module out of the first slot to configure other modules in the first slot. The module will retain it's address that was assigned, so make sure you assign unique address to the next modules.
If you have a daisy chained configuration with multuiple backplanes, the procedure is the same. In addtion,
- Make sure the RS-485 connections are wired.*
- Make sure the W1 jumper is out on all the backplanes except for the backplane your currently configuring with a module.
- Make sure the module is in first position of the backplane.
Once a module is configured, you can even move it to other backplanes and still have it be detected, so you could configure all your modules on the first back plane and just move them where you need them after they are configured.
* "It is recommended that the Belden 9842 cable (or equivalent) be used to connect two backplanes/boards using the RS-485 connector. This cable contains two twisted pairs of foil-shielded wire bundled together." (6B Series' Users Manual 2-17). The foil shields can be wired to the appropriate GND terminals, while the two wires inside can be wired to the adjacent two terminals. Terminals 1 through 4 are RTS-, RTS+, DATA-, and DATA+ respectively.
Related Links: General Information about 6B Backplanes
Attachments:
Report Date: 11/29/1994
Last Updated: 10/22/2004
Document ID: 03S8FRIE
