User Manual

CellNet Pit MIU Master Rev. 1.0

04/14/99 3:13 PM

TROUBLESHOOTING

Six-Wheel Encoder Normal Operation

If the odometer reads 123456, the display should be 1 2 3 4 5 5.

Note that the last digit displayed is a five if the last digit on the odometer is five through nine. The

last digit displayed is a zero if the last digit on the odometer is zero through four.

Four-Wheel Encoder Normal Operation

If the odometer reads 123456, the display should be 1 2 3 4 0 0.

Abnormal Operation

Below are examples of abnormal operation for four-wheel encoders. Abnormal operation for six-

wheel encoders is similar except that digits occupy all six positions.

If an (H) or a ( - ) occurs on any of the four positions, the CellNet-Ready Pit MIU (ProRead Only)

will transmit the data as follows:

Examples: 1 2 E 4 0 0 or 1 2 b 4 0 0

If the wire between the CellNet-Ready Pit MIU (ProRead Only) and the encoder is cut or reads as

open, or if the encoder is not programmed in a three-wire TDI format, the MIU will transmit the

following data:

Example: AAAAAA

SECTION 5

TESTING AND MAINTENANCE

After the CellNet-Ready Pit MIU (ProRead Only) has been installed and wired, follow these steps

to verify that the MIU is working properly:

1. Activate the MIU by holding the magnet for two seconds against the arrow on the Main

housing. The arrow is just to the right of the Terminal Screws.

2. Use a CellNet installation tool to verify the transmission from the Pit MIU.

3. Verify all electrical connections.

4. Test the installation again.

5. If a Pro-Read

Encoder Register is used, ensure the unit is programmed in the 3-wire, ten digit

TDI format.

6. Verify all electrical connections.

7. Reactivate the MIU. (See Step 1)

8. If a problem still exists, install a different MIU.