Industrial Data Systems IDS 440 User Manual
Page 54
IDS440 Users Manual version 4.2
Diagnostic Tests
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display. The data will not transmit if the BUSY signal (TB4 pin 14) is active (TTL high).
Check the cable connections and the sending device.
Diagnostic Test 8: Test A/D
This test displays the (filtered) raw data being read from the A/D converter. Use this test
to determine optimum deadload and gain settings. If the number displayed at deadload is
less than 1000 or greater than 250,000 then use the deadload offset (parameter 19) to add
or subtract deadload from the signal input. NOTE: deadload offset is automatically set
using the calibration function 60. If the full-scale number displayed is less than 380,000
then use the “loadcell mv/V” parameter 1 to increase the gain. If the full-scale signal is
greater than 1,000,000 then use the “loadcell mv/V” parameter 1 to decrease the gain.
If no data is being displayed, the A/D converter is “locked up”. Turn power off and then
on and re-activate the test. Check load cell wiring for reversed signal or excitation
signals.
Press the PRINT key to scroll the AD test function from:
1. Display raw data (digital filter on).
2. Display and transmit via serial port 2, raw data (digital filter off).
3. Display A/D drift factor. Press the ENTER key to clear the drift factor to 0.
Press the CLEAR key to exit AD test.
Diagnostic Test 9: Perform internal memory test
This test writes data to memory and then reads it back to test for failed memory locations.
The existing data in memory is not affected by this test. The display prompts, “r TEST”
while the test is in progress. The display prompts “PAS 32” if the test is successful. If an
error is detected the “Exxxx” is displayed, where xxxx is the location of the error.
Diagnostic Test 10: Lamp Test
This test turns on all the LED displays and numeric display segments. Replace any LED
or display that does not illuminate. Press the CLEAR key to exit diagnostic test 10.
Diagnostic Test 11: Print the EAROM Configuration Table
This function sends the contents to the EAROM configuration memory to the printer.
Use this function to document your setup of the when installation is complete.
Diagnostic Tests 12 & 13: Loop Back Tests
These tests are used by the factory to test the serial ports transmit and receive functions.
Transmit and receive lines must be jumpered together and the clear-to-send must be
jumpered to data-terminal-ready for this test.