Industrial Data Systems IDS Scale Basic - Manual (Page 7)

Scale Basic 4.2E Tutorial
Test 5
Press the indicator’s CLEAR key to exit diagnostic test 4. Enter test number 6 and then press the
ENTER key. This test transmits data out of the indicator’s serial communications port 2. The
display prompts: “OUT 0”. Press the indicator’s ENTER key to send data. Serial Port 2
transmits “1234567890ABCDEF” and prompts “OUT 1” to indicate that 1 transmission has
occurred. The transmitted data should appear on the PC terminal screen.
If data does not appear:
Is the indicator sending the data? Use a volt meter between pins 2 and 5 on the indicators
terminal port 2. The volt meter should indicate a negative voltage (approximately -5V to -12V).
Press the ENTER key on the indicator (while diagnostic 4 is active). The volt meter should
deviate when data is transmitted. If not, the indicator’s RS232 transmitter is defective. Try
changing the transmitter IC (U1).
Is the PC receiving the data? Check the cable wiring.