IDS440 Users Manual version 4.2 Diagnostic Tests
53
Diagnostic Test 1: Serial Com Port 1 - Display Input Data
This test displays serial data as it is received by serial communications port 1. The
numeric display has limited alpha display capability, however numeric and some alpha
characters are legible. If all data being received is unintelligible, the baud rate is
probably incorrect. If nothing is displayed on the display, then check the following:
1. RS232/Current loop switch on the main circuit board.
2. Cabling between the communicating units.
3. Make sure the sending unit is actually sending data.
Press the CLEAR key to exit diagnostic test 1.
Diagnostic Test 2: Serial Com Port 1 – Display Errors
This test displays the number of framing and parity errors that are detected in the input
data stream. The error count is set to zero when entering this test. New errors are
displayed as “PxxFxx” where Pxx is the number of parity errors and Fxx is the number of
framing errors. If the error count exceeds 99, the display will remain at 99.
Press the CLEAR key to exit Diagnostic test 2.
Diagnostic Test 3: Serial Com Port 1 - Transmit Data
This test transmits data out of serial communications port 1. The display prompts: “OUT
0”. Press the ENTER key to send data. Serial Port 1 transmits “1234567890ABCDEF”
and prompts “OUT 1” to indicate that 1 transmission has occurred. Press the ENTER key
again or press the CLEAR key to exit diagnostic test 3.
NOTE: If the error message “Er CtS” appears, the data cannot be transmitted because the
handshake signal, clear-to-send (TB1 pin 7), is low or not connected. If clear-to-send is
not used jumper it to data-terminal-ready (TB1 pin 4)
Diagnostic Test 4: Serial Com Port 2 - Display Input Data
This test displays serial data as it is received by serial communications port 2. The
numeric display has limited alpha display capability, however numeric and some alpha
characters are legible. If all data being received is unintelligible, the baud rate is
probably incorrect. If nothing is displayed on the display, then check the following:
1. RS232/RS485 jumper on the main circuit board.
2. Cabling between the communicating units.
3. Make sure the sending unit is actually sending data.
Press the CLEAR key to exit diagnostic test 4.
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