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2. On the requesting device, transmit one or more bytes to the iVu sensor.
• If the data byte values appear correct and the number sent by the requesting device matches the number received by the iVu
sensor, then the transmit/receive functionality is working properly.
• If the connection is incorrect (electrically) or if the baud rate is mismatched, no bytes will appear in the upper field on the Port
Status screen.
• If the connection is correct (electrically), bytes will appear in the upper field of the Port Status screen in the order they were
received.
• If the Port Status: Errors at the bottom of the Port Status screen highlights red, then the connection is correct electrically but
there is likely a settings mismatch between the iVu sensor and the requesting device. Verify the settings on both devices.
• If the bytes appear with no errors but appear incorrect or there are too many or too few, then the port settings (for example,
baud rate) are likely mismatched in a way that does not generate serial hardware errors. Verify the settings on both devices
match exactly.
Verifying Basic Transmit Functionality
The iVu command channel will only send response frames to the requesting device if it receives a valid end-of-frame delimiter from the
requesting device. To verify transmit functionality:
1. Transmit an end-of-frame delimiter sequence from the requesting device to the iVu sensor. For example, in a terminal program,
simply hit Enter.
If a valid end-of-frame delimiter is received, the iVu sensor will immediately transmit a short error message back to the requesting
device (for example, ERROR 10000_COMMAND_MISSING).
2. Verify that the number of bytes sent by the requesting device are the same as the number shown in the lower field of the Port
Status screen on the iVu sensor. Go to the Main Menu > System > Communications > Serial I/O > Port Status screen.
iVu Plus User's Manual
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