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Load Event-Triggered Instruction (#30) command for more details on disabling key events.
12 TROUBLESHOOTING
12.1 T-Series General Troubleshooting Tips
Symptom Check
Green LED does not come on
Check the A/C wall plug, the 12V adapter and its connection to the device.
If the power is coming over the data cable, check the mini din connector
for bent or broken pins.
Green LED flashes
The power supply voltage is outside the range of 10 to 16V. It may either
be too low or too high. Some unregulated 12 V adapters may produce in
excess of 16 V. If the number of devices connected on a single 12 V
adapter exceeds its current capability, the voltage may drop below 10 V.
You may experience this problem when many motors on a single supply
move together. The load may exceed the maximum current available,
causing the voltage to drop. If you experience this problem with a single
device on a single unregulated 12V supply rated at over 300 mA, then the
problem is probably that the supply voltage is too high.
Communications do not seem
to work, the amber light does
not come on or flash
Make sure that you are on the correct com port. Check the baud rate, hand
shaking, parity, stop bit, etc. Check the cable and adapter for bent or
broken pins. Make sure you do not have a null modem adapter or cable in
the line. The serial to mini-din adapter comes in many varieties and many
have different pin connections. Check the adapter for continuity on the
proper pins by consulting the adapter pin-out diagram below. If you
encounter the problem when trying to control the device with your own
software, try using one of the demo programs from our website to verify
that the hardware is functioning properly.
The amber light comes on
briefly when sending a
command, but the device
does not reply.
Check baud rate, hand shaking, parity, stop bit, etc. Make sure that your
software does not transmit any control characters like line feed, spaces or
something else. The unit numbers may not be what you think they are.
Issue a renumber command, make sure that the computer does not transmit
anything else while the units renumber. Check that you transmit 6 bytes
and that the unit number and command are valid. If you encounter the
problem when trying to control the device with your own software, try
using one of the demo programs from our website to verify that the
hardware
The unit does not send replies
but otherwise works.
If you encounter the problem when trying to control the device with your
own software, try using a demo program from our website to verify that
the hardware is functioning properly. Make sure that the receiving part of
your code or commercial package is correct. Check baud rate, etc. Check
connectors for bent or broken pins.
The unit sometimes returns
fewer than 6 bytes.
This problem usually indicates a problem with the settings for your serial
port. Some serial ports are set to automatically recognize and remove
specific control characters such as carriage returns when they appear in the
RS232 receive buffer. When this happens, it appears as though the device
has not sent enough bytes, but really the controlling computer has just
removed some before you could read them. You will need to change the
serial port settings to fix the problem.
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