Precision Digital PD6730X - Manual (Page 96)

PD6730X Vantageview Super Snooper Modbus Scanner Instruction Manual
96
TROUBLESHOOTING
The rugged design and the user-friendly interface of the scanner should make it unusual for the installer
or operator to refer to this section of the manual. If the scanner is not working as expected, refer to the
recommendations below.
Troubleshooting Tips
Symptom Check/Action
No display or faint
display Check power connection.
Press and hold Menu key for 5 seconds to check for Standby mode. If
“WAKEUP?” is displayed, press the Enter key to awaken the scanner from
Standby mode.
SafeTouch ® Buttons do
not respond
If is displayed, hold Menu SafeTouch button to leave power save mode.
If is flashing, wait 60 seconds to leave mechanical pushbutton lockout
mode.
If the cover was recently tightly secured, you may need to wait up to 2
minutes for buttons to self-calibrate to the new cover position due to
reflection of light off the polycarbonate window.
Verify Through-glass Button switch on display module is in ON position.
Sunlight can interfere with the sensors. It is recommended to shield the
window while operating the buttons by standing so as to block direct
sunlight.
Scanner channel
display NONE Verify that the polling parameters (slave address, register, etc) are correct. If
the channel is a math channel CV, verify the chosen math function does not
include any NONE selections or un-programmed Modbus PVs.
Long time between
channel value updates Verify all channels are communicating. Errors, combined with long timeouts
and high allowable number of failures when polling Modbus devices, will
combine to significantly delay the polling speed. Reduce the number of
allowable timeout errors to check that communications are successful, and if
there are errors, reduce the timeout if possible.
Rate display unsteady Increase low gate setting in Advanced menu.
Scanner displays span
error message during
scaling Verify minimum input span requirements
Scanner flashes
maximum display Check slave device registers are valid. Check math channels are not
exceeding maximum possible display. Check input signal is within scaled
range of 99999.
Rate display response
is too slow Check if gate settings can be lowered.
If the display locks up
or the scanner does not
respond Perform hard reset by removing the display module or by removing DC
power.
Backlight does not
appear. Backlight is intended for viewing assistance in dim lighting. It may not be
noticeable under good lighting conditions. Battery powered models turn off
the backlight after ten seconds of button inactivity.
Other symptoms Call Technical Support for assistance.
Note: Certain sequences of events can cause unexpected results. To solve these issues, it is best to start
fresh from factory defaults and map changes ahead of time, rather than at random.