Hardware Troubles - Omron NB3Q-TW_B Startup Manual

6 Maintenance and Troubleshooting
6-3-3

Hardware Troubles

1
How to calibrate the system time of the PT
There are 2 methods to calibrate the time:
Method 1: there are 2 DIP switches on the backside of the PT. Tweak both of the DIP switches 1
and 2 to ON, reboot the PT, then the Setup Screen turns up, as shown below: (take NB5Q-
TW00B as an example)
Click the time component, input the current time.
Method 2: Create a new project, and place 7 Number Input components on the screen, with
each of the addresses LW10000~LW10006 respectively corresponding to the Second, Minute,
Hour, Day, Month, Year and Week The time can thus be calibrated through changing the values
of these 6 Number Input components.
2
The time cannot be saved or the display is not accurate
If the time cannot be saved, the most likely cause is that the battery runs low. When the PT is
disconnected from the power supply, the RTC needs to be energized by the battery on the PT
mainboard. When the battery voltage descends to an unsustainably low level, it may cause that
the time cannot be saved or the display is not accurate, therefore requiring the Unit to be sent
back to replace.
3
Why is there no response from touch-control
When operating the touch panel, if clicking a component on the screen does not receive a
proper response, the first thing you have to do is to make sure that this button is indeed
operable. If it is confirmed, the problem may result from a touch-control shift. The touch panel is
a panel of 4-wire precision resistors, and because the resistors are subject to impacts from
temperature, humidity and also their own characteristics, it's recommended that touch-control
calibration be carried out yearly.
Calibration method: tweak the DIP switches on the backside of the PT, SW1 to OFF, SW2 to
ON, and restart the PT. A "+" will appear on the screen. Click it, the "+" will shift after the PT
responds. You have to click again and after a total of 5 consecutive clicks, the PT will prompt
you whether the calibration is a success. If it is a success, the PT will skip to the user program
screen, while if it is not a success, the "+" will pop up again, requiring another round of
calibration.
Note After a successful calibration, the DIP switch 2 needs to be set back to OFF, or not, the system will
prompt you for a calibration every time you turn on the power supply.
6-30 NB-series Programmable Terminals Startup Guide Manual(V109)