Instruction manual

ControlWave Micro Display/Keypad Instruction Manual (D5135)
Chapter 5 – Troubleshooting Tips
Problem Possible Cause(s) and Solution(s):
Display is blank
 No keypad activity – timeout period has expired.
Press any key.
 Controller is powered off. Power on the controller.
 Display interface cable is disconnected from the
controller. Re-connect the cable.
 Application is not configured to support the
display/keypad. Configure DISPLAY function block in
your ControlWave project. (See ControlWave
Designer online help for DISPLAY function block for
information on how to do this.)
Display is too
dim (or too
bright)
 Display brightness is out of adjustment. Adjust
display brightness screw shown in Figure 2-1 or
Figure 2-2.
Cannot change
variable values
 Wrong type of keypad. You must have 25-button
keypad.
 Insufficient privileges. You must log on with
read/write security privileges.
 Variable is manual inhibited – “MI” shows on display.
Press [OPER I/E] button to manually enable the
variable.
Keypad inactivity
timeout is too
short (or too
long)
 Inactivity timeout configured incorrectly. Re-configure
DISPLAY function block iiDisplayBlankTime
parameter to appropriate value. (See ControlWave
Designer online help for DISPLAY function block for
information on how to do this.)
Automatic scroll
time for variables
is too fast (or too
slow).
 Scroll time configured incorrectly. Re-configure
DISPLAY function block iiScrollTime parameter to
appropriate value. (See ControlWave Designer
online help for DISPLAY function block for
information on how to do this.)
Values not
scrolling
 Scrolling is in HOLD mode. To resume scrolling:
For dual button keypad, press the down arrow ITEM
button.
For 25-button keypad: Press the [F1] button.
Issue Nov-2010 Troubleshooting Tips 5-1