14
4.6
Communication
When communication of either text or commands is interrupted, try the steps below.
?
First, check the communication cable for continuity.
If you don't have an ohm meter, try using a
different communication cable. If you are using a PC try using a different Com/USB
Port.
?
Next, please ensure that the display module is set to communicate on the protocol that you are
using, by checking the Protocol Select Jumpers.
?
In serial and USB protocols, ensure that the host system and display module are both
communicating on the same baud rate.
The default rate for the display module is 19200 bps.
?
Match Rx from the GLK24064-16-1U
to the transmitting pin from your host and the Tx pin to the
receiving pin.
?
If you are communicating to the display via I2C*
please ensure that the data is being sent to the
correct address.
The default slave address for the display module is 80.
?
In I2C mode, connect Rx to the clock
line of your controller and Tx to the data output.
?
Unlock the display.
See the Set and Save Data Lock command for more info.
?
Finally, you may reset the display to its default settings using the Manual Override procedure
outlined below.
*Note:
I2C communication will always require pull up resistors on SCL and
SDA of one to ten kilohms.
4.7
Manual Override
Should the settings of your display become altered in a way that dramatically impacts usability, the
default settings can be temporarily restored. To override the display, please follow the steps below.
1.
Disconnect power from your display.
2.
Place a jumper on the two manual override pins next to the keypad header.
3.
Reconnect power to your unit, and wait for the start screen before removing the override
jumper.
4.
Settings will be temporarily**
overridden to the defaults listed in the Manual Override Settings
table. At this point any important settings, such as contrast, backlight, or baud rate, should not
only be set but saved so they remain when the override is removed.
Parameter
Value
Backlight
255
Contrast
128
Baud Rate
19200
I2C Address
80
Table 14: Manual Override Settings
**Note:
The display module will revert back to the old settings once turned off,
unless desired settings are saved.
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相关PDF资料
GLK24064-25-WB-V
LCD GRAPHIC DISPL 240X64 BLU/WHT
GLT240128-FGW-VPT
LCD TOUCH 128X240 WHT/GRY
GM2BB50BM0C
LED WHITE 5000K 150MA 0.5W
GM5YJ01210A
LED ORANGE CLEAR 6050 SMD
GU128X128D-3900B
VACUUM FLUORESCENT DISPLAY
GU144X16D-7053B
VACUUM FLUORESCENT DISPLAY
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MODULE VF GRAPHIC DISPLAY 160X32
GU160X80E-7900B
VACUUM FLUORESCENT DISPLAY
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