NKK SWITCHES IS-S04G1LC-S User manual

IS-S04G1LC-S User Manual
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IS-S04G1LC-S User Manual
Revision C
All Rights Reserved Worldwide
NKK Switches makes no warranty for the use of these products and assumes no responsibility for any errors, which may
appear in this document, nor does it make a commitment to update the information contained herein.
SmartDisplay is trademark of NKK Switches.

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Table of Contents
1.LCD 64x32 SmartDisplay Switch ................................................................................3
2.General IS-S04G1LC-S Features..................................................................................4
3.Electrical Specifications................................................................................................5
4.Images and Backlights..................................................................................................6
5.Operational Overview...................................................................................................8
6.Saving Images Using Engineering Kits Communicator...............................................9
7.Board Connections........................................................................................................10
8.ASCII Hex ....................................................................................................................11
9.Key Terms & Definitions …………………………………………………………….12
10. Warranty …………………………………………………………………………….13

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1.LCD 64x32 SmartDisplay Switch
The LCD 64x32 SmartDisplay switch is a graphic 64x32 pixels LCD display mounted in the key cap of
a tactile momentary pushbutton. It has an RGB backlight with 64 color options and 8 brightness level.
The picture below is available backlight colors of LCD64x32. The top 2 digits on each color are the code for back light color.
Backlight Color Code Table
SmartDisplay is ideal for use in applications with multiple, complex functions which would ordinarily
require many dedicated switches and complex training. The dynamic nature of the system allows for
instantaneous transitions from generalized lists of categories down to function specific actions. This
reduces the need for complicated controls and shortens the time for training by only displaying
relevant options and commands.
Backlight colors can be used to easily recognizable functions scheme.
NKK can supply subsystems with any number and configuration of LCD 64x32 switches. The
subsystem can have communications such as USB, Ethernet, CAN, RS232, RS485 etc. The
subsystem additionally can sense/control various status, gauges, and devices.
To help with development, NKK offer engineering kits with schematic and source code for all the
SmartDisplay’s. A free software, Engineering Kits Communicator, is available to test and download
images for communication to various controllers. Also, NKK Switches provides all the documentation
necessary to get up and running quickly on our website: https://www.nkkswitches.com/SmartDisplay-
resources/
Please contact [email protected] with your requirements or any question.

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2.General IS-S04G1LC-S Features
The IS-S04G1LC-S has four LCD64x32 switches that control four 12V lights or Fans. It has USB
communication for downloading images and set up. The current firmware is written for stand alone
operation. However, it is possible to modify the firmware to function under partial/complete control of
USB. For any changes to the firmware please contact [email protected]. Below are the
stand alone features.
Features:
•4 LCD64x32 control 4 lights/fans
•User defined images for ON/OFF
•User defined Backlight colors
•Pressing any of the switches toggle between ON/OFF corresponding control
•Eight level PWM control for each light or fan
•Holding any of the switches down for about 2.5 second allow for changing the PWM level
•Pressing the switch one and four at the same time allow changing the backlight intensity
•The setting of PWM levels and backlight intensity are saved
•Power Specs: 12V and maximum of 300 mA (does not include power for lighting or fan)
•USB for downloading images and backlights
•Firmware is written for stand alone operation. It can be changed to be under control of host.
•On-board temperature sensor
•Windows based Engineering Kits communicator software is available for communication.
oAccepts bitmap files, extracts the images and download them to the controller.
oAllows typing of commands and downloading to the controller.
oMessages to and from the controller are displayed in different colors.

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3.Electrical Specifications
This product is ESD sensitive and should be handled according to ESD procedure.
Input Voltage: 7V to 12V. Higher voltage of up to 30V maybe possible by adding a
heatsink to the voltage regulator.
Current: 100 mA to 250 mA. Depends on Backlight brightness and colors. Does not
include lights/fans current consumption
PWM period: 459 microseconds
PWM duties
Level
Duty cycle
1
1/36
2
2/36
3
3/36
4
8/36
5
18/36
6
23/36
7
28/36
8
36/36
Operating Temperature -10 to +50 Degree C. Backlight brightness level must be less than level 7
for ambient temperature above 35 degree C
Storage Temperature -20 to +60 Degree C
Temperature Sensor Accuracy +/- 2 Degree C. Please note the temperature sensed is a few
degrees above ambient due to the PCB temperature effect.

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4.Images and Backlights
Images can be created in any graphics software such as Paint, Photoshop, etc., or even user-created
software. All images can be saved onto the system by using the free Engineering Kits Communicator,
located on the NKK Website:
https://www.nkkswitches.com/
(Images can also be loaded onto the system with user-created software as long as the rules for the
images and communications are followed.)
To use Engineering Kits communicator, images must be saved in the proper format:
LCD 64x32
Monochrome bitmap (.bmp) 64x24 pixels
There are 11 images associated with the light/fan control system. (next page)
The Backlights can be modified by changing the LED codes in the Excel file and downloading the
Excel file using Engineering kits Communicator. The LED codes are stated in the backlight color code
table.
The last column is the temperature in degree C. Once the temperature gets above input temperature
all 4 fans turn ON.
;
command
For
Switch
#1 ON
For
Switch
#2 ON
For
Switch
#3 ON
For
Switch
#4 ON
For
Switch
#1 OFF
For
Switch
#2 OFF
For
Switch
#3 OFF
For
Switch
#4 OFF
for
Adjusting
PWM
levels
for
Adjusting
BACKLIGHT
levels
TEMP
Turn
FANs
ON
*R000055
FF
FF
FF
FF
33
33
33
33
CF
3F
32

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Factory Default Images and Backlights
Address
Image function
Factory default
Backlight
0001
Light/FAN 1 ON
FF
white
0002
Light/FAN 2 ON
FF
white
0003
Light/FAN 3 ON
FF
white
0004
Light/FAN 4 ON
FF
white
0005
Light/FAN 1 OFF
33
Green
0006
Light/FAN 2 OFF
33
Green
0007
Light/FAN 3 OFF
33
Green
0008
Light/FAN 4 OFF
33
Green
0009
PWM Level Adjustment
F3
Magenta
000A
LCD Backlight
Adjustment
3F
Light
blue
000B
Temperature Display
The factory default level of all PWM is 1 and Backlight brightness is 4.

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5.Operational Overview
Upon power-up the system start with all four lights/fans control in OFF state. Pressing any switch turn
ON the associated light/fan, pressing it again will turn OFF the associated light/fan. The changes
happen on the switch releases.
Press and hold any of the switches to change the brightness/speed of the associated light/fan. After
2.5 seconds the image of address 09 and the level will be displayed on the switch. Releasing and
pressing the switch will cycle through the 8 levels. When the switch is released for 4.5 seconds, the
selected level is saved, and the switch display the ON image.
Press switch #1 and #4 at the same time, switch #1 display image of address 10 and the backlight
brightness level. Releasing and pressing the switch #1 will cycle through the 8 brightness levels.
When the switch is released for 4.5 seconds, the selected brightness level is saved and the switch #1
display the status image of before the adjustment.
Press switch #2 and #3 at the same time, switch #4 display image of address 11 and the temperature
in degree Centigrade and Fahrenheit. The Switch #4 continue to display while a switch is depressed.
Once all the switches are released, the switch #4 display the status image of before the adjustment.
Any changes to brightness/speed and backlight brightness levels are saved and stay in affect till
change again.
When there is no switch activity for 20 seconds, the backlights will be turned OFF. While the
backlights are OFF pressing any switch cause the backlight to turn ON. The press to turn ON the
backlight do not affect the operation.

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6.Saving Images Using Engineering Kits Communicator
The Engineering Kits Communicator loads the images in alphanumeric order according to the image
files names. It auto-assigns a sequential address to each image. Be sure to keep this in mind when
naming images so that images are listed in the desired order. Avoid using symbols in the names as
some symbols interfere with alphanumeric ordering. All images to be loaded should be saved in a
single folder. The default starting address is 0001. This can be changed if needed.
To save images to the system:
1. Open the Engineering Kits Communicator.
2. From the drop-down menu at the top, select the COM port of the system (usually the last one).
3. Click the ‘Open Port’ button.
4. Press the call button and verify the system responds with ‘61’ in blue text in the left text box.
5. Select the image type “64x32 Mono” from the drop-down in the ‘Loading Images’ section.
6. Click the ‘Import Images’ button.
7. Navigate to the directory with all the images and select one and click ‘Open’.
8. Note that the images are loaded alphanumerically and automatically assigned addresses.
a. If some/all images do not show up in the image list after selecting the directory, it is
because the image is not in the proper resolution or file type (.bmp). Double-check the
image size is correct before downloading. If an image was skipped the images will load
one address off.
9. Click the ‘All selected images’ button at the bottom.
10.Wait for the ‘Success’ message. If the process fails, click the ‘All selected images’ button
again.

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7.Board Connections
Dimension: 3.2”x 3.67”
Cutout: PDF file

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8.ASCII Hex
All USB data is sent as ASCII hex as a safety measure to avoid being interpreted as a command.
ASCII hex is a normal data byte split into two halves and converted to their ASCII equivalent (see
www.asciitable.com). Therefore, all data received will be in the 0x30-0x46 number range, and
anything received outside that is invalid. For example:
Data to be sent is 0x3D.
Each nibble is assigned its own byte: 0x3 and 0xD.
Each of those bytes is converted to ASCII equivalent: 0x33 0x44 (0x33 is the ASCII number ‘3’. 0x44
is the ASCII letter ‘D’).
Receiving is the same process reversed:
Data received is 0x41 0x37.
Each byte converted from the ASCII equivalent is 0xA 0x7 (0x41 is the ASCII letter ‘A’, 0x37 is the
ASCII number ‘7’).
Combine the two bytes to get the data byte 0xA7.

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9.Key Terms & Definitions
Host Any computer, terminal, or other device that can communicate over the
USB line.
Byte An eight-bit hex value ranging from 00H to FFH (Decimal 0 to 255).
The bit format of a byte is: (B7 B6 B5 B4 B3 B2 B1 B0) where B7 is
most significant and bit B0 is least significant bit.
Nibble/Hex Digit A four-bit value ranging from 0H to FH. A byte consists of two nibbles.
ASCII A byte value representing a symbol.
Communication There are two formats to transmit a byte:
Format 1. Hex format - A hex byte is transmitted without any change to it.
[xxH] will be used to denote this.
All commands and some data are sent by using this format.
2. ASCII HEX format - Each nibble of the byte is converted to ASCII
code and sent as a byte. [xxAH] will be used to denote this.
For example, the hex byte 5AH is transmitted in two bytes, 35H and
41H. The ASCII value for 5is 35H and the ASCII value for A is 41H.
All addresses and most data are sent using this format.
Address A two-byte value ranging from 0001H to 000AH representing the 10
memory locations for images on the flash memory.

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10. Warranty
NKK SWITCHES LIMITED WARRANTY AND LIMITATION OF LIABILITY
The following limits our liability. Please read.
NKK Switches hereby warrants this product against any and all manufacturing defects for a period of one year
from the date of sale of this product to the original end user. NKK Switches’ liability in the event of such
defect is limited to repair or replacement of the defective products. NKK Switches disclaims any liability or
warranty obligation with respect to any product that is misused, damaged by any user, or not used in conformity
with all applicable product specifications.
NKK SWITCHES HEREBY DISCLAIMS ANY WARRANTY, EXPRESS OR IMPLIED, OTHER THAN
THAT CONTAINED HEREIN. NKK SWITCHES EXPRESSLY DISCLAIMS THE WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, AND SHALL HAVE NO
LIABILITY BASED ON OR ARISING FROM ANY CLAIM OF SUCH WARRANTY.
NKK Switches shall have no liability to any person for any incidental, consequential, special, punitive, or other
damages of any kind whatsoever relating to any use of this product.
USE OF THIS PRODUCT IN CONNECTION WITH ANY LIFE CRITICAL APPLICATION IS NOT
RECOMMENDED.