Retail Display Commands
The following table describes the Retail Display commands supported:
|
Command |
Function |
|---|---|
|
08 |
Backspace — moves the cursor to the left by one character. |
|
09 |
Horizontal Tab — moves the cursor to the right by one character. |
|
0A |
Line Feed — moves the cursor to one lower line. |
|
0B |
Home — moves the cursor to the home position. |
|
0C |
Clear Display — clears the display screen and moves the cursor to the home position. |
|
0D |
Carriage Return — moves the cursor to the left end of the same line. |
|
1F 43 |
Selects cursor ON or OFF. |
|
1B 40 |
Initializes the display. Returns to default. |
|
1F 28 67 01 |
Enables selection of font size for Single Byte characters |
|
1F 28 68 02 |
Enables or disables Double Byte character mode |
|
1F 28 67 0F |
Selects a Double Byte Code Page |
|
1B 52 |
Selects a Single Byte International Font set |
|
1B 74 |
Selects a Single Byte Code Page |
|
1F 02 |
Moves the cursor up one by one line |
|
1F 03 |
Moves the cursor horizontally by one space |
|
1F 01 |
Enables overwrite mode |
|
1B 58 |
Enables adjustment of brightness level of whole display screen. |
Backspace
|
Format |
08 |
Description
This command moves the cursor to the left by one character.
Horizontal Tab
|
Format |
09 |
Description
This command moves the cursor to the right by one character.
Line Feed
|
Format |
0A |
Description
This command moves the cursor down to the lower line.
Home
|
Format |
0B |
Description
This command moves the cursor to the home position.
Clear Display
|
Format |
0C |
Description
This command clears the display screen and moves the cursor to the home position
Carriage Return
|
Format |
0D |
Description
This command moves the cursor to the left end of the same line.
Enable/Disable Cursor
|
Format |
1F 43 nn where nn = Display cursor ON/OFF •00 — Cursor OFF •01 — Cursor ON Default: nn = 00 |
Description
This command causes a flashing cursor to be used whenever the Display On state is in force. The cursor is displayed by 1x8 dots (vertical).
Initialize Display
|
Format |
1B 40 |
Description
This command returns the VFD module into its default status. All configurations made to the VFD module returns to its default settings. Codepage turns back to CP 437 at 5x7 dot pixels.
Set Font Size
|
Format |
1F 28 67 01 nn where nn = font size •01 — 5x7 dot character •02 — 8x16 dot character Default: nn = 01 |
Description
This command toggles between a 5x7 dot character and 8x16 dot character. This command is also required to enable the 16x16 dot double byte character mode.
Note: It is recommended that before sending a displayable character, this command must be sent first.
Enable/Disable Double Byte Character Mode
|
Format |
1F 28 67 02 nn where nn = enable/disable double byte mode •00 — Disable double byte character mode •01 — Enable double byte character mode Default: nn = 00 |
Description
This command sets the display to Double Byte character mode.
Note: The command 1F 28 67 01 02 (set font to 8x16 mode) is required before sending the double byte mode enable command. This is followed by the Double Byte Code Page Select 1F28 67 0F n to select the desired code page. Refer below for an example.
|
Select the font size |
1F 28 67 01 02 |
|
Enable Double Byte Mode |
1F 28 67 02 01 |
|
Select Double Byte Code Page |
1Fh 28h 67h 0Fh 02h |
|
Send Double Byte Character |
B0 A2 (double byte character code) |
Double Byte Code Page Select
|
Format |
1F 28 67 0F nn where nn = double byte character code page font •00 — Japanese JISX0208 (Shift JIS) •01 — Korean (KSC5601-87) •02 — Simplified Chinese (GB2312-80) •03 — Traditional Chinese (Big-5) Default: nn = 01 |
Description
This command selects the double byte code page. This command requires the Set font size 1F 28 67 01 02 command & Enable double byte character mode 1F 28 67 02 01. Refer below for an example.
|
Select the font size |
1F 28 67 01 02 |
|
Enable Double Byte Mode |
1F 28 67 02 01 |
|
Select Double Byte Code Page |
1Fh 28h 67h 0Fh 02h |
|
Send Double Byte Character |
B0 A2 (double byte character code) |
Single Byte International Code Page Select
|
Format |
1B 52 nn where nn = International Font Set •00 — America •01 — France •02 — Germany •03 — England •04 — Denmark 1 •05 — Sweden •06 — Italy •07 — Spain 1 •08 — Japan •09 — Norway •10 — Denmark 2 •11 — Spain 2 •12 — Latin America •13 — Korea Default: nn = 00 |
Description
This command loads and modifies the International Codepage 437 into a territory‑specific code page. This command is only applicable for International Code Page and is not the same as the Code Page Select function 1B 74 n.
Single Byte Code Page Select
|
Format |
1B 74 nn where nn = Code Page Select •00 — CP437(USA – Euro std) •01 — Katakana – Japanese •02 — CP850 (Multilingual) •03 — CP860 (Portuguese) •04 — CP863 (Canadian – French) •05 — CP865 (Nordic) •16 — CP1252 (Latin 1) •17 — CP866 (Cyrillic) •18 — CP852 (Latin 2) •19 — CP858 (International) Default: nn = 00 |
Description
This command loads the selected code page stored in the VFD module.
Vertical Scroll
|
Format |
1F 02 |
Description
This command moves the cursor up one line at a time. Characters move up one line once the display is filled with the 128 characters (for 8x16 mode). All impending characters sent to the VFD display start at the last line of the display.
Note: The Command 1F 01 is used to revert the scrolling back to the default Overwrite Mode.
Horizontal Scroll
|
Format |
1F 03 |
Description
This command moves the cursor horizontally one space at a time. The position of the cursor determines the line where the characters scroll. The characters above or below the current cursor position are not affected.
Note: Once this command is activated, all impending characters are in horizontal scroll mode, unless it is cancelled by the Overwrite Mode 1F 01.
Overwrite Mode
|
Format |
1F 01 |
Description
This is the default mode of the VFD Display. This command overwrites or replaces the existing characters of the VFD Display once the display is filled with all the 128 characters (for 8x16). Once all 128 is filled, all impending characters start back at position zero and continue to write forward.
Brightness Level Adjustment
|
Format |
1F 58 nn where nn = Brightness level setting •01 — 12.5% •02 — 25% •03 — 37.5% •04 — 50% •05 — 62.5% •06 — 75% •07 — 87.5% •08 — 100% Default: nn = 08 |
Description
This command adjusts the brightness of the entire display. Individual characters or display positions are not adjusted.
