VK202-25 Matrix Orbital, VK202-25 Datasheet - Page 24

• Manufacturer Part Number: VK202-25
• Description: VFD ALPHA/NUM DISPL 20X2 SER/I2C
• Manufacturer: Matrix Orbital
• Series: VK202-25r

Specifications of VK202-25

• Outline L X W X H: 116.00mm x 37.00mm x 29.48mm
• Viewing Area: 89.75mm L x 11.50mm W
• Display Format: 20 x 2
• Display Type: Character
• Format: 5 x 7 Dots
• Character Size: 4.70mm H x 2.40mm W
• Interface: Serial
• Operating Temperature: -20°C ~ 70°C
• Product: Character Display Modules
• Character Count X Line: 20 x 2
• Module Size (w X H X T): 116 mm x 37 mm x 29.48 mm
• Operating Temperature Range: - 20 C to + 70 C
• Dot Format: 5 x 7
• Viewing Area (w X H): 89.75 mm x 11.5 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Number Of Dots: -
• Lead Free Status / Rohs Status: Details
• Other names: 635-1020

6.1.9 Read module type (254 55)
This command will return a 1 byte hex value, over the RS-232 interface only, the model type value of the
module. Values for various modules at the time of this publication are as follows:
6.1.10 Set RS232 port speed (254 57 [speed])
This command sets the RS232 port to the specified [speed]. The change takes place immediately. [speed] is
a single byte specifying the desired port speed. Valid speeds are shown in the table below. The speed can be
manually reset to 19,200 baud in the event of an error during transmission (including transmitting a value
not listed below) by setting the "manual override" jumper on the module during power up (see section 1.7).
This command is ignored until this jumper is removed again.
6.1.11 Set Serial Number (254 52 [byte1] [byte2]
Modules may be delivered with the serial number blank. In this case the user may set the desired 2 byte
serial number using this one time only command.
Upon the execution of this command, the module will echo these two bytes back over the RS-232 interface.
The serial number may be set only once. Any future attempt to execute this command will result in no
change and the module will return to the originally set serial number.
6.1.12 Read Serial Number (254 53)
This command will return a 2 byte value, over the RS-232 interface only, the serial number of the module as
it was previously stored.
VK202-25 rev. 05
GLK12864-25 - 0x14
GLK12232-25 - 0x22
GLC12864 - 0x11
VK202-25 - 0x0E
LK202-25 - 0x08
VFD2021 - 0x0B
LK402-12 - 0x33
LCD0821 - 0x01
LCD2041 - 0x05
Speed Value
FF Hex
0F Hex
81 Hex
20 Hex
GLK24064-25 - 0x15
GLC128128 - 0x12
VK204-25 - 0x0F
LK404-AT - 0x31
LK204-25 - 0x09
VFD2041 - 0x0C
LK162-12 - 0x34
LCD2021 - 0x03
LCD4021 - 0x06
24
19200 baud
1200 baud
2400 baud
9600 baud
Speed
GLK128128-25 - 0x21
LK204-25PC - 0x35
GLC12232 - 0x10
GLC24064 - 0x13
LK404-55 - 0x0A
VFD4021 - 0x0D
LCD1641 - 0x04
LCD4041 - 0x07
VFD1621 - 0x32