VK202-25-USB Matrix Orbital, VK202-25-USB Datasheet - Page 20

• Manufacturer Part Number: VK202-25-USB
• Description: Vacuum Fluorescent Displays (VFD) Vacuum Florescent Blue/Green Text
• Manufacturer: Matrix Orbital

Specifications of VK202-25-USB

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4.1.4 USB Communication
capable of communicating via a USB interface. The USB communications are identical to the serial commu-
nications. Communication is via a virtual com port, which is created in the operating system by the drivers
necessary to install the USB display. The VK202-25-USB communicating via USB is capable of baud rates
of 19,200 bps to 115,200 bps. Other baud rates are subject to the limitation of the virtual com port driver. For
further information regarding supported operating systems, and driver limitations please contact technical
support.
4.2 Changing the I
4.3 Changing the Baud Rate
Matrix Orbital
The VK202-25-USB is a USB device that offers identical communication protocol as the serial comport.
Syntax
Parameters
Description
Remembered
Default
Syntax
Parameters
This command sets the I
and 0xFF. The I
address is automatically set to one higher. For example if the I
address is set to 0x50, then the read address is 0x51.
NOTE The change in address is immediate.
Always
0x50
Hexadecimal
Decimal
ASCII
Parameter
adr
Hexadecimal
Decimal
ASCII
Parameter
speed
2
C Slave Address
2
C write address must be an even number and the read
VK202-25-USB
0xFE 0x33 [adr]
254 51 [adr]
254 “3” [adr]
0xFE 0x39 [speed]
254 57 [speed]
254 “9” [speed]
Length
Length
1
1
2
C write address of the module between 0x00
Description
The new I
0xFF).
Description
Hex value corresponding to a baud
rate.
2
C write address (0x00 -
2
C write
16