Usb (Universal Serial Bus) Interface - Epson TM-L500A RFID Technical Reference Manual

USB (Universal Serial Bus) Interface

Outline
• Full-speed transmission at 12 Mbps [bps: bits per second]
• Plug & Play, Hot Insertion & Removal
USB transmission specifications
USB function
Overall specifications
Transmission speed
Transmission method
Power supply specifications
Current consumed by USB bus
USB packet size (with full-speed connection)
USB bulk OUT (TM)
USB bulk IN (TM)
USB device class
USB descriptor
Vendor ID
Product ID
String Descriptor
Status transmission from printer with USB interface
In order to ensure that there is no lack of status data, it is necessary to periodically retrieve status
data at the host computer.
Unlike RS-232 transmission, status cannot spontaneously interrupt data transmission to the host
computer.
The printer has a 128-byte status data buffer. Statuses that exceed the buffer capacity are
canceled.
68
USB 2.0
USB Full-Speed (12 Mbps)
USB bulk transmission method
USB self power supply function
0 mA
64 bytes
64 bytes
Both vendor-defined class and USB printer class are
supported. Switching of the class can be set by DIP
switch on startup.
USB vendor-defined class
04b8h
0202h
Manufacturer EPSON
Product TM-L500A
Serial number Character string based on the product serial number
USB printer class
04b8h
0E08h